diff --git a/services/backend/api/v1/review/auth.py b/services/backend/api/v1/review/auth.py
index 9fbd270..70e24bb 100644
--- a/services/backend/api/v1/review/auth.py
+++ b/services/backend/api/v1/review/auth.py
@@ -1,26 +1,25 @@
 from abc import ABC
-from typing import Optional
 
 from django.http import HttpRequest
-from django.shortcuts import get_object_or_404
 from django.urls import resolve
 from ninja.errors import AuthenticationError
-from ninja.security import APIKeyQuery
 from ninja.security.apikey import APIKeyBase
 
 from apps.review.models import Reviewer
 
+
 class APIKeyPath(APIKeyBase, ABC):
     openapi_in: str = "path"
 
-    def _get_key(self, request: HttpRequest) -> Optional[str]:
+    def _get_key(self, request: HttpRequest) -> str | None:
         func, args, kwargs = resolve(request.path)
         return kwargs.get(self.param_name)
 
+
 class ReviewerAuth(APIKeyPath):
     param_name = "token"
 
     def authenticate(self, request, token):
         if not (reviewer := Reviewer.objects.filter(token=token).first()):
             raise AuthenticationError
-        return reviewer
\ No newline at end of file
+        return reviewer
diff --git a/services/backend/api/v1/review/schemas.py b/services/backend/api/v1/review/schemas.py
index 824e62d..70bf9b3 100644
--- a/services/backend/api/v1/review/schemas.py
+++ b/services/backend/api/v1/review/schemas.py
@@ -1,8 +1,8 @@
-from typing import List, Literal
+from typing import Literal
 from uuid import UUID
 
 from django.http import HttpRequest
-from ninja import Schema, ModelSchema
+from ninja import ModelSchema, Schema
 
 from apps.review.models import Reviewer
 from apps.task.models import CompetetionTaskSumbission
@@ -11,6 +11,7 @@ from apps.task.models import CompetetionTaskSumbission
 class PingOut(Schema):
     status: str = "ok"
 
+
 class ReviewerOut(ModelSchema):
     id: UUID
 
@@ -18,20 +19,19 @@ class ReviewerOut(ModelSchema):
         model = Reviewer
         exclude = ("token",)
 
+
 class SubmissionOut(ModelSchema):
     id: UUID
     status: Literal["sent", "checking", "checked"]
 
     class Meta:
         model = CompetetionTaskSumbission
-        exclude = (
-            "user",
-                   )
+        exclude = ("user",)
+
 
 class SubmissionsOut(Schema):
     submissions: list[SubmissionOut] = []
 
     @staticmethod
-    def resolve_submissions(self, context: HttpRequest) -> List[SubmissionOut]:
-        print(CompetetionTaskSumbission.objects.all())
-        return list(CompetetionTaskSumbission.objects.all())
\ No newline at end of file
+    def resolve_submissions(self, context: HttpRequest) -> list[SubmissionOut]:
+        return list(CompetetionTaskSumbission.objects.all())
diff --git a/services/backend/api/v1/review/views.py b/services/backend/api/v1/review/views.py
index b3e1bdf..d628faf 100644
--- a/services/backend/api/v1/review/views.py
+++ b/services/backend/api/v1/review/views.py
@@ -3,19 +3,20 @@ from http import HTTPStatus as status
 from django.http import HttpRequest
 from ninja import Router
 
-from api.v1.review import schemas
 from api.v1 import schemas as global_schemas
+from api.v1.review import schemas
 
 router = Router(tags=["review"])
 
 
 @router.get(
-    "{token}/tasks",
+    "{token}/submissions",
     response={
         status.OK: schemas.SubmissionsOut,
     },
+    description="Список отправок, на проверку которых назначен ревьюер"
 )
-def ping(request: HttpRequest, token) -> tuple[status, schemas.SubmissionsOut]:
+def get_submissions(request: HttpRequest, token) -> tuple[status, schemas.SubmissionsOut]:
     return status.OK, schemas.SubmissionsOut()
 
 
@@ -23,12 +24,9 @@ def ping(request: HttpRequest, token) -> tuple[status, schemas.SubmissionsOut]:
     "{token}",
     response={
         status.OK: schemas.ReviewerOut,
-        status.UNAUTHORIZED: global_schemas.UnauthorizedError
+        status.UNAUTHORIZED: global_schemas.UnauthorizedError,
     },
-    description="token есть и в сваггер авторизации, но оно не работает, не верьте. подставляйте токен вручную в query"
+    description="token есть и в сваггер авторизации, но оно не работает, не верьте. подставляйте токен вручную в query",
 )
-def get_reviewer(
-    request: HttpRequest,
-    token: str
-):
-    return status.OK, request.auth
\ No newline at end of file
+def get_reviewer_profile(request: HttpRequest, token: str):
+    return status.OK, request.auth
diff --git a/services/backend/api/v1/router.py b/services/backend/api/v1/router.py
index e85570a..56a5206 100644
--- a/services/backend/api/v1/router.py
+++ b/services/backend/api/v1/router.py
@@ -7,8 +7,8 @@ from api.v1.auth import BearerAuth
 from api.v1.competition.views import router as competition_router
 from api.v1.ping.views import router as ping_router
 from api.v1.review.auth import ReviewerAuth
-from api.v1.user.views import router as user_router
 from api.v1.review.views import router as review_router
+from api.v1.user.views import router as user_router
 
