Flaga Unii Europejskiej Zaloguj się
Flaga Unii Europejskiej
Index finger pointing up icon

Kraj: Ukraine

Lokalizacja: Warszawa, PL

Na Useme od 19 października 2026

O mnie

Python backend developer based in Warsaw. I build asynchronous APIs and event-driven backends with FastAPI, async SQLAlchemy, PostgreSQL, Redis and Docker.

What I can help with:

  • REST APIs and backend services (JWT, OAuth 2.0, Auth0)
  • Integrations and automation (Google Calendar API, third-party APIs, background jobs)
  • Long-running tasks and real-time features (Redis queues, Pub/Sub, WebSockets)
  • MQTT/IoT frameworks and device simulators
  • Database design, migrations and concurrency issues
  • Automated tests (Pytest, Testcontainers)

Experience: core quiz domain of a commercial quiz platform MVP, plus contract projects under NDA: an event-driven pipeline for long LLM inference and an MQTT framework used by a client's team as a load generator.

I work to a clearly defined scope, deliver tested code, and keep you updated along the way. Communication in English or Ukrainian.

Kategorie

Programowanie i IT > Oprogramowanie

Umiejętności

API Django Docker LLM MQTT Postgresql Python Redis REST Sql Web Scraping

CV / Résumé

Mar 2026 - Teraz

Backend Engineer (Contract)

Freelance

Delivered backend MVPs and proofs of concept under NDA: async LLM job pipeline (Redis queues, Pub/Sub, WebSockets), MQTT telemetry framework with device emulators, Testcontainers-based integration tests.

Wrz 2025 - Lut 2026

Backend Developer

Meduzzen

Owned the core quiz domain of a commercial quiz platform MVP, working with a senior engineer: FastAPI, async SQLAlchemy 2.0, PostgreSQL, Redis caching and rate limiting, row locking against duplicate attempts, Pytest.

Sty 2025 - Sie 2025

Backend Developer (Applied Research)

NTU KPI

Built internal automation tools: PostgreSQL schemas with Alembic migrations, two-way Google Calendar API sync via OAuth 2.0, Dockerized services, Pytest integration tests.

Portfolio

Quiz Management API (reference build)

Reference rebuild (no proprietary logic) of the core quiz domain I owned in a team MVP: copy-on-write quiz versioning, row locking against duplicate attempts, Redis caching, Auth0/JWT. FastAPI, async SQLAlchemy 2.0, PostgreSQL, Pytest.

Portfolio item

Quiz Management API (reference build)

Quiz Management API (reference build)

Reference rebuild (no proprietary logic) of the core quiz domain I owned in a team MVP: copy-on-write quiz versioning, row locking against duplicate attempts, Redis caching, Auth0/JWT. FastAPI, async SQLAlchemy 2.0, PostgreSQL, Pytest.

Async LLM Inference Pipeline (PoC)

Event-driven backend for long LLM inference: requests are queued in Redis and return 202 Accepted, results stream back via Pub/Sub and WebSockets. No more HTTP timeouts. Stack: Python, Redis, Pub/Sub, WebSockets.

Portfolio item

Async LLM Inference Pipeline (PoC)

Event-driven backend for long LLM inference: requests are queued in Redis and return 202 Accepted, results stream back via Pub/Sub and WebSockets. No more HTTP timeouts. Stack: Python, Redis, Pub/Sub, WebSockets.
MQTT IoT Framework (open-source core)

Built under NDA as a contract MVP; the public, stripped-down core is on PyPI and GitHub. Extensible Python framework for MQTT IoT systems: reusable base classes for hubs, devices and sensors, class registry, logging. Docker, Pytest.

Portfolio item

MQTT IoT Framework (open-source core)

MQTT IoT Framework (open-source core)

Built under NDA as a contract MVP; the public, stripped-down core is on PyPI and GitHub. Extensible Python framework for MQTT IoT systems: reusable base classes for hubs, devices and sensors, class registry, logging. Docker, Pytest.