I build APIs, backend services, and the systems that keep products running. FastAPI, PostgreSQL, Docker — clean code, reliable production.
Own startup. Full backend from scratch: REST API for web and mobile, PostgreSQL, Redis caching, Telegram bot for automation. Docker deploy on VPS.
Contract work. NestJS REST API with JWT auth, RBAC, PostgreSQL query optimization and Redis caching. Improved response speed and error handling.
TypeScript application: UI components, Canvas API for image processing, file management system, security testing and patching.