05/13/2026 updated
100 % available
Sr. Software Engineer | Python & Rust | 12+ years experience
Kyiv, Ukraine
Only remote
Computer Science, Specialist Degree (5-year university program)About me
Senior Software Engineer with 12+ years in Python and growing expertise in Rust. Founder of Backendery digital studio. I build scalable APIs, distributed systems, and AI-powered backends. Clean architecture, real-world reliability, zero legacy mess left behind
AI AgentsRAGGitHub ActionsPython (Programming Language)PostgreSQLMongoDBRedisSQLAlchemyRust (Programming Language)Large Language ModelsBackendGitFastAPIApi DesignRestful Api
Languages & Core/ Python (12+ years, production), Rust (systems & high-perf backend), C/C++, JavaScript/TypeScript
Frameworks & Libraries/ FastAPI, Starlette, asyncio/aiohttp, anyio, uvicorn/gunicorn, httpx, Axum, Tokio, Tower, Reqwest, Pydantic, SQLAlchemy, SQLx, Serde, Tracing, gRPC/protobuf
Task Queues & Workers/ Dramatiq, Taskiq, arq
Databases/ PostgreSQL, EdgeDB/Gel, MySQL, MongoDB, Redis, InfluxDB, ElasticSearch
Graph & Vector/ Neo4j, Apache AGE, Qdrant — hybrid search pipelines (vector + graph + relational)
AI & LLM/ LLM integration (Anthropic Claude, OpenAI GPT), Prompt engineering & system prompt design, AI-powered backend APIs (RAG, tool use, structured outputs), Vector search & embeddings
Infrastructure & DevOps/ Docker, Docker Compose, GitHub Actions, Sentry, Serverless (GCP), Digital Ocean, Vercel, Shuttle
Architecture & Design/ REST API design, Microservices, Distributed systems, Hexagonal Architecture, System design, Concurrency/async, SOLID, Design Patterns, Performance optimization, Observability
Queues & Messaging/ NATS, RabbitMQ, Redis Pub/Sub
Integrations & Bots/ Telegram Bot API, Telegram Mini Apps, Payment systems integration, Scraping and crawling bots
Resilience & Reliability Patterns/ Retry, Deadlines, Rate Limiting, Circuit Breaker, Rich Client, Dummy/Pumpkin, Exponential Backoff with Jitter, Health Checking, Failover & Failover Caching, Caching strategies, Reverse proxy patterns (Nginx, Envoy)
Testing/ PyTest, unittest, Rust Test Module
CMS & Frontend (supporting)/ StrapiCMS, PayloadCMS, React.js, Next.js, TailwindCSS, GraphQL
Tools/ Git, Jira, Notion, Swagger/OpenAPI
Soft & Lead/ Team building (up to 6 engineers), technical mentoring, architecture decisions, product trade-off thinking, project delivery end-to-end
Experience
Professional experience10+ years
Freelancer since2023
Languages
EnglishBasic knowledgeRussianNative speakerUkrainianNative speaker
Project history
Responsibilities:
- Software development, refactoring and support of the existing codebase
Achievements:
- Developed a new internal billing system based on product needs;
- Enhancement and support of existing internal projects (Reface Studio and Reface Admin Panel), regular resolving issues related to tech debt.