Mariia Br.

About me

Zapraszam do współpracy! Wystawiam faktury przez Useme.

Full-Stack Engineer · AI Integration · Privacy-First Architecture

Need an LLM wired into your product, a browser extension that actually ships, or a real-time streaming backend? That's my daily work.

What I build:

• AI apps — LLM proxies, Gemini/Claude/OpenAI integrations, RAG pipelines, Telegram bots with persistent context

• React SPAs — offline-first, i18n-ready (EN/RU/UK/PL), GitHub Actions CI from day one

• Browser tooling — Chrome Extensions (MV3), Tampermonkey scripts, fetch interception, sandboxed iframe execution

• Backend — Node.js/Express, Next.js, Nest.js, REST APIs, SSE streaming, OpenAI-compatible endpoints

Recent: built an OpenAI-compatible proxy routing to Google Gemma with live telemetry dashboard; shipped a Chrome extension with an active open-source user base.

Stack: React · TypeScript · Node.js · Next.js · Nest.js · Python · Supabase · Tailwind

Warsaw, PL · github.com/itsfantomas