Vladyslav

Bondar Vladyslav
|Email: [відкрити контакти](див. вище в блоці «контактна інформація») | Phone: [відкрити контакти](див. вище в блоці «контактна інформація») |Telegram: @VladBondar1|

About me

Python backend developer with 2 years of experience, spanning a large product company and custom solutions for small businesses.
Worked on a product handling 300+ RPS. Designed and implemented the architecture of an LMS with cloud storage integration and a
strong focus on security. Looking for a role in Bratislava or fully remote, with no location constraints. Available full-time, including
afternoon/evening hours and US/LATAM time zone overlap. Studying at FIIT STU with a flexible schedule.

Technical Skills
Python, Django, Django rest framework, FastAPI, Asyncio, Pydantic, PostgreSQL, SQLAlchemy, SQL, Alembic, Docker, S3, Redis, Celery,
Websockets, Pytest, Unittests, GIT, kafka, HTTPX

Professional Experience
January 2026 – August 2026
Python backend developer
| Seven Stars School | Ukraine, Kyiv |
Developed and deployed LMS for courses of school subjects.
Stack:
Backend: Python, Django, DRF, PostgreSQL, Redis, Celery, Cloudflare R2, Docker
Frontend: HTML, CSS, Django templates, Javascript (basic)
● Designed and shipped to production the LMS backend with role-based access control and protection against brute-force
attacks, IDOR and XSS.
● Implemented student attendance and performance tracking with report export, reducing the owner's manual work from 10 to
1–2 hours per week.
● Migrated file storage to Cloudflare R2, eliminating egress bandwidth costs.
● Cut site response time from 3.5s to 0.9s by rewriting static pages from WordPress to a custom implementation and setting up
Redis caching for rarely updated pages.
● Set up Docker-based deployment and a CI/CD pipeline that runs the test suite on every push, and covered critical user flows
with tests.
● Built an in-platform chat (WebSockets) for teachers, students and moderators, centralizing communication and removing the
need to exchange personal contacts in third-party messengers.

June 2024 – September 2025
Python backend developer
| Pizza Day | Ukraine, remote |
Worked in a big Ukrainian FoodTech company.
Stack: Python, FastAPI, Pydantic , SQLAlchemy PostgreSQL, Redis, Celery, Kafka , Docker, Grafana
● Reduced admin panel list load time by 40% by optimizing pagination using cursor-based pagination.
● Raised test coverage of the admin service from 72% to 86%, focusing on object-level permission checks.
● Built an endpoint for push notification history, letting users see past notifications after reinstalling the app.
● Introduced logging for telegram bot service.

Other skills
● English B2
● Slovak B1
● Ukrainian Native
● Experience with working in team

Education
Slovak University of Technology in Bratislava Faculty of Informatics and Information Technologies (FIIT STU)