Backend / Full-stack Developer

I build backend systems, integrations, realtime applications and self-hosted software with a focus on maintainability, reliability and clear architecture.

Backend: Python · FastAPI · Go · Node.js · NestJS
Frontend: React · Next.js · TypeScript · SvelteKit
Data: PostgreSQL · Redis · SQLite
Infrastructure: Docker · Linux · Nginx · Caddy · systemd · CI/CD
Other: REST APIs · WebSockets · Realtime systems · Automation · Integrations

Self-hosted end-to-end encrypted messenger designed around a zero-trust server model.

• Client-side E2EE with ECDH, HKDF and AES-GCM
• Multi-device architecture and per-device key management
• FastAPI + PostgreSQL + Redis
• WebSocket realtime delivery
• Transactional outbox pattern
• React + TypeScript frontend
• Docker-based deployment

FastAPI React PostgreSQL Redis WebSocket E2EE Docker

Realtime synchronized YouTube rooms for Web and Android.

• Shared playback state between users
• Reconnect and state recovery
• Realtime chat and presence
• Web application with Next.js
• Backend with NestJS
• Native Android application with Kotlin + Jetpack Compose
• OpenAPI and AsyncAPI contracts
• Docker, PostgreSQL, Redis and Caddy infrastructure

Next.js NestJS TypeScript Kotlin PostgreSQL Redis Socket.IO

Local application for accurate transcription of long audio and video recordings.

• Whisper large-v3 with NVIDIA GPU acceleration
• GigaAM-v3 RNNT + CTC dual recognition
• Voice activity detection
• Resumable processing with checkpoints
• TXT and SRT export
• Desktop GUI and CLI
• Automated tests and CI

Python Whisper GigaAM CUDA PyTorch CI

Self-hosted web panel for installing and managing TeleMT on Linux servers.

• One-command installation
• Service lifecycle management
• Logs and status monitoring
• Update checking
• Proxy link generation
• Native systemd integration

Go SvelteKit SQLite Linux systemd

• Backend architecture
• Realtime systems
• System integrations
• Business process automation
• Self-hosted applications
• Legacy system modernization
• Infrastructure and deployment
• Security-oriented applications

I prefer building software that solves real operational problems rather than isolated demo projects.