 router = NinjaAPI(
     title="DataRush API",
@@ -39,6 +39,5 @@ router.add_router(
 )
 
 
-
 for exception, handler in handlers.exception_handlers:
     router.add_exception_handler(exception, partial(handler, router=router))
diff --git a/services/backend/api/v1/task/schemas.py b/services/backend/api/v1/task/schemas.py
index ecc98f3..e5a4046 100644
--- a/services/backend/api/v1/task/schemas.py
+++ b/services/backend/api/v1/task/schemas.py
@@ -1,8 +1,8 @@
 from typing import Literal
 from uuid import UUID
+
 from ninja import ModelSchema, Schema
 
-from apps.competition.models import State
 from apps.task.models import CompetitionTask
 
 
diff --git a/services/backend/api/v1/task/views.py b/services/backend/api/v1/task/views.py
index 6710c95..208dd36 100644
--- a/services/backend/api/v1/task/views.py
+++ b/services/backend/api/v1/task/views.py
@@ -3,21 +3,20 @@ from uuid import UUID
 
 from django.shortcuts import get_object_or_404
 from ninja import Router
-from django.shortcuts import get_object_or_404
 
-from api.v1.schemas import NotFoundError, UnauthorizedError, ForbiddenError
 from api.v1.ping.schemas import PingOut
+from api.v1.schemas import ForbiddenError, NotFoundError, UnauthorizedError
 from api.v1.task.schemas import (
     TaskOutSchema,
-    TaskSubmissionOut,
     TaskSubmissionIn,
-)
-from apps.task.models import (
-    Competition,
-    CompetitionTask,
-    CompetetionTaskSumbission,
+    TaskSubmissionOut,
 )
 from apps.competition.models import State
+from apps.task.models import (
+    CompetetionTaskSumbission,
+    Competition,
+    CompetitionTask,
+)
 
 router = Router(tags=["competition"])
 
@@ -49,7 +48,9 @@ def start_competition(request, competition_id: UUID) -> PingOut:
         status.NOT_FOUND: NotFoundError,
     },
 )
-def get_competition_tasks(request, competition_id: UUID) -> list[TaskOutSchema]:
+def get_competition_tasks(
+    request, competition_id: UUID
+) -> list[TaskOutSchema]:
     competition = get_object_or_404(Competition, pk=competition_id)
     state = State.objects.filter(
         user=request.auth, competition=competition, state="started"
@@ -57,7 +58,9 @@ def get_competition_tasks(request, competition_id: UUID) -> list[TaskOutSchema]:
     if not state:
         return 403, ForbiddenError()
 
-    return status.OK, CompetitionTask.objects.filter(competition=competition).all()
+    return status.OK, CompetitionTask.objects.filter(
+        competition=competition
+    ).all()
 
 
 @router.get(
diff --git a/services/backend/api/v1/user/views.py b/services/backend/api/v1/user/views.py
index f4629b7..ff49988 100644
--- a/services/backend/api/v1/user/views.py
+++ b/services/backend/api/v1/user/views.py
@@ -64,6 +64,7 @@ def sign_in(request, data: LoginSchema):
 def get_me(request):
     return 200, request.auth
 
