# Ilya Kazantsev

> AI Product & Systems Engineer · full-stack Python + TS. I build AI systems where autonomy has boundaries — model output becomes reviewable action, not silent state mutation.

Markdown mirror of ilyadev.xyz, built for AI agents. Each public page has a Markdown twin at the same path with `.md` (replace with `.ru.md` or `.ar.md` for translations).

## Languages

- [EN (this file)](https://ilyadev.xyz/llms.txt)
- [RU](https://ilyadev.xyz/llms-ru.txt)
- [AR](https://ilyadev.xyz/llms-ar.txt)

## About

- [Home — Ilya Kazantsev](https://ilyadev.xyz/index.md): I build AI systems where autonomy has boundaries — model output becomes reviewable action, not silent state mutation.

## Cases

- [Case 01 — AI CRM · Real Estate (ai-crm)](https://ilyadev.xyz/cases/ai-crm.md): Production AI agent with MCP-style 19-endpoint tool API, audit trail, and operator handoff. Qualifies real-estate leads, runs project research, books viewings.
- [Case 02 — Restaurant Stock AI Agent (ai-warehouse)](https://ilyadev.xyz/cases/ai-warehouse.md): Restaurant stock AI agent with two-tier Gemini routing and draft→Confirm safety boundary. Receipts, prep and write-offs start in Telegram; the WebApp keeps review, WAC and dashboard impact visible.
- [Case 03 — AI Video Editor (ai-video-editor)](https://ilyadev.xyz/cases/ai-video-editor.md): Local AI video editor as an MCP-style substrate — file-level tool API with hash-verified diffs and audit trails. Timeline, scripts and async TTS as code, Gemini as orchestrator.
- [Case 04 — Bullet Reign · Roblox (roblox-game)](https://ilyadev.xyz/cases/roblox-game.md): Bullet-heaven game for Roblox with a custom MegaMesh renderer (300 enemies at ≥55 FPS on mid-range mobile, 500 hard cap) and the full art pipeline running through Blender + MCP agents — solo, no artist.
- [Case 05 — macOS VPN · per-app routing (macos-vpn)](https://ilyadev.xyz/cases/macos-vpn.md): Per-app macOS routing tool with fail-shut pf gate, launchd boot persistence and live traffic monitoring.
- [Case 06 — Portfolio Site (portfolio-site)](https://ilyadev.xyz/cases/portfolio-site.md): The site you're reading. React · Vite · TypeScript with token-first CSS modules, typed EN/RU/AR content, Markdown mirrors, privacy-first telemetry and route-aware navigation.

## Contact

- Email: <mailto:ilya@ilyaDev.xyz>
- Telegram: <https://t.me/ilyaDev_xyz>
- GitHub: <https://github.com/ilyaDev-xyz/portfolio>
- LinkedIn: <https://www.linkedin.com/in/ilyaDev-xyz>

## Resume

- [EN CV (PDF)](https://ilyadev.xyz/private/cv-en.pdf)
- [RU CV (PDF)](https://ilyadev.xyz/private/cv-ru.pdf)
- [AR CV (PDF)](https://ilyadev.xyz/private/cv-ar.pdf)

## Optional

- [Full corpus (single fetch)](https://ilyadev.xyz/llms-full.txt): EN · ~116k chars · ~117 KB

Last updated 2026-05-06.