
Yaroslav Ciaz
Full Stack Developer Web Apps AI Automation
Skills

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Portfolio
Work experience
Independent Full-Stack and AI Systems Developer
Freelancing Career • Self-employed
Jul 2024 - Jul 2026 • 2 yrs
Designing and building complete software systems independently — from architecture through deployment-ready code — across web platforms, AI agent tooling, and RAG products. Selected work: Built a real-time collaborative developer workspace (Next.js, Yjs, Rust-adjacent execution isolation) combining code editing, native diagrams, and reviewable AI-assisted drafts. Built a microservices-based booking platform with a Telegram bot, payment sagas, calendar sync, and full production observability (Prometheus, Grafana, structured logging). Built a local execution debugger for AI coding agents (Rust core, native macOS/Linux apps) that captures and replays agent actions for inspection. Built a source-grounded AI assistant enforcing strict tenant isolation and citation-backed answers across a Rust/Python microservice stack. Built a security-first MCP server giving AI agents safe, read-only Postgres access via AST-based SQL validation. Each project follows the same standard: clean service boundaries, real automated tests, and honest security/operational models rather than demo-only shortcuts.