Владислав

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VLADYSLAV LYSYI github.com/vladyslavlysyi
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Python Developer
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SUMMARY
Python Backend Developer with 1+ year of commercial experience building production web applications with Python, Django,
Django REST Framework, FastAPI, PostgreSQL, REST APIs, and Docker. Experienced in backend service development, API
design, SQL/database work, automated testing, debugging, code review, and Git-based workflows. Hands-on experience with Redis,
Celery, JWT, WebSockets, third-party integrations, and cloud deployment.
SKILLS
Languages: Python, SQL, JavaScript, HTML5, CSS3
Backend: Django, Django REST Framework (DRF), FastAPI, Celery, asyncio, Pydantic
Databases & ORM: PostgreSQL, Django ORM, SQLAlchemy, Redis, MongoDB, asyncpg
API & Security: REST APIs, JWT, Authentication, Authorization, Role-Based Access Control, WebSockets
Testing: pytest, Unit Testing, Integration Testing, Debugging
DevOps & Infrastructure: Docker, Docker Compose, Git, GitHub Actions, CI/CD, Nginx
Cloud: DigitalOcean, Render, Vercel
EXPERIENCE
Appexoft - Junior Python Developer | Jun 2025 - Jul 2026
• Developed and maintained 20+ production REST API endpoints using Python, Django, Django REST Framework, PostgreSQL, and
Django ORM for core web application functionality.
• Optimized Django ORM queries and database indexes, reducing API response time by ~40% and unnecessary database load by ~30%.
• Improved validation, exception handling, and third-party API integrations, reducing production backend errors by 27%.
• Implemented Redis caching, Celery background tasks, JWT authentication, and role-based permissions to improve performance,
reliability, and security.
• Increased automated test coverage of critical backend functionality from ~55% to 80%+ and delivered 15+ production features with
frontend developers and QA.
Freelance - Python Backend Developer | Mar 2025 - May 2025
• Delivered backend components and ETL/ELT data pipelines across 5+ projects, covering data processing, transformation, and
persistence workflows.
• Designed relational schemas and SQLAlchemy data-access layers, and wrote optimized SQL queries for reliable database operations.
• Collaborated in Git-based backend workflows with a focus on maintainable code, debugging, and dependable data processing.
PERSONAL PROJECTS
Real-Time Chess Platform
Built a real-time backend with Python, FastAPI, PostgreSQL, SQLAlchemy, Redis, WebSockets, JWT authentication, ELO-based
matchmaking, background async tasks, and Dockerized services.
Technologies: Python, FastAPI, PostgreSQL, SQLAlchemy, Redis, WebSockets, JWT, asyncio, Pydantic, Docker
Marketspell Marketplace
Developed a Django REST Framework marketplace backend with REST APIs, JWT authentication, PostgreSQL and MongoDB
persistence, Stripe integration, Docker, and CI/CD with GitHub Actions.
Technologies: Python, Django, Django REST Framework, PostgreSQL, MongoDB, JWT, Stripe API, Docker, GitHub Actions, CI/CD
EDUCATION
Bachelor of Science, Computer Science Sep 2025 - Present
Lviv Polytechnic National University
Curriculum: Computational Intelligence of Smart Systems
LANGUAGES
Ukrainian - Native English - B2 (Upper-Intermediate)