diff --git a/server/src/module/ats/__tests__/ats.service.test.ts b/server/src/module/ats/__tests__/ats.service.test.ts
index 5e9148aee..1dc24c963 100644
--- a/server/src/module/ats/__tests__/ats.service.test.ts
+++ b/server/src/module/ats/__tests__/ats.service.test.ts
@@ -106,11 +106,12 @@ function mockCacheMiss() {
 
 function mockValidPdf(text = VALID_RESUME_TEXT) {
   vi.mocked(PDFParse).mockImplementation(
-    () =>
-      ({
+    function () {
+      return {
         getText: vi.fn().mockResolvedValue({ text }),
         destroy: vi.fn().mockResolvedValue(undefined),
-      }) as any,
+      } as any;
+    }
   );
 }
 
@@ -183,11 +184,12 @@ describe("AtsService", () => {
       mockUserOwnsResume();
       mockCacheMiss();
       vi.mocked(PDFParse).mockImplementation(
-        () =>
-          ({
+        function () {
+          return {
             getText: vi.fn().mockResolvedValue({ text: "too short" }),
             destroy: vi.fn().mockResolvedValue(undefined),
-          }) as any,
+          } as any;
+        }
       );
 
       await expect(
@@ -466,11 +468,12 @@ describe("AtsService", () => {
     it("throws when PDF text extraction yields insufficient content", async () => {
       mockUserOwnsResume();
       vi.mocked(PDFParse).mockImplementation(
-        () =>
-          ({
+        function () {
+          return {
             getText: vi.fn().mockResolvedValue({ text: "tiny" }),
             destroy: vi.fn().mockResolvedValue(undefined),
-          }) as any,
+          } as any;
+        }
       );
 
       await expect(
diff --git a/server/src/module/professor/professor.service.ts b/server/src/module/professor/professor.service.ts
index 992800af4..b014a0468 100644
--- a/server/src/module/professor/professor.service.ts
+++ b/server/src/module/professor/professor.service.ts
@@ -1,5 +1,5 @@
 import { prisma } from "../../database/db.js";
-import { cacheGet, cacheSet } from "../../utils/cache.js";
+import { cacheGet, cacheSet, cacheDelPattern } from "../../utils/cache.js";
 
 const PROF_TTL = 3600;
 
@@ -106,5 +106,23 @@ export class ProfessorService {
     await cacheSet(cacheKey, result, PROF_TTL);
     return result;
   }
+
+  async create(data: any) {
+    const record = await prisma.iitProfessor.create({ data });
+    await cacheDelPattern("professors:");
+    return record;
+  }
+
+  async update(id: number, data: any) {
+    const record = await prisma.iitProfessor.update({ where: { id }, data });
+    await cacheDelPattern("professors:");
+    return record;
+  }
+
+  async delete(id: number) {
+    const record = await prisma.iitProfessor.delete({ where: { id } });
+    await cacheDelPattern("professors:");
+    return record;
+  }
 }