diff --git a/call-profile/main_test.go b/call-profile/main_test.go
index edc2fe3..acc50f2 100644
--- a/call-profile/main_test.go
+++ b/call-profile/main_test.go
@@ -319,6 +319,7 @@ func TestHandlerIntegration(t *testing.T) {
 				"githubId":      "johndoe",
 				"linkedin":      "johndoe",
 				"website":       "https://johndoe.com",
+				"dob":           "1990-01-15",
 			},
 			mockServer: func() *httptest.Server {
 				return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@@ -337,7 +338,8 @@ func TestHandlerIntegration(t *testing.T) {
 							"designation": "Developer",
 							"github_id": "johndoe",
 							"linkedin_id": "johndoe",
-							"website": "https://johndoe.com"
+							"website": "https://johndoe.com",
+							"dob": "1990-01-15"
 						}`))
 					}
 				}))
@@ -522,6 +524,7 @@ func TestHandlerWithRealFirestore(t *testing.T) {
 		"githubId":      "integrationtest",
 		"linkedin":      "integrationtest",
 		"website":       "https://integrationtest.com",
+		"dob":           "1992-05-20",
 	}
 
 	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@@ -540,7 +543,8 @@ func TestHandlerWithRealFirestore(t *testing.T) {
 				"designation": "Tester",
 				"github_id": "integrationtest",
 				"linkedin_id": "integrationtest",
-				"website": "https://integrationtest.com"
+				"website": "https://integrationtest.com",
+				"dob": "1992-05-20"
 			}`))
 		}
 	}))
diff --git a/call-profile/testdata.go b/call-profile/testdata.go
index eea13eb..f11d6ef 100644
--- a/call-profile/testdata.go
+++ b/call-profile/testdata.go
@@ -163,6 +163,7 @@ var ResValidationTests = []struct {
 			TwitterId:   "johndoe",
 			InstagramId: "johndoe",
 			Website:     "https://johndoe.com",
+			DOB:         "1990-01-15",
 		},
 		IsValid:     true,
 		Description: "Complete valid Res struct",
@@ -241,6 +242,78 @@ var ResValidationTests = []struct {
 		IsValid:     false,
 		Description: "Invalid website URL should fail validation",
 	},
+	{
+		Name: "InvalidDOBFormat_Slash",
+		Res: utils.Res{
+			FirstName:   "John",
+			LastName:    "Doe",
+			Email:       "john.doe@example.com",
+			Phone:       "1234567890",
+			YOE:         5,
+			Company:     "Tech Corp",
+			Designation: "Developer",
+			GithubId:    "johndoe",
+			LinkedIn:    "johndoe",
+			Website:     "https://johndoe.com",
+			DOB:         "01/15/1990",
+		},
+		IsValid:     false,
+		Description: "DOB with slash separator should fail validation",
+	},
+	{
+		Name: "InvalidDOBFormat_WrongFormat",
+		Res: utils.Res{
+			FirstName:   "John",
+			LastName:    "Doe",
+			Email:       "john.doe@example.com",
+			Phone:       "1234567890",
+			YOE:         5,
+			Company:     "Tech Corp",
+			Designation: "Developer",
+			GithubId:    "johndoe",
+			LinkedIn:    "johndoe",
+			Website:     "https://johndoe.com",
+			DOB:         "invalid-date",
+		},
+		IsValid:     false,
+		Description: "Invalid date string should fail validation",
+	},
+	{
+		Name: "ValidDOB_EmptyString",
+		Res: utils.Res{
+			FirstName:   "John",
+			LastName:    "Doe",
+			Email:       "john.doe@example.com",
+			Phone:       "1234567890",
+			YOE:         5,
+			Company:     "Tech Corp",
+			Designation: "Developer",
+			GithubId:    "johndoe",
+			LinkedIn:    "johndoe",
+			Website:     "https://johndoe.com",
+			DOB:         "",
+		},
+		IsValid:     true,
+		Description: "Empty DOB string should be valid (optional field)",
+	},
+	{
+		Name: "ValidDOB_ValidFormat",
+		Res: utils.Res{
+			FirstName:   "John",
+			LastName:    "Doe",
+			Email:       "john.doe@example.com",
+			Phone:       "1234567890",
+			YOE:         5,
+			Company:     "Tech Corp",
+			Designation: "Developer",
+			GithubId:    "johndoe",
+			LinkedIn:    "johndoe",
+			Website:     "https://johndoe.com",
+			DOB:         "1990-01-15",
+		},
+		IsValid:     true,
+		Description: "Valid DOB in YYYY-MM-DD format should pass validation",
+	},
 }
 
 var MockResponses = struct {
@@ -293,3 +366,4 @@ var EmptyUserIdTests = []struct {
 		Description:    "Null userId should return skip message",
 	},
 }
+ 
\ No newline at end of file
diff --git a/layer/utils/constants.go b/layer/utils/constants.go
index c1552a0..41c3428 100644
--- a/layer/utils/constants.go
+++ b/layer/utils/constants.go
@@ -28,6 +28,7 @@ type Res struct {
 	TwitterId   string `json:"twitter_id"`
 	InstagramId string `json:"instagram_id"`
 	Website     string `json:"website"`
+	DOB         string `json:"dob"`
 }
 
 type Diff struct {
@@ -46,6 +47,7 @@ type Diff struct {
 	TwitterId   string    `firestore:"twitter_id,omitempty"`
 	InstagramId string    `firestore:"instagram_id,omitempty"`
 	Website     string    `firestore:"website,omitempty"`
+	DOB         string    `firestore:"dob,omitempty"`
 }
 
 type Claims struct {
@@ -99,5 +101,6 @@ func diffToMap(diff Diff) map[string]interface{} {
 		"twitter_id":   diff.TwitterId,
 		"instagram_id": diff.InstagramId,
 		"website":      diff.Website,
+		"dob":          diff.DOB,
 	}
 }
diff --git a/layer/utils/validation.go b/layer/utils/validation.go
index 70b2ea5..50c8d10 100644
--- a/layer/utils/validation.go
+++ b/layer/utils/validation.go
@@ -26,6 +26,7 @@ func resToDiff(res Res, userId string) Diff {
 		TwitterId:   res.TwitterId,
 		InstagramId: res.InstagramId,
 		Website:     res.Website,
+		DOB:         res.DOB,
 	}
 }
 
@@ -43,6 +44,7 @@ func DiffToRes(diff Diff) Res {
 		TwitterId:   diff.TwitterId,
 		InstagramId: diff.InstagramId,
 		Website:     diff.Website,
+		DOB:         diff.DOB,
 	}
 }
 
@@ -57,5 +59,6 @@ func (res Res) Validate() error {
 		validation.Field(&res.Designation, validation.Required),
 		validation.Field(&res.GithubId, validation.Required),
 		validation.Field(&res.LinkedIn, validation.Required),
-		validation.Field(&res.Website, is.URL))
+		validation.Field(&res.Website, is.URL),
+		validation.Field(&res.DOB, validation.Date("2006-01-02")))
 }