diff --git a/backend/migrations/versions/2026_03_10_1618-983168a63271_add_notifications.py b/backend/migrations/versions/2026_03_10_1618-983168a63271_add_notifications.py
new file mode 100644
index 000000000..9c20f6b2d
--- /dev/null
+++ b/backend/migrations/versions/2026_03_10_1618-983168a63271_add_notifications.py
@@ -0,0 +1,63 @@
+# Copyright 2026 Canonical Ltd.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License version 3, as
+# published by the Free Software Foundation.
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+# SPDX-FileCopyrightText: Copyright 2026 Canonical Ltd.
+# SPDX-License-Identifier: AGPL-3.0-only
+
+"""Add notifications
+
+Revision ID: 983168a63271
+Revises: 2f7a130290ea
+Create Date: 2026-03-10 16:18:40.152277+00:00
+
+"""
+
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = "983168a63271"
+down_revision = "2f7a130290ea"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table(
+        "notification",
+        sa.Column("user_id", sa.Integer(), nullable=False),
+        sa.Column(
+            "notification_type",
+            sa.Enum("USER_ASSIGNED_ARTEFACT_REVIEW", "USER_ASSIGNED_ENVIRONMENT_REVIEW", name="notificationtype"),
+            nullable=False,
+        ),
+        sa.Column("target_url", sa.String(), nullable=True),
+        sa.Column("dismissed_at", sa.DateTime(), nullable=True),
+        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column("created_at", sa.DateTime(), nullable=False),
+        sa.Column("updated_at", sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(
+            ["user_id"], ["app_user.id"], name=op.f("notification_user_id_fkey"), ondelete="CASCADE"
+        ),
+        sa.PrimaryKeyConstraint("id", name=op.f("notification_pkey")),
+    )
+    op.create_index(op.f("notification_user_id_ix"), "notification", ["user_id"], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f("notification_user_id_ix"), table_name="notification")
+    op.drop_table("notification")
+    op.execute("DROP TYPE IF EXISTS notificationtype")
+    # ### end Alembic commands ###
diff --git a/backend/test_observer/controllers/notifications/models.py b/backend/test_observer/controllers/notifications/models.py
new file mode 100644
index 000000000..6324a2432
--- /dev/null
+++ b/backend/test_observer/controllers/notifications/models.py
@@ -0,0 +1,35 @@
+# Copyright 2024 Canonical Ltd.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License version 3, as
+# published by the Free Software Foundation.
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+# SPDX-FileCopyrightText: Copyright 2024 Canonical Ltd.
+# SPDX-License-Identifier: AGPL-3.0-only
+
+from datetime import datetime
+
+from pydantic import BaseModel, ConfigDict
+
+from test_observer.data_access.models_enums import NotificationType
+
+
+class NotificationResponse(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+    id: int
+    user_id: int
+    notification_type: NotificationType
+    target_url: str | None
+    created_at: datetime
+    dismissed_at: datetime | None
+
+
+class NotificationsResponse(BaseModel):
+    notifications: list[NotificationResponse]
diff --git a/backend/test_observer/data_access/models.py b/backend/test_observer/data_access/models.py
index e3403b657..a96c34c14 100644
--- a/backend/test_observer/data_access/models.py
+++ b/backend/test_observer/data_access/models.py
@@ -51,6 +51,7 @@
     FamilyName,
     IssueSource,
     IssueStatus,
+    NotificationType,
     TestExecutionStatus,
     TestResultStatus,
 )
@@ -233,6 +234,20 @@ class UserSession(Base):
     user: Mapped[User] = relationship(back_populates="sessions", foreign_keys=[user_id])
 
 
+class Notification(Base):
+    __tablename__ = "notification"
+
+    user_id: Mapped[int] = mapped_column(ForeignKey("app_user.id", ondelete="CASCADE"), index=True)
+    notification_type: Mapped[NotificationType]
+    target_url: Mapped[str | None] = mapped_column(default=None)
+    dismissed_at: Mapped[datetime | None] = mapped_column(default=None)
+
+    user: Mapped[User] = relationship(foreign_keys=[user_id])
+
+    def __repr__(self) -> str:
+        return data_model_repr(self, "user_id", "notification_type")
+
+
 class Artefact(Base):
     """A model to represent artefacts (snaps, debs, images)"""
 
diff --git a/backend/test_observer/data_access/models_enums.py b/backend/test_observer/data_access/models_enums.py
index e0b20bf13..5f5d61b83 100644
--- a/backend/test_observer/data_access/models_enums.py
+++ b/backend/test_observer/data_access/models_enums.py
@@ -118,3 +118,8 @@ class IssueStatus(StrEnum):
     UNKNOWN = "unknown"
     OPEN = "open"
     CLOSED = "closed"
+
+
+class NotificationType(StrEnum):
+    USER_ASSIGNED_ARTEFACT_REVIEW = "USER_ASSIGNED_ARTEFACT_REVIEW"
+    USER_ASSIGNED_ENVIRONMENT_REVIEW = "USER_ASSIGNED_ENVIRONMENT_REVIEW"