diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..59bd8c1
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,31 @@
+name: CI — Lint & Test
+
+on:
+  push:
+    branches-ignore: [develop]
+  pull_request:
+    branches: ['**']
+
+jobs:
+  ci:
+    name: Lint & Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run linter
+        run: npm run lint
+
+      - name: Run tests
+        run: npm run test
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index d5b4465..2406722 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -1,4 +1,4 @@
-name: CI/CD Deploy to EC2
+name: CI/CD — Deploy to EC2
 
 on:
   push:
@@ -56,8 +56,6 @@ jobs:
             echo "POSTGRES_DB=${{ secrets.POSTGRES_DB }}" >> .env.production
             echo "POSTGRES_USER=${{ secrets.POSTGRES_USER }}" >> .env.production
             echo "POSTGRES_PASSWORD=${{ secrets.POSTGRES_PASSWORD }}" >> .env.production
-            echo "REDIS_HOST=localhost" >> .env.production
-            echo "REDIS_PORT=6379" >> .env.production
             echo "REDIS_URL=${{ secrets.REDIS_URL }}" >> .env.production
             echo "JWT_SECRET=${{ secrets.JWT_SECRET }}" >> .env.production
             echo "JWT_EXPIRES_IN=${{ secrets.JWT_EXPIRES_IN }}" >> .env.production
diff --git a/src/app.controller.spec.ts b/src/app.controller.spec.ts
index aa87cad..03956b4 100644
--- a/src/app.controller.spec.ts
+++ b/src/app.controller.spec.ts
@@ -17,8 +17,7 @@ describe('AppController', () => {
   describe('health check', () => {
     it('should return health check object', () => {
       expect(appController.getHealthCheck()).toEqual({
-        status_code: 200,
-        detail: 'ok',
+        status: 'ok',
         result: 'working',
       });
     });
diff --git a/src/modules/companies/__tests__/companies.controller.spec.ts b/src/modules/companies/__tests__/companies.controller.spec.ts
index 35247c7..e013e3a 100644
--- a/src/modules/companies/__tests__/companies.controller.spec.ts
+++ b/src/modules/companies/__tests__/companies.controller.spec.ts
@@ -1,6 +1,9 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import { CompaniesController } from '../controllers/companies.controller';
 import { CompaniesService } from '../services/companies.service';
+import { CompanyMembersService } from '../services/company-members.service';
+import { CompanyRepository } from '../repositories/company.repository';
+import { DataSource } from 'typeorm';
 
 describe('CompaniesController', () => {
   let controller: CompaniesController;
@@ -8,7 +11,33 @@ describe('CompaniesController', () => {
   beforeEach(async () => {
     const module: TestingModule = await Test.createTestingModule({
       controllers: [CompaniesController],
-      providers: [CompaniesService],
+      providers: [
+        CompaniesService,
+        {
+          provide: CompanyRepository,
+          useValue: {
+            find: jest.fn(),
+            findOne: jest.fn(),
+            save: jest.fn(),
+            remove: jest.fn(),
+            findBySlugOrFail: jest.fn(),
+            findBySlugRaw: jest.fn(),
+            findPaginated: jest.fn(),
+          },
+        },
+        {
+          provide: CompanyMembersService,
+          useValue: {
+            createInitialOwner: jest.fn(),
+          },
+        },
+        {
+          provide: DataSource,
+          useValue: {
+            transaction: jest.fn(),
+          },
+        },
+      ],
     }).compile();
 
     controller = module.get<CompaniesController>(CompaniesController);