10+ years of engineering experience building high-scale, mission-critical web platforms.
• Former Platform Owner handling 15B+ monthly impressions & 900M+ users globally with near-zero downtime.
• In 2026, I build exclusively AI-native. My entire development lifecycle is orchestrated through multi-agent systems (Claude Code, OpenAI Codex, and Google Antigravity) — combining 10x shipping velocity with rigorous software architecture.

I don't use AI as a passive autocomplete. I architect and operate autonomous multi-agent harnesses:

• The Core Triumvirate: Developing 100% of my code alongside Claude Code (deep terminal & refactoring agent), Google Antigravity (autonomous agentic workflows), and OpenAI Codex.
• Model Context Protocol (MCP): Bridging agents directly to live databases, telemetry, and custom local tools for deep contextual reasoning.
• Deterministic Quality Gates: Hallucination-proof engineering. Every agent iteration passes through automated test runners (Playwright, Vitest), schema-drift checks, and linter loops (Biome) before human merge.

Frontend Craft        :: React 19 • Next.js 16 • React Router v7 • Vite • Tailwind CSS v4 • shadcn/ui
Backend & Serverless  :: Cloudflare Workers (Hono) • PostgreSQL (Neon) • Drizzle ORM • tRPC • Zod
AI & Media Automation :: Claude Code • Google Antigravity • Codex • MCP • Remotion • ElevenLabs
Testing & Resilience  :: Playwright • Vitest • MSW • Ephemeral CI Containers • Automated Rollbacks

• SJOK App (Private) — Internal multi-target platform powering school operations.
  • Architecture: Electron Desktop App • Vite Web App • Cloudflare Workers (Hono API) • Neon PostgreSQL • Drizzle ORM • pnpm monorepo.
  • Resilience: CI/CD with ephemeral Postgres 18 service containers for live migration tests, schema-drift guards, TruffleHog audits, and automated production rollbacks.
• Programmatic Media Pipeline (Private) — High-throughput voice & video generation engine.
  • Stack: Remotion (@remotion/captions) • AssemblyAI (word-level timestamps) • ElevenLabs (streaming multilingual TTS).
• Public & Client Websites:
  • sjok.pl — Official website for SJOK English Language School.
  • onphone.pl — Online booking platform for language conversation sessions.
  • gsroka.vercel.app — Personal developer hub & second brain.

• magdev-order-management — High-performance Order Management SPA • React 19 + React Router v7 + Vite • TanStack Query & Table • Tailwind v4 + shadcn/ui • MSW zero-backend mock layer.
• magdev-language-shop — Progressive web store app • React Router v7 + Vite + TypeScript • Zustand • Playwright E2E • Vitest + MSW.
• magdev-chat-app — Real-time AI chat with streaming • Next.js 16 App Router • Vercel AI SDK + Anthropic • Sonner toasts.

• 💼 LinkedIn: linkedin.com/in/grzegorzsroka
• 🌐 Portfolio: gsroka.vercel.app
• ✉️ Direct: gsroka@gmail.com