diff --git a/backend/services/user.py b/backend/services/user.py
index 8e0b541..c354215 100644
--- a/backend/services/user.py
+++ b/backend/services/user.py
@@ -57,3 +57,47 @@ class UserService:
         finally:
             # return added object
             return user
+        
+    def delete(self, user: User) -> None:   
+        """
+        Delete a user 
+
+        Args: the user to delete
+
+        Returns: none
+        """
+        obj = self._session.get(UserEntity, user.id)
+
+        if obj is None:
+            raise Exception(f"No matching user found")
+        
+        self._session.delete(obj)
+        self._session.commit()
+
+
+
+    def update(self, user: User) -> User: 
+        """
+        Updates a user
+
+        Args: User to be updated
+
+        Returns: The updated User
+        """   
+        obj = self._session.get(UserEntity, user.id)
+
+        if obj is None:
+            raise Exception(f"No matching user found")
+        
+        obj.username = user.username
+        obj.role = user.role
+        obj.email = user.email
+        obj.program = user.program
+        obj.experience = user.experience
+        obj.group = user.group
+
+        self._session.commit()
+
+        return obj.to_model()
+
+
diff --git a/backend/test/services/user_test.py b/backend/test/services/user_test.py
index 34795a5..3f8b9b1 100644
--- a/backend/test/services/user_test.py
+++ b/backend/test/services/user_test.py
@@ -5,9 +5,10 @@ import pytest
 
 from ...services import UserService
 from .fixtures import user_svc
+from ...models.user_model import User
 from ...models.enum_for_models import ProgramTypeEnum
 
-from .user_test_data import employee, volunteer, admin, newUser
+from .user_test_data import employee, volunteer, admin, newUser, toDelete
 from . import user_test_data
 
 
@@ -43,4 +44,39 @@ def test_get_user_by_id(user_svc: UserService):
 def test_get_user_by_id_nonexistent(user_svc: UserService):
     """Test getting a user by id that does not exist"""
     with pytest.raises(Exception):
-        user_svc.get_by_id(5)
+        user_svc.get_by_id(100)
+
+
+def test_delete_user(user_svc: UserService):
+    """Test deleting a user"""
+    user_svc.delete(toDelete)
+    with pytest.raises(Exception):
+        user_svc.get_user_by_id(toDelete.id)
+
+
+def test_delete_user_nonexistent(user_svc: UserService):
+    """Test deleting a user that does not exist"""
+    with pytest.raises(Exception): 
+        user_svc.delete(newUser)
+
+def test_update_user(user_svc: UserService): 
+    """Test updating a user
+        Updating volunteer
+    """
+    user = user_svc.get_user_by_id(volunteer.id)
+    assert user is not None
+    user.username = "volunteer 1"
+    user.email = "newemail@compass.com"
+    updated_user = user_svc.update(user)
+    assert updated_user is not None
+    assert updated_user.id == user.id
+    assert updated_user.username == "volunteer 1"
+    assert updated_user.email == "newemail@compass.com"
+
+def test_update_user_nonexistent(user_svc: UserService):
+    """ Test updated a user that does not exist"""
+    with pytest.raises(Exception):
+        user_svc.update(newUser)
+
+
+
diff --git a/backend/test/services/user_test_data.py b/backend/test/services/user_test_data.py
index e050bda..ca72816 100644
--- a/backend/test/services/user_test_data.py
+++ b/backend/test/services/user_test_data.py
@@ -59,7 +59,18 @@ newUser = User(
     role=roles.VOLUNTEER,
 )
 
-users = [volunteer, employee, admin]
+toDelete = User(
+    id=5,
+    username="delete",
+    email="delete@compass.com",
+    experience=0,
+    group="none",
+    program=[programs.COMMUNITY],
+    created_at=datetime.now(),
+    role=roles.VOLUNTEER
+)
+
+users = [volunteer, employee, admin, toDelete]
 
 
 from sqlalchemy import text