Designed and built a platform for procurement data management — three web applications with third-party integrations, scalable architecture on Google Cloud.

Full-stack booking system for bowling lanes. MVP in 3 months, production in 6. Integrated Stripe, Heartland Payment, MailChimp, and 10+ third-party services.

Developed for an autonomous vehicle company as part of the original engineering team. Enterprise-scale Node.js and React application.

Built real-time communication platform with React/Redux frontend and Node.js/Express/Socket.IO backend on AWS with Lambda functions.

Full-stack MERN application for an insurance technology startup. Containerized deployment on Azure with Docker.

Built multiple microservices for an AI-powered sales assistant platform using the MEAN stack and Go.

Refactored AngularJS application, built a flow diagram editor using jsPlumb, developed mobile app, added E2E and unit test suites.

Push-to-talk dictation for macOS that runs on-device — whisper.cpp on Metal, text typed into any field. brew install mikhail-angelov/tap/vadic

Voice conversations with a coding agent in the terminal: wake word, local speech recognition and synthesis, English and Russian. uv tool install beseda

LLM chat that builds simple 3D-printable CAD models. Source.

Merged PRs to dundee/gdu (treemap web UI), gdu (delete / reveal actions) and tarwin/tinyjsapp (windowless tray agents on macOS).

Offline-first Android navigation app with custom map tiles (mbtiles), GPX tracking, and placemark management. Self-hosted alternative to Google Maps.

Lightweight Docker/host monitoring service with label-based service discovery, multi-channel alerting (Telegram, email, Mailgun), and daily digest summaries.

AI agent that converts text prompts into Excalidraw diagrams. Uses any OpenAI-compatible LLM via a simple REST loop. Published on dev.to.

Zero-downtime rolling deployment scripts for Docker Compose — blue-green style updates without service interruption.

AI-powered badge and emblem layout editor. Manual canvas tools plus AI planning mode powered by Deepseek. All data stored client-side in IndexedDB.

Zero-config reverse proxy for Docker containers with automatic Let's Encrypt TLS — polls Docker socket, auto-discovers routes, provisions certificates.

Browser-based code sandbox with real-time collaboration and offline storage. Built to showcase AI-assisted development workflow.

Lightweight HTTP tile server for offline OSM maps — serves mbtiles (SQLite) files for any custom mapping application.

Toptal Engineering Blog — Practical testing patterns using mongo-unit for fast MongoDB integration tests.

Toptal Engineering Blog — Building a Gulp-compatible task runner with Node.js streams.

dev.to — How excalidraw-agent works: an agent loop in 100 lines of TypeScript.

Habr (Russian) — A tiny React-like virtual DOM in under 100 lines. 24K readers.

Habr (Russian) — WebGL from scratch: 3D scenes, textures and interaction in the browser. 21K readers.

Habr (Russian) — Extending VLC with stereo 3D rendering: OpenGL, shaders, cross-platform build. 42K readers.