Vladi Mijatