diff --git a/apps/api/src/tests/jobValidator.test.js b/apps/api/src/tests/jobValidator.test.js
new file mode 100644
index 0000000000..5feee02956
--- /dev/null
+++ b/apps/api/src/tests/jobValidator.test.js
@@ -0,0 +1,17 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import { createJobSchema } from "../validators/job.js";
+
+const validJob = {
+  title: "Build search filters",
+  description: "Add search filters for client project discovery.",
+  budgetMin: 100,
+  budgetMax: 500,
+  categoryId: "cat_web",
+  skills: ["node"]
+};
+
+test("createJobSchema rejects non-finite budget values", () => {
+  assert.equal(createJobSchema.safeParse({ ...validJob, budgetMin: Infinity }).success, false);
+  assert.equal(createJobSchema.safeParse({ ...validJob, budgetMax: Infinity }).success, false);
+});
diff --git a/apps/api/src/validators/job.js b/apps/api/src/validators/job.js
index 5593a844af..dce585538f 100644
--- a/apps/api/src/validators/job.js
+++ b/apps/api/src/validators/job.js
@@ -3,8 +3,8 @@ import { z } from "zod";
 export const createJobSchema = z.object({
   title: z.string().min(4),
   description: z.string().min(10),
-  budgetMin: z.number().nonnegative(),
-  budgetMax: z.number().nonnegative(),
+  budgetMin: z.number().finite().nonnegative(),
+  budgetMax: z.number().finite().nonnegative(),
   categoryId: z.string().min(1),
   skills: z.array(z.string().min(1)).default([])
 });