diff --git a/app/core/dependencies.py b/app/core/dependencies.py
new file mode 100644
index 0000000..9e5290d
--- /dev/null
+++ b/app/core/dependencies.py
@@ -0,0 +1,15 @@
+from fastapi import Depends
+from sqlalchemy.ext.asyncio import AsyncSession
+from app.db.session import get_db
+from app.repositories.job_repository import JobRepository
+from app.services.job_service import JobService
+
+
+def get_job_repository(db: AsyncSession = Depends(get_db)) -> JobRepository:
+    """Dependency to retrieve JobRepository"""
+    return JobRepository(db)
+
+
+def get_job_service(repo: JobRepository = Depends(get_job_repository)) -> JobService:
+    """Dependency to retrieve JobService"""
+    return JobService(repo)
diff --git a/app/core/exceptions.py b/app/core/exceptions.py
index f44b4d9..e58ceab 100644
--- a/app/core/exceptions.py
+++ b/app/core/exceptions.py
@@ -1,11 +1,20 @@
 from fastapi import HTTPException, status
+
+
 class AlemnoException(Exception):
+    """Base exception for Alemno Payments Application"""
     pass
+
+
 class JobNotFoundException(AlemnoException):
+    """Raised when a job is not found"""
     def __init__(self, job_id: str):
         self.job_id = job_id
         super().__init__(f"Job with ID {job_id} not found")
+
+
 class InvalidCSVException(AlemnoException):
+    """Raised when the uploaded CSV is invalid"""
     def __init__(self, detail: str):
         self.detail = detail
         super().__init__(detail)
diff --git a/tests/conftest.py b/tests/conftest.py
index 6a6254f..a46deaf 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -3,11 +3,15 @@ from typing import AsyncGenerator
 import pytest
 from httpx import ASGITransport, AsyncClient
 from sqlalchemy.ext.asyncio import create_async_engine, async_sessionmaker, AsyncSession
+
 from app.core.config import settings
 from app.core.dependencies import get_db
+from app.db.base import Base
 from app.main import app
+
 # Use a test database suffix or a separate database for testing
 TEST_DATABASE_URL = settings.DATABASE_URL.replace(settings.POSTGRES_DB, f"test_{settings.POSTGRES_DB}")
+
 # Create async engine for test db
 test_engine = create_async_engine(
     TEST_DATABASE_URL,
@@ -58,3 +62,39 @@ def initialize_test_db():
             loop.run_until_complete(teardown_db())
         except Exception:
             pass
+
+
+@pytest.fixture
+async def db_session() -> AsyncGenerator[AsyncSession, None]:
+    """Provide a transactional test database session."""
+    if _db_offline:
+        pytest.skip("PostgreSQL database is offline")
+        return
+
+    async with TestAsyncSessionLocal() as session:
+        try:
+            yield session
+            await session.commit()
+        except Exception:
+            await session.rollback()
+            raise
+        finally:
+            await session.close()
+
+
+@pytest.fixture
+async def client(db_session: AsyncSession) -> AsyncGenerator[AsyncClient, None]:
+    """Provide an HTTPX AsyncClient for FastAPI endpoint testing with db overrides."""
+    # Override get_db dependency to use the test session
+    async def override_get_db() -> AsyncGenerator[AsyncSession, None]:
+        yield db_session
+
+    app.dependency_overrides[get_db] = override_get_db
+    
+    async with AsyncClient(
+        transport=ASGITransport(app=app),
+        base_url="http://test",
+    ) as client:
+        yield client
+        
+    app.dependency_overrides.clear()
diff --git a/tests/repositories/test_job_repository.py b/tests/repositories/test_job_repository.py
new file mode 100644
index 0000000..b370a07
--- /dev/null
+++ b/tests/repositories/test_job_repository.py
@@ -0,0 +1,56 @@
+import pytest
+from sqlalchemy.ext.asyncio import AsyncSession
+from app.repositories.job_repository import JobRepository
+from app.db.models.job import Job
+
+# Set up asyncio marker
+pytestmark = pytest.mark.asyncio
+
+
+async def test_create_and_get_job(db_session: AsyncSession):
+    repo = JobRepository(db_session)
+    
+    # Create job
+    job = await repo.create(filename="test_transactions.csv")
+    assert job.id is not None
+    assert job.status == "pending"
+    assert job.filename == "test_transactions.csv"
+    
+    # Retrieve job
+    fetched_job = await repo.get_by_id(job.id)
+    assert fetched_job is not None
+    assert fetched_job.id == job.id
+    assert fetched_job.filename == "test_transactions.csv"
+
+
+async def test_update_job(db_session: AsyncSession):
+    repo = JobRepository(db_session)
+    job = await repo.create(filename="update_test.csv")
+    
+    # Update status and count
+    updated = await repo.update(job, status="completed", row_count=10, summary={"total": 100})
+    assert updated.status == "completed"
+    assert updated.row_count == 10
+    assert updated.summary == {"total": 100}
+    
+    # Retrieve to verify persistence
+    fetched = await repo.get_by_id(job.id)
+    assert fetched.status == "completed"
+    assert fetched.row_count == 10
+
+
+async def test_list_jobs(db_session: AsyncSession):
+    repo = JobRepository(db_session)
+    
+    # Clear existing if any
+    await repo.create(filename="list_1.csv")
+    await repo.create(filename="list_2.csv")
+    
+    jobs = await repo.list_all()
+    assert len(jobs) >= 2
+    
+    pending_jobs = await repo.list_all(status="pending")
+    assert len(pending_jobs) >= 2
+    
+    completed_jobs = await repo.list_all(status="completed")
+    assert len(completed_jobs) == 1  # From the update test above