Виталий

Vitaliy
PYTHON / DJANGO BACKEND DEVELOPER
Ukraine · Remote | [open contact info](look above in the "contact info" section) | Telegram: @paffos_0 | GitHub: https://github.com/Vitaliy-paffos
BACKEND PROFILE
I build REST APIs with Python and Django, focusing on authentication, database relationships, business logic,
permissions and testing. Looking for a Junior Backend Developer position.

01 / TECHNICAL SKILLS
Backend Python · Django · Django REST Framework · REST API

Database SQL · Django ORM · SQLite · PostgreSQL (basic)

API JWT / SimpleJWT · Swagger / OpenAPI · Filtering ·
Search · Pagination

Engineering Permissions · Transactions · Query optimization · API
testing

Tools Git · GitHub · Docker · Postman

02 / PROJECT

E-COMMERCE REST API
Django · Django REST Framework · JWT · Django ORM · Docker · Swagger
A complete backend for an online store with separate applications for accounts, products, cart and orders.

• Authentication: registration, JWT login, token refresh and authenticated profiles.
• Catalog: products and categories with filtering, search, ordering and pagination.
• Business logic: shopping cart and order creation with transactional processing.
• Reviews: ratings from 1–5 and a database constraint allowing one review per user per product.
• Permissions: public product access, authenticated user operations and admin-only product management.
• ORM: query optimization using select_related, prefetch_related and annotate with Count/Avg.
• Testing & docs: API tests with APITestCase and interactive Swagger/OpenAPI documentation.
• Containerization: Dockerfile and Docker Compose configuration.
GitHub: https://github.com/Vitaliy-paffos/shop_api-drf-project-

03 / ENGINEERING
Request - ViewSet - Serializer - ORM - Database - Response

• Used separate serializers for different API actions.
• Implemented permissions for users and administrators.
• Optimized database queries with select_related, prefetch_related, and annotate.
• Used transaction.atomic() when creating orders.

04 / EDUCATION & LANGUAGES
Independent Backend Development - practical study and project development in Python/Django
English: B1/B2 | Ukrainian: Native | Russian: Native

05 / TARGET
Junior Backend Developer / Junior Python Developer