+
 @router.get(
     path="/user/{user_id}",
     response={
diff --git a/services/backend/apps/core/management/commands/generate_data.py b/services/backend/apps/core/management/commands/generate_data.py
new file mode 100644
index 0000000..c781811
--- /dev/null
+++ b/services/backend/apps/core/management/commands/generate_data.py
@@ -0,0 +1,136 @@
+import random
+import uuid
+from datetime import timedelta
+
+from django.contrib.auth.hashers import make_password
+from django.core.files.base import ContentFile
+from django.core.management.base import BaseCommand
+from django.utils import timezone
+
+from apps.competition.models import Competition, State
+from apps.task.models import CompetetionTaskSumbission, CompetitionTask
+from apps.user.models import User, UserRole
+
+
+class Command(BaseCommand):
+    help = "Generate sample data for Users, Competitions, Tasks, Submissions, and States."
+
+    def handle(self, *args, **options):
+        self.stdout.write("Starting data generation...")
+        users = self.create_users(5)
+        competitions = self.create_competitions(2, users)
+        tasks = self.create_tasks(competitions)
+        self.create_submissions(tasks, users)
+        self.create_states(competitions, users)
+        self.stdout.write("Data generation completed.")
+
+    def create_users(self, count):
+        users = []
+        for i in range(1, count + 1):
+            email = f"user{i}@example.com"
+            username = f"user{i}"
+            password = (
+                "password123"  # In production, use proper password handling.
+            )
+            role = random.choice(
+                [UserRole.STUDENT.value, UserRole.METODIST.value]
+            )
+            user, created = User.objects.get_or_create(
+                email=email,
+                defaults={
+                    "username": username,
+                    "password": make_password(password),
+                    "status": role,
+                },
+            )
+            users.append(user)
+            self.stdout.write(f"Created user: {username}")
+        return users
+
+    def create_competitions(self, count, users):
+        competitions = []
+        now = timezone.now()
+        for i in range(1, count + 1):
+            title = f"Competition {i}"
+            description = f"Description for competition {i}"
+            start_date = now - timedelta(days=random.randint(1, 10))
+            end_date = now + timedelta(days=random.randint(1, 10))
+            competition = Competition.objects.create(
+                title=title,
+                description=description,
+                start_date=start_date,
+                end_date=end_date,
+                type="solo",  # assuming only one type for now
+                participation_type=random.choice(["edu", "competitive"]),
+            )
+            # Add random participants
+            selected_users = random.sample(
+                users, k=min(len(users), random.randint(1, len(users)))
+            )
+            competition.participants.add(*selected_users)
+            competitions.append(competition)
+            self.stdout.write(f"Created competition: {title}")
+        return competitions
+
+    def create_tasks(self, competitions):
+        tasks = []
+        task_types = [
+            CompetitionTask.CompetitionTaskType.INPUT.value,
+        ]
+        for comp in competitions:
+            # Create 3 tasks per competition
+            for i in range(1, 4):
+                task_type = random.choice(task_types)
+                title = f"Task {i} for {comp.title}"
+                description = f"Task description for task {i} in {comp.title}"
+                task = CompetitionTask.objects.create(
+                    competition=comp,
+                    title=title,
+                    description=description,
+                    type=task_type,
+                    points=random.randint(1, 10),
+                )
+                tasks.append(task)
+                self.stdout.write(f"Created task: {title} (type: {task_type})")
+        return tasks
+
+    def create_submissions(self, tasks, users):
+        for task in tasks:
+            # Each task will get between 1 and 3 submissions
+            num_submissions = random.randint(1, 3)
+            for _ in range(num_submissions):
+                user = random.choice(users)
+                # Create a dummy content file
+                dummy_content = ContentFile(
+                    b"Submission content",
+                    name=f"submission_{uuid.uuid4().hex}.txt",
+                )
+                submission = CompetetionTaskSumbission.objects.create(
+                    user=user,
+                    task=task,
+                    earned_points=random.randint(
+                        0, task.points if task.points else 10
+                    ),
+                    content=dummy_content,
+                )
+                submission.save()
+                self.stdout.write(
+                    f"Created submission for task '{task.title}' by user '{user.username}'"
+                )
+
+    def create_states(self, competitions, users):
+        # For each competition, create a State for some of its participants
+        state_choices = [choice for choice in State.StateChoices.values]
+        for comp in competitions:
+            for user in comp.participants.all():
+                state_obj, created = State.objects.get_or_create(
+                    user=user,
+                    competition=comp,
+                    defaults={
+                        "state": random.choice(state_choices),
+                        "changed_at": timezone.now(),
+                    },
+                )
+                self.stdout.write(
+                    f"Created state '{state_obj.state}' for user '{user.username}' in competition '{comp.title}'"
+                )
diff --git a/services/backend/apps/review/models.py b/services/backend/apps/review/models.py
index 58bd512..02b74af 100644
--- a/services/backend/apps/review/models.py
+++ b/services/backend/apps/review/models.py
@@ -7,4 +7,4 @@ class Reviewer(BaseModel):
     name = models.CharField(max_length=100)
     surname = models.CharField(max_length=100)
 
-    token = models.CharField(max_length=100)
\ No newline at end of file
+    token = models.CharField(max_length=100)
diff --git a/services/backend/apps/task/models.py b/services/backend/apps/task/models.py
index 8b38b3a..08fe998 100644
--- a/services/backend/apps/task/models.py
+++ b/services/backend/apps/task/models.py
@@ -1,13 +1,13 @@
-from random import choice
 from uuid import uuid4
 
 from django.db import models
 
-from apps.task.validators import ContestTaskCriteriesValidator
 from apps.competition.models import Competition
 from apps.core.models import BaseModel
+from apps.task.validators import ContestTaskCriteriesValidator
 from apps.user.models import User
 
+
 class CompetitionTask(BaseModel):
     class CompetitionTaskType(models.TextChoices):
         INPUT = "input"
@@ -45,7 +45,7 @@ class CompetetionTaskSumbission(BaseModel):
         CHECKED = "checked"
 
     def submission_content_upload_to(instance, filename) -> str:
-        return f"/submissions/{instance.id}/content"
+        return f"submissions/{instance.id}/content"
 
     def submission_stdout_upload_to(instance, filename) -> str:
         return f"/submissions/{instance.id}/stdout"
diff --git a/services/backend/apps/task/tasks.py b/services/backend/apps/task/tasks.py
index b2f0286..9899246 100644
--- a/services/backend/apps/task/tasks.py
+++ b/services/backend/apps/task/tasks.py
@@ -1,9 +1,10 @@
-import tempfile
+import ast
+import hashlib
 import os
 import sys
-import ast
+import tempfile
 from io import StringIO
-import hashlib
+
 from config.celery import app
 
 ALLOWED_MODULES = {
@@ -29,7 +30,7 @@ def validate_code(code_str):
     try:
         tree = ast.parse(code_str)
     except SyntaxError as e:
-        raise SecurityException(f"Syntax error: {str(e)}")
+        raise SecurityException(f"Syntax error: {e!s}")
 
     class ImportVisitor(ast.NodeVisitor):
         def visit_Import(self, node):
@@ -56,10 +57,10 @@ def validate_code(code_str):
     try:
         ImportVisitor().visit(tree)
         SecurityVisitor().visit(tree)
-    except SecurityException as e:
+    except SecurityException:
         raise
     except Exception as e:
-        raise SecurityException(f"Security check failed: {str(e)}")
+        raise SecurityException(f"Security check failed: {e!s}")
 
 
 def secure_exec(code_str, result_path):
@@ -95,7 +96,7 @@ def secure_exec(code_str, result_path):
                     result_content = f.read()
 
         except Exception as e:
-            raise RuntimeError(f"Execution error: {str(e)}")
+            raise RuntimeError(f"Execution error: {e!s}")
         finally:
             os.chdir(original_dir)
             sys.stdout = original_stdout
@@ -121,8 +122,8 @@ def analyze_data_task(self, code_str, result_path, expected_bytes):
         }
 
     except SecurityException as e:
-        return {"success": False, "error": f"Security violation: {str(e)}"}
+        return {"success": False, "error": f"Security violation: {e!s}"}
     except RuntimeError as e:
-        return {"success": False, "error": f"Execution error: {str(e)}"}
+        return {"success": False, "error": f"Execution error: {e!s}"}
     except Exception as e:
-        return {"success": False, "error": f"Unexpected error: {str(e)}"}
+        return {"success": False, "error": f"Unexpected error: {e!s}"}
diff --git a/services/backend/apps/task/validators.py b/services/backend/apps/task/validators.py
index f028f52..ec8024f 100644
--- a/services/backend/apps/task/validators.py
+++ b/services/backend/apps/task/validators.py
@@ -12,12 +12,12 @@ class Criteria(BaseModel):
 
 class ContestTaskCriteriesValidator:
     def __call__(self, instance):
-        if instance.criterties and not isinstance(instance.criterties, list):
+        if instance.criteries and not isinstance(instance.criteries, list):
             err = "criteries must be a valid dictionary"
             raise ValidationError(err)
 
         try:
-            for criteria in instance.criterties:
+            for criteria in instance.criteries if instance.criteries else []:
                 Criteria(**criteria)
         except PydanticValidationError:
             err = "invalid criteries data"
diff --git a/services/backend/apps/user/test.py b/services/backend/apps/user/test.py
index 437da0d..cad7709 100644
--- a/services/backend/apps/user/test.py
+++ b/services/backend/apps/user/test.py
@@ -24,9 +24,6 @@ class TestSignUp(TestCase):
             user.full_clean()
 
     def test_missing_params(self):
-        user = User(
-            password="123123",
-            username="132131232131"
-        )
+        user = User(password="123123", username="132131232131")
         with self.assertRaises(ValidationError):
             user.full_clean()
diff --git a/services/backend/config/settings.py b/services/backend/config/settings.py
index af79c52..63e2122 100644
--- a/services/backend/config/settings.py
+++ b/services/backend/config/settings.py
@@ -446,7 +446,7 @@ INSTALLED_APPS = [
     "apps.user",
     "apps.competition",
     "apps.review",
-    "apps.task"
+    "apps.task",
 ]
 
 # GUID