diff --git a/superadmin-service/.gitattributes b/superadmin-service/.gitattributes
new file mode 100644
index 00000000..8af972cd
--- /dev/null
+++ b/superadmin-service/.gitattributes
@@ -0,0 +1,3 @@
+/gradlew text eol=lf
+*.bat text eol=crlf
+*.jar binary
diff --git a/superadmin-service/.gitignore b/superadmin-service/.gitignore
new file mode 100644
index 00000000..c2065bc2
--- /dev/null
+++ b/superadmin-service/.gitignore
@@ -0,0 +1,37 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
diff --git a/superadmin-service/build.gradle b/superadmin-service/build.gradle
new file mode 100644
index 00000000..a7d441d0
--- /dev/null
+++ b/superadmin-service/build.gradle
@@ -0,0 +1,87 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '3.3.5'
+	id 'io.spring.dependency-management' version '1.1.6'
+	id("com.google.cloud.tools.jib") version "3.4.2"
+}
+
+group = 'club'
+version = '0.0.1-SNAPSHOT'
+
+java {
+	toolchain {
+		languageVersion = JavaLanguageVersion.of(17)
+	}
+}
+
+configurations {
+	compileOnly {
+		extendsFrom annotationProcessor
+	}
+}
+
+repositories {
+	mavenCentral()
+}
+
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+	implementation 'org.springframework.boot:spring-boot-starter-security'
+	implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.thymeleaf.extras:thymeleaf-extras-springsecurity6'
+	implementation 'nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect'
+	implementation("io.jsonwebtoken:jjwt-api:0.11.5")
+	implementation 'org.springframework.boot:spring-boot-starter-data-redis'
+	implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.0.2'
+	implementation 'org.springframework.boot:spring-boot-starter-validation'
+	implementation 'com.mysql:mysql-connector-j'
+	compileOnly 'org.projectlombok:lombok'
+	runtimeOnly 'com.h2database:h2'
+	runtimeOnly 'com.mysql:mysql-connector-j'
+	runtimeOnly("io.jsonwebtoken:jjwt-impl:0.11.5")
+	runtimeOnly("io.jsonwebtoken:jjwt-jackson:0.11.5")
+	annotationProcessor 'org.projectlombok:lombok'
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testImplementation 'org.springframework.security:spring-security-test'
+	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+}
+
+//tasks.named('test') {
+//	useJUnitPlatform()
+//}
+
+jib {
+	def activeProfile = System.getenv("SPRING_PROFILES_ACTIVE")
+	def imageName = System.getenv("IMAGE_NAME")
+	def imageTag = System.getenv("IMAGE_TAG")
+	def serverPort = System.getenv("SERVER_PORT") ?: "8080"
+
+	from {
+		image = "amazoncorretto:17-alpine3.17-jdk"
+	}
+	to {
+		image = imageName
+		tags = [imageTag, "latest"]
+	}
+
+	container {
+		jvmFlags = [
+				"-Dspring.profiles.active=${activeProfile}",
+				"-Dserver.port=${serverPort}",
+				"-Djava.security.egd=file:/dev/./urandom",
+				"-Dfile.encoding=UTF-8",
+				"-Duser.timezone=Asia/Seoul",
+				"-XX:+UnlockExperimentalVMOptions",
+				"-XX:+UseContainerSupport",
+				"-XX:+UseG1GC",  // 필요 시 UseSerialGC로 변경 가능
+				"-XX:InitialHeapSize=256m",  // 힙 사이즈를 더 낮게 설정
+				"-XX:MaxHeapSize=512m",      // 최대 힙 사이즈도 조정
+				"-XX:+DisableExplicitGC",
+				"-server"
+		]
+		ports = [serverPort]
+	}
+}
+
diff --git a/superadmin-service/gradle/wrapper/gradle-wrapper.jar b/superadmin-service/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..a4b76b95
Binary files /dev/null and b/superadmin-service/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/superadmin-service/gradle/wrapper/gradle-wrapper.properties b/superadmin-service/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..df97d72b
--- /dev/null
+++ b/superadmin-service/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10.2-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/superadmin-service/gradlew b/superadmin-service/gradlew
new file mode 100644
index 00000000..f5feea6d
--- /dev/null
+++ b/superadmin-service/gradlew
@@ -0,0 +1,252 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s
+' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/superadmin-service/gradlew.bat b/superadmin-service/gradlew.bat
new file mode 100644
index 00000000..9d21a218
--- /dev/null
+++ b/superadmin-service/gradlew.bat
@@ -0,0 +1,94 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/superadmin-service/settings.gradle b/superadmin-service/settings.gradle
new file mode 100644
index 00000000..7358d7a2
--- /dev/null
+++ b/superadmin-service/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'gach_dong'
diff --git a/superadmin-service/src/main/java/club/gach_dong/SuperadminApplication.java b/superadmin-service/src/main/java/club/gach_dong/SuperadminApplication.java
new file mode 100644
index 00000000..66e0f458
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/SuperadminApplication.java
@@ -0,0 +1,13 @@
+package club.gach_dong;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SuperadminApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(SuperadminApplication.class, args);
+	}
+
+}
diff --git a/superadmin-service/src/main/java/club/gach_dong/api/PublicSuperAdminApiSpecification.java b/superadmin-service/src/main/java/club/gach_dong/api/PublicSuperAdminApiSpecification.java
new file mode 100644
index 00000000..06a77f23
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/api/PublicSuperAdminApiSpecification.java
@@ -0,0 +1,33 @@
+package club.gach_dong.api;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import club.gach_dong.dto.request.LoginRequest;
+import club.gach_dong.dto.response.AnnouncementResponse;
+import club.gach_dong.dto.response.AuthResponse;
+
+import java.util.List;
+
+@Tag(name = "Public 슈퍼어드민 API", description = "Public한 슈퍼어드민 관련 API")
+@RestController
+@RequestMapping("/public/api/v1")
+public interface PublicSuperAdminApiSpecification {
+
+    @Operation(summary = "로그인", description = "서비스 관리자가 로그인합니다.")
+    @PostMapping("/login")
+    ResponseEntity<AuthResponse> login(
+            @Parameter(description = "로그인 정보") @Valid @RequestBody LoginRequest loginRequest);
+
+    @Operation(summary = "모든 공지사항 조회", description = "모든 공지사항을 조회합니다.")
+    @GetMapping("/announcements")
+    ResponseEntity<List<AnnouncementResponse>> getAllAnnouncements();
+
+    @Operation(summary = "특정 공지사항 조회", description = "ID로 특정 공지사항을 조회합니다.")
+    @GetMapping("/announcements/{id}")
+    ResponseEntity<AnnouncementResponse> getAnnouncementById(
+            @Parameter(description = "공지사항 ID") @PathVariable Long id);
+}
diff --git a/superadmin-service/src/main/java/club/gach_dong/api/SuperAdminApiSpecification.java b/superadmin-service/src/main/java/club/gach_dong/api/SuperAdminApiSpecification.java
new file mode 100644
index 00000000..d16d189a
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/api/SuperAdminApiSpecification.java
@@ -0,0 +1,54 @@
+package club.gach_dong.api;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.security.SecurityRequirement;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import club.gach_dong.dto.request.CreateAnnouncementRequest;
+import club.gach_dong.dto.request.UpdateAnnouncementRequest;
+import club.gach_dong.dto.response.AnnouncementResponse;
+import club.gach_dong.dto.response.TokenResponse;
+
+@Tag(name = "슈퍼어드민 API", description = "슈퍼어드민 관련 API")
+@RestController
+@RequestMapping("/api/v1")
+public interface SuperAdminApiSpecification {
+
+    @Operation(summary = "로그아웃", description = "서비스 관리자가 로그아웃합니다.",
+            security = @SecurityRequirement(name = "Authorization"))
+    @PostMapping("/logout")
+    ResponseEntity<String> logout(
+            @Parameter(description = "JWT 토큰") @RequestHeader("Authorization") String token,
+            @Parameter(description = "Refresh Token") @RequestHeader("Refresh-Token") String refreshToken);
+
+    @Operation(summary = "공지사항 생성", description = "서비스 관리자가 새로운 공지사항을 생성합니다.",
+            security = @SecurityRequirement(name = "Authorization"))
+    @PostMapping("/create-announcements")
+    ResponseEntity<AnnouncementResponse> createAnnouncement(
+            @Parameter(description = "JWT 토큰") @RequestHeader("Authorization") String token,
+            @Valid @RequestBody CreateAnnouncementRequest request);
+
+    @Operation(summary = "공지사항 수정", description = "서비스 관리자가 기존 공지사항을 수정합니다.",
+            security = @SecurityRequirement(name = "Authorization"))
+    @PutMapping("/update-announcements/{id}")
+    ResponseEntity<AnnouncementResponse> updateAnnouncement(
+            @Parameter(description = "JWT 토큰") @RequestHeader("Authorization") String token,
+            @Parameter(description = "공지사항 ID") @PathVariable Long id,
+            @Valid @RequestBody UpdateAnnouncementRequest request);
+
+    @Operation(summary = "공지사항 삭제", description = "서비스 관리자가 공지사항을 삭제합니다.",
+            security = @SecurityRequirement(name = "Authorization"))
+    @DeleteMapping("/delete-announcements/{id}")
+    ResponseEntity<String> deleteAnnouncement(
+            @Parameter(description = "JWT 토큰") @RequestHeader("Authorization") String token,
+            @Parameter(description = "공지사항 ID") @PathVariable Long id);
+
+    @Operation(summary = "Refresh Token 재발급", description = "유효한 Refresh Token을 사용하여 새로운 Refresh Token과 Access Token을 발급받습니다.",
+            security = @SecurityRequirement(name = "Authorization"))
+    @PostMapping("/refresh-token")
+    ResponseEntity<TokenResponse> refreshToken(
+            @Parameter(description = "Refresh Token") @RequestHeader("Authorization") String refreshToken);
+}
diff --git a/superadmin-service/src/main/java/club/gach_dong/config/SwaggerConfig.java b/superadmin-service/src/main/java/club/gach_dong/config/SwaggerConfig.java
new file mode 100644
index 00000000..60fd41d9
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/config/SwaggerConfig.java
@@ -0,0 +1,49 @@
+package club.gach_dong.config;
+
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.info.Info;
+import io.swagger.v3.oas.models.media.Content;
+import io.swagger.v3.oas.models.media.MediaType;
+import io.swagger.v3.oas.models.responses.ApiResponse;
+import io.swagger.v3.oas.models.security.SecurityScheme;
+import io.swagger.v3.oas.models.servers.Server;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class SwaggerConfig {
+
+    @Value("${app.gateway.endpoint}") String gatewayEndpoint;
+    @Bean
+    public OpenAPI openAPI() {
+        return new OpenAPI()
+                .components(component())
+                .info(apiInfo())
+                .addServersItem(serverItem());
+    }
+
+    private Info apiInfo() {
+        return new Info()
+                .title("가츠동 API 명세 - 슈퍼어드민 서비스")
+                .description("슈퍼어드민 서비스에 대한 API 명세입니다.")
+                .version("v1");
+    }
+
+    private Server serverItem() {
+        return new Server()
+                .url(gatewayEndpoint + "/superadmin/")
+                .description("슈퍼어드민"
+                        + " 서비스 URL");
+    }
+
+    private Components component() {
+        return new Components()
+                .addSecuritySchemes("Authorization",
+                        new SecurityScheme()
+                                .type(SecurityScheme.Type.HTTP)
+                                .scheme("Bearer")
+                                .bearerFormat("JWT"));
+    }
+}
\ No newline at end of file
diff --git a/superadmin-service/src/main/java/club/gach_dong/controller/PublicSuperAdminController.java b/superadmin-service/src/main/java/club/gach_dong/controller/PublicSuperAdminController.java
new file mode 100644
index 00000000..e09b30ad
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/controller/PublicSuperAdminController.java
@@ -0,0 +1,60 @@
+package club.gach_dong.controller;
+
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import club.gach_dong.api.PublicSuperAdminApiSpecification;
+import club.gach_dong.dto.request.LoginRequest;
+import club.gach_dong.dto.response.AuthResponse;
+import club.gach_dong.entity.SuperAdmin;
+import club.gach_dong.service.SuperAdminService;
+import club.gach_dong.dto.response.AnnouncementResponse;
+import club.gach_dong.entity.Announcement;
+import club.gach_dong.util.JwtUtil;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+@RestController
+@RequiredArgsConstructor
+public class PublicSuperAdminController implements PublicSuperAdminApiSpecification {
+
+    private final SuperAdminService superAdminService;
+    private final JwtUtil jwtUtil;
+
+    @Override
+    public ResponseEntity<AuthResponse> login(@Valid @RequestBody LoginRequest loginRequest) {
+        SuperAdmin superAdmin = superAdminService.findByEmail(loginRequest.email());
+
+        if (superAdmin == null || !superAdminService.checkPassword(superAdmin, loginRequest.password())) {
+            return ResponseEntity.status(HttpStatus.UNAUTHORIZED)
+                    .body(AuthResponse.withMessage("이메일 또는 비밀번호가 올바르지 않습니다."));
+        }
+
+        String accessToken = jwtUtil.generateSuperAdminToken(superAdmin);
+        String refreshToken = jwtUtil.generateSuperAdminRefreshToken(superAdmin);
+
+        return ResponseEntity.ok(AuthResponse.of(accessToken, refreshToken));
+    }
+
+    @Override
+    public ResponseEntity<List<AnnouncementResponse>> getAllAnnouncements() {
+        List<AnnouncementResponse> announcements = superAdminService.getAllAnnouncements()
+                .stream()
+                .map(AnnouncementResponse::from)
+                .collect(Collectors.toList());
+        return ResponseEntity.ok(announcements);
+    }
+
+    @Override
+    public ResponseEntity<AnnouncementResponse> getAnnouncementById(@PathVariable Long id) {
+        try {
+            Announcement announcement = superAdminService.getAnnouncementById(id);
+            return ResponseEntity.ok(AnnouncementResponse.from(announcement));
+        } catch (RuntimeException ex) {
+            return ResponseEntity.status(HttpStatus.NOT_FOUND).body(null);
+        }
+    }
+}
diff --git a/superadmin-service/src/main/java/club/gach_dong/controller/SuperAdminController.java b/superadmin-service/src/main/java/club/gach_dong/controller/SuperAdminController.java
new file mode 100644
index 00000000..f262522b
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/controller/SuperAdminController.java
@@ -0,0 +1,106 @@
+package club.gach_dong.controller;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import club.gach_dong.api.SuperAdminApiSpecification;
+import club.gach_dong.dto.response.TokenResponse;
+import club.gach_dong.entity.SuperAdmin;
+import club.gach_dong.service.SuperAdminService;
+import club.gach_dong.dto.request.CreateAnnouncementRequest;
+import club.gach_dong.dto.request.UpdateAnnouncementRequest;
+import club.gach_dong.dto.response.AnnouncementResponse;
+import club.gach_dong.entity.Announcement;
+import club.gach_dong.util.JwtUtil;
+
+@RestController
+@RequiredArgsConstructor
+public class SuperAdminController implements SuperAdminApiSpecification {
+
+    private final SuperAdminService superAdminService;
+    private final JwtUtil jwtUtil;
+
+    @Override
+    public ResponseEntity<String> logout(@RequestHeader("Authorization") String token, @RequestHeader("Refresh-Token") String refreshToken) {
+        try {
+            String jwtToken = token.startsWith("Bearer ") ? token.substring(7) : token;
+
+            superAdminService.blacklistSuperAdminToken(jwtToken);
+            superAdminService.blacklistSuperAdminRefreshToken(refreshToken);
+
+            return ResponseEntity.ok("로그아웃 되었습니다.");
+        } catch (Exception e) {
+            return ResponseEntity.status(HttpStatus.BAD_REQUEST).body("로그아웃 실패: " + e.getMessage());
+        }
+    }
+
+    @Override
+    public ResponseEntity<AnnouncementResponse> createAnnouncement(
+            @RequestHeader("Authorization") String token,
+            @RequestBody CreateAnnouncementRequest request) {
+        if (!superAdminService.validateToken(token)) {
+            return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body(null);
+        }
+        try {
+            Announcement announcement = superAdminService.createAnnouncement(request.title(), request.content());
+            return ResponseEntity.status(HttpStatus.CREATED).body(AnnouncementResponse.from(announcement));
+        } catch (Exception ex) {
+            return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(null);
+        }
+    }
+
+    @Override
+    public ResponseEntity<AnnouncementResponse> updateAnnouncement(
+            @RequestHeader("Authorization") String token,
+            @PathVariable Long id,
+            @RequestBody UpdateAnnouncementRequest request) {
+        if (!superAdminService.validateToken(token)) {
+            return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body(null);
+        }
+        try {
+            Announcement announcement = superAdminService.updateAnnouncement(id, request.title(), request.content());
+            return ResponseEntity.ok(AnnouncementResponse.from(announcement));
+        } catch (RuntimeException ex) {
+            return ResponseEntity.status(HttpStatus.NOT_FOUND).body(null);
+        }
+    }
+
+    @Override
+    public ResponseEntity<String> deleteAnnouncement(@RequestHeader("Authorization") String token,
+                                                     @PathVariable Long id) {
+        if (!superAdminService.validateToken(token)) {
+            return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body("유효하지 않은 토큰입니다.");
+        }
+        try {
+            superAdminService.deleteAnnouncement(id);
+            return ResponseEntity.ok("공지사항이 성공적으로 삭제되었습니다.");
+        } catch (RuntimeException ex) {
+            return ResponseEntity.status(HttpStatus.NOT_FOUND).body("공지사항 삭제 실패: " + ex.getMessage());
+        }
+    }
+
+    @Override
+    public ResponseEntity<TokenResponse> refreshToken(@RequestHeader("Authorization") String refreshToken) {
+        if (!jwtUtil.validateSuperAdminRefreshToken(refreshToken)) {
+            return ResponseEntity.status(HttpStatus.UNAUTHORIZED)
+                    .body(TokenResponse.withMessage("유효하지 않은 Refresh Token입니다."));
+        }
+
+        try {
+            String email = jwtUtil.getSuperAdminEmailFromToken(refreshToken);
+            SuperAdmin superAdmin = superAdminService.findByEmail(email);
+
+            String newAccessToken = jwtUtil.generateSuperAdminToken(superAdmin);
+
+            String newRefreshToken = jwtUtil.generateSuperAdminRefreshToken(superAdmin);
+
+            jwtUtil.blacklistSuperAdminRefreshToken(refreshToken);
+
+            return ResponseEntity.ok(TokenResponse.of(newAccessToken, newRefreshToken));
+        } catch (Exception e) {
+            return ResponseEntity.status(HttpStatus.BAD_REQUEST)
+                    .body(TokenResponse.withMessage("Access Token 재발급 실패: " + e.getMessage()));
+        }
+    }
+}
diff --git a/superadmin-service/src/main/java/club/gach_dong/dto/request/CreateAnnouncementRequest.java b/superadmin-service/src/main/java/club/gach_dong/dto/request/CreateAnnouncementRequest.java
new file mode 100644
index 00000000..94ad1ddf
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/dto/request/CreateAnnouncementRequest.java
@@ -0,0 +1,11 @@
+package club.gach_dong.dto.request;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+public record CreateAnnouncementRequest(
+        @Schema(description = "공지사항 제목", example = "공지사항 제목")
+        String title,
+
+        @Schema(description = "공지사항 내용", example = "공지사항 내용")
+        String content
+) {}
diff --git a/superadmin-service/src/main/java/club/gach_dong/dto/request/LoginRequest.java b/superadmin-service/src/main/java/club/gach_dong/dto/request/LoginRequest.java
new file mode 100644
index 00000000..5c2f4393
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/dto/request/LoginRequest.java
@@ -0,0 +1,11 @@
+package club.gach_dong.dto.request;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+public record LoginRequest(
+        @Schema(description = "서비스 관리자 이메일", example = "superadmin1234")
+        String email,
+
+        @Schema(description = "서비스 관리자 비밀번호", example = "superadmin1234")
+        String password
+) {}
diff --git a/superadmin-service/src/main/java/club/gach_dong/dto/request/UpdateAnnouncementRequest.java b/superadmin-service/src/main/java/club/gach_dong/dto/request/UpdateAnnouncementRequest.java
new file mode 100644
index 00000000..a8008e9d
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/dto/request/UpdateAnnouncementRequest.java
@@ -0,0 +1,11 @@
+package club.gach_dong.dto.request;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+public record UpdateAnnouncementRequest(
+        @Schema(description = "수정할 공지사항 제목", example = "수정된 공지사항 제목")
+        String title,
+
+        @Schema(description = "수정할 공지사항 내용", example = "수정된 공지사항 내용")
+        String content
+) {}
diff --git a/superadmin-service/src/main/java/club/gach_dong/dto/response/AnnouncementResponse.java b/superadmin-service/src/main/java/club/gach_dong/dto/response/AnnouncementResponse.java
new file mode 100644
index 00000000..e069665e
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/dto/response/AnnouncementResponse.java
@@ -0,0 +1,34 @@
+package club.gach_dong.dto.response;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import jakarta.validation.constraints.NotNull;
+import club.gach_dong.entity.Announcement;
+
+import java.util.Date;
+
+public record AnnouncementResponse(
+        @NotNull
+        @Schema(description = "공지사항 ID", example = "1")
+        Long id,
+
+        @NotNull
+        @Schema(description = "공지사항 제목", example = "공지사항 제목")
+        String title,
+
+        @NotNull
+        @Schema(description = "공지사항 내용", example = "공지사항 내용입니다.")
+        String content,
+
+        @NotNull
+        @Schema(description = "작성일자", example = "2024-01-01T12:00:00Z")
+        Date createdDate
+) {
+    public static AnnouncementResponse from(Announcement announcement) {
+        return new AnnouncementResponse(
+                announcement.getId(),
+                announcement.getTitle(),
+                announcement.getContent(),
+                announcement.getCreatedDate()
+        );
+    }
+}
\ No newline at end of file
diff --git a/superadmin-service/src/main/java/club/gach_dong/dto/response/AuthResponse.java b/superadmin-service/src/main/java/club/gach_dong/dto/response/AuthResponse.java
new file mode 100644
index 00000000..afcaa145
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/dto/response/AuthResponse.java
@@ -0,0 +1,22 @@
+package club.gach_dong.dto.response;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+public record AuthResponse(
+        @Schema(description = "JWT 토큰", example = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...")
+        String accessToken,
+
+        @Schema(description = "Refresh 토큰", example = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...")
+        String refreshToken,
+
+        @Schema(description = "응답 메시지", example = "로그인 성공")
+        String message
+) {
+    public static AuthResponse of(String accessToken, String refreshToken) {
+        return new AuthResponse(accessToken, refreshToken, "로그인 성공");
+    }
+
+    public static AuthResponse withMessage(String message) {
+        return new AuthResponse(null, null, message);
+    }
+}
diff --git a/superadmin-service/src/main/java/club/gach_dong/dto/response/TokenResponse.java b/superadmin-service/src/main/java/club/gach_dong/dto/response/TokenResponse.java
new file mode 100644
index 00000000..22f06e63
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/dto/response/TokenResponse.java
@@ -0,0 +1,22 @@
+package club.gach_dong.dto.response;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+public record TokenResponse(
+        @Schema(description = "JWT Access Token", example = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...")
+        String accessToken,
+
+        @Schema(description = "JWT Refresh Token", example = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...")
+        String refreshToken,
+
+        @Schema(description = "응답 메시지", example = "Access Token, Refresh Token 재발급 성공")
+        String message
+) {
+    public static TokenResponse of(String accessToken, String refreshToken) {
+        return new TokenResponse(accessToken, refreshToken, "Access Token, Refresh Token 재발급 성공");
+    }
+
+    public static TokenResponse withMessage(String message) {
+        return new TokenResponse(null, null, message);
+    }
+}
diff --git a/superadmin-service/src/main/java/club/gach_dong/entity/Announcement.java b/superadmin-service/src/main/java/club/gach_dong/entity/Announcement.java
new file mode 100644
index 00000000..96674ca0
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/entity/Announcement.java
@@ -0,0 +1,36 @@
+package club.gach_dong.entity;
+
+import jakarta.persistence.*;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.Date;
+
+@Entity
+@Data
+@NoArgsConstructor
+@Table(name = "announcements")
+public class Announcement {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(length = 255, nullable = false)
+    private String title;
+
+    @Column(length = 500, nullable = false)
+    private String content;
+
+    @Temporal(TemporalType.TIMESTAMP)
+    private Date createdDate;
+
+    private Announcement(String title, String content) {
+        this.title = title;
+        this.content = content;
+        this.createdDate = new Date();
+    }
+
+    public static Announcement of(String title, String content) {
+        return new Announcement(title, content);
+    }
+}
diff --git a/superadmin-service/src/main/java/club/gach_dong/entity/SuperAdmin.java b/superadmin-service/src/main/java/club/gach_dong/entity/SuperAdmin.java
new file mode 100644
index 00000000..482703b8
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/entity/SuperAdmin.java
@@ -0,0 +1,40 @@
+package club.gach_dong.entity;
+
+import jakarta.persistence.*;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.UUID;
+
+@Entity
+@Data
+@NoArgsConstructor
+@Table(name = "superadmin")
+public class SuperAdmin {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(length = 255, nullable = false, unique = true)
+    private String userReferenceId;
+
+    @Column(length = 255, nullable = false, unique = true)
+    private String email;
+
+    @Column(length = 255, nullable = false)
+    private String password;
+
+    @Column(length = 100, nullable = false)
+    private String name;
+
+    public SuperAdmin(String userReferenceId, String email, String password, String name) {
+        this.userReferenceId = userReferenceId;
+        this.email = email;
+        this.password = password;
+        this.name = name;
+    }
+
+    public static SuperAdmin of(String email, String password, String name) {
+        return new SuperAdmin(UUID.randomUUID().toString(), email, password, name);
+    }
+}
\ No newline at end of file
diff --git a/superadmin-service/src/main/java/club/gach_dong/repository/AnnouncementRepository.java b/superadmin-service/src/main/java/club/gach_dong/repository/AnnouncementRepository.java
new file mode 100644
index 00000000..cda5127b
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/repository/AnnouncementRepository.java
@@ -0,0 +1,7 @@
+package club.gach_dong.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import club.gach_dong.entity.Announcement;
+
+public interface AnnouncementRepository extends JpaRepository<Announcement, Long> {
+}
diff --git a/superadmin-service/src/main/java/club/gach_dong/repository/SuperAdminRepository.java b/superadmin-service/src/main/java/club/gach_dong/repository/SuperAdminRepository.java
new file mode 100644
index 00000000..3817eefc
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/repository/SuperAdminRepository.java
@@ -0,0 +1,11 @@
+package club.gach_dong.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import club.gach_dong.entity.SuperAdmin;
+
+import java.util.Optional;
+
+public interface SuperAdminRepository extends JpaRepository<SuperAdmin, Long> {
+    Optional<SuperAdmin> findByEmail(String email);
+    Optional<SuperAdmin> findByUserReferenceId(String userReferenceId);
+}
diff --git a/superadmin-service/src/main/java/club/gach_dong/security/SecurityConfig.java b/superadmin-service/src/main/java/club/gach_dong/security/SecurityConfig.java
new file mode 100644
index 00000000..c8a91b85
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/security/SecurityConfig.java
@@ -0,0 +1,40 @@
+package club.gach_dong.security;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.http.SessionCreationPolicy;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.security.web.SecurityFilterChain;
+import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
+import org.springframework.security.config.annotation.web.configurers.HeadersConfigurer;
+
+@Configuration
+@EnableWebSecurity
+public class SecurityConfig {
+
+    @Bean
+    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
+        return http
+                .csrf(AbstractHttpConfigurer::disable)
+                .sessionManagement(sessionManagement ->
+                        sessionManagement.sessionCreationPolicy(SessionCreationPolicy.STATELESS)
+                )
+                .authorizeHttpRequests(requestsManagement -> requestsManagement
+                        .anyRequest().permitAll())
+                .headers(headers -> headers.frameOptions(HeadersConfigurer.FrameOptionsConfig::sameOrigin))
+                .build();
+    }
+
+    @Bean
+    public JwtRequestFilter jwtRequestFilter() {
+        return new JwtRequestFilter();
+    }
+
+    @Bean
+    public PasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder();
+    }
+}
diff --git a/superadmin-service/src/main/java/club/gach_dong/service/SuperAdminService.java b/superadmin-service/src/main/java/club/gach_dong/service/SuperAdminService.java
new file mode 100644
index 00000000..e470a8c8
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/service/SuperAdminService.java
@@ -0,0 +1,85 @@
+package club.gach_dong.service;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import club.gach_dong.entity.Announcement;
+import club.gach_dong.entity.SuperAdmin;
+import club.gach_dong.repository.AnnouncementRepository;
+import club.gach_dong.repository.SuperAdminRepository;
+import club.gach_dong.util.JwtUtil;
+
+import java.util.List;
+
+@Service
+public class SuperAdminService {
+
+    @Autowired
+    private SuperAdminRepository superAdminRepository;
+
+    @Autowired
+    private JwtUtil jwtUtil;
+
+    @Autowired
+    private AnnouncementRepository announcementRepository;
+
+    public String login(String email, String password) {
+        SuperAdmin superAdmin = superAdminRepository.findByEmail(email)
+                .orElseThrow(() -> new RuntimeException("사용자를 찾을 수 없습니다."));
+
+        if (password.equals(superAdmin.getPassword())) {
+            return jwtUtil.generateSuperAdminToken(superAdmin);
+        }
+        throw new RuntimeException("유효하지 않은 비밀번호입니다.");
+    }
+
+    public boolean checkPassword(SuperAdmin superAdmin, String password) {
+        return password.equals(superAdmin.getPassword());
+    }
+
+    public boolean validateToken(String token) {
+        return jwtUtil.validateSuperAdminToken(token);
+    }
+
+    public void blacklistSuperAdminToken(String token) {
+        jwtUtil.blacklistSuperAdminToken(token);
+    }
+
+    public void blacklistSuperAdminRefreshToken(String refreshToken) {
+        jwtUtil.blacklistSuperAdminRefreshToken(refreshToken);
+    }
+
+    public Announcement createAnnouncement(String title, String content) {
+        Announcement announcement = Announcement.of(title, content);
+        return announcementRepository.save(announcement);
+    }
+
+    public List<Announcement> getAllAnnouncements() {
+        return announcementRepository.findAll();
+    }
+
+    public Announcement getAnnouncementById(Long id) {
+        return announcementRepository.findById(id)
+                .orElseThrow(() -> new RuntimeException("공지사항이 존재하지 않습니다."));
+    }
+
+    public Announcement updateAnnouncement(Long id, String title, String content) {
+        Announcement announcement = announcementRepository.findById(id)
+                .orElseThrow(() -> new RuntimeException("공지사항이 존재하지 않습니다."));
+        announcement.setTitle(title);
+        announcement.setContent(content);
+        return announcementRepository.save(announcement);
+    }
+
+    public void deleteAnnouncement(Long id) {
+        announcementRepository.deleteById(id);
+    }
+
+    public SuperAdmin findByEmail(String email) {
+        return superAdminRepository.findByEmail(email).orElse(null);
+    }
+
+    public SuperAdmin findByUserReferenceId(String userReferenceId) {
+        return superAdminRepository.findByUserReferenceId(userReferenceId)
+                .orElse(null);
+    }
+}
\ No newline at end of file
diff --git a/superadmin-service/src/main/java/club/gach_dong/util/JwtUtil.java b/superadmin-service/src/main/java/club/gach_dong/util/JwtUtil.java
new file mode 100644
index 00000000..1912ea49
--- /dev/null
+++ b/superadmin-service/src/main/java/club/gach_dong/util/JwtUtil.java
@@ -0,0 +1,144 @@
+package club.gach_dong.util;
+
+import io.jsonwebtoken.Claims;
+import io.jsonwebtoken.Jwts;
+import io.jsonwebtoken.SignatureAlgorithm;
+import io.jsonwebtoken.security.Keys;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.stereotype.Component;
+import club.gach_dong.entity.SuperAdmin;
+
+import java.nio.charset.StandardCharsets;
+import java.security.Key;
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
+import java.util.Date;
+import java.util.concurrent.TimeUnit;
+
+@Component
+public class JwtUtil {
+
+    private final Key superAdminJwtKey;
+    private final RedisTemplate<String, String> redisTemplate;
+
+    public JwtUtil(
+            @Value("${jwt.superadmin.secret}") String superAdminJwtSecret,
+            RedisTemplate<String, String> redisTemplate) {
+        this.superAdminJwtKey = Keys.hmacShaKeyFor(superAdminJwtSecret.getBytes(StandardCharsets.UTF_8));
+        this.redisTemplate = redisTemplate;
+    }
+
+    public String generateSuperAdminToken(SuperAdmin superAdmin) {
+        Date expirationDate = Date.from(Instant.now().plus(1, ChronoUnit.DAYS));
+        return Jwts.builder()
+                .setSubject(superAdmin.getEmail())
+                .claim("user_reference_id", superAdmin.getUserReferenceId())
+                .setExpiration(expirationDate)
+                .signWith(superAdminJwtKey, SignatureAlgorithm.HS512)
+                .compact();
+    }
+
+    public String generateSuperAdminRefreshToken(SuperAdmin superAdmin) {
+        Date expirationDate = Date.from(Instant.now().plus(7, ChronoUnit.DAYS));
+        String refreshToken = Jwts.builder()
+                .setSubject(superAdmin.getEmail())
+                .claim("user_reference_id", superAdmin.getUserReferenceId())
+                .setExpiration(expirationDate)
+                .signWith(superAdminJwtKey, SignatureAlgorithm.HS512)
+                .compact();
+
+        redisTemplate.opsForValue().set(refreshToken, superAdmin.getEmail(), 7, TimeUnit.DAYS);
+        return refreshToken;
+    }
+
+    public String getSuperAdminEmailFromToken(String token) {
+        try {
+            return Jwts.parser()
+                    .setSigningKey(superAdminJwtKey)
+                    .parseClaimsJws(token.replace("Bearer ", ""))
+                    .getBody()
+                    .getSubject();
+        } catch (Exception e) {
+            throw new RuntimeException("유효하지 않은 토큰입니다.");
+        }
+    }
+
+    public String getSuperAdminReferenceIdFromToken(String token) {
+        try {
+            Claims claims = Jwts.parser()
+                    .setSigningKey(superAdminJwtKey)
+                    .parseClaimsJws(token.replace("Bearer ", ""))
+                    .getBody();
+            return claims.get("user_reference_id", String.class);
+        } catch (Exception e) {
+            throw new RuntimeException("유효하지 않은 관리자 토큰입니다.");
+        }
+    }
+
+    public boolean validateSuperAdminToken(String token) {
+        if (isTokenBlacklisted(token.replace("Bearer ", ""))) {
+            return false;
+        }
+
+        try {
+            Jwts.parser().setSigningKey(superAdminJwtKey).parseClaimsJws(token.replace("Bearer ", ""));
+            return true;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+
+    public boolean validateSuperAdminRefreshToken(String adminRefreshToken) {
+        String token = adminRefreshToken.replace("Bearer ", "");
+
+        if (isTokenBlacklisted(token)) {
+            return false;
+        }
+
+        try {
+            Jwts.parser().setSigningKey(superAdminJwtKey).parseClaimsJws(token);
+            return true;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+
+    public void blacklistSuperAdminToken(String token) {
+        Claims claims = Jwts.parser()
+                .setSigningKey(superAdminJwtKey)
+                .parseClaimsJws(token.replace("Bearer ", ""))
+                .getBody();
+
+        Date expirationDate = claims.getExpiration();
+        Date currentDate = new Date();
+
+        long remainingValidity = expirationDate.getTime() - currentDate.getTime();
+
+        if (remainingValidity > 0) {
+            redisTemplate.opsForValue().set("blacklist:" + token, "blacklisted", remainingValidity, TimeUnit.MILLISECONDS);
+        }
+    }
+
+    public void blacklistSuperAdminRefreshToken(String adminRefreshToken) {
+        String token = adminRefreshToken.replace("Bearer ", "");
+
+        Claims claims = Jwts.parser()
+                .setSigningKey(superAdminJwtKey)
+                .parseClaimsJws(token)
+                .getBody();
+
+        Date expirationDate = claims.getExpiration();
+        Date currentDate = new Date();
+
+        long remainingValidity = expirationDate.getTime() - currentDate.getTime();
+
+        if (remainingValidity > 0) {
+            redisTemplate.opsForValue().set("blacklist:" + token, "blacklisted", remainingValidity, TimeUnit.MILLISECONDS);
+        }
+    }
+
+    public boolean isTokenBlacklisted(String token) {
+        return redisTemplate.hasKey("blacklist:" + token);
+    }
+}
\ No newline at end of file
diff --git a/superadmin-service/src/main/resources/application-dev.yaml b/superadmin-service/src/main/resources/application-dev.yaml
new file mode 100644
index 00000000..7ad9af79
--- /dev/null
+++ b/superadmin-service/src/main/resources/application-dev.yaml
@@ -0,0 +1,3 @@
+app:
+  gateway:
+    endpoint: http://gateway-dev.gachdong.club
\ No newline at end of file
diff --git a/superadmin-service/src/main/resources/application.yaml b/superadmin-service/src/main/resources/application.yaml
new file mode 100644
index 00000000..94b0af57
--- /dev/null
+++ b/superadmin-service/src/main/resources/application.yaml
@@ -0,0 +1,29 @@
+spring:
+  datasource:
+    url: ${DB_URL}
+    username: ${DB_USERNAME}
+    password: ${DB_PASSWORD}
+    driver-class-name: com.mysql.cj.jdbc.Driver
+
+  jpa:
+    hibernate:
+      ddl-auto: update
+    properties:
+      hibernate:
+        show_sql: true
+        format_sql: true
+
+  thymeleaf:
+    cache: false
+
+  redis:
+    host: ${REDIS_HOST}
+    port: 6379
+
+jwt:
+  superadmin:
+    secret: ${JWT_SUPERADMIN_SECRET}
+
+logging:
+  level:
+    org.hibernate.SQL: debug
\ No newline at end of file
diff --git a/superadmin-service/src/test/java/club/gach_dong/GachDongApplicationTests.java b/superadmin-service/src/test/java/club/gach_dong/GachDongApplicationTests.java
new file mode 100644
index 00000000..0f522098
--- /dev/null
+++ b/superadmin-service/src/test/java/club/gach_dong/GachDongApplicationTests.java
@@ -0,0 +1,13 @@
+package club.gach_dong;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class GachDongApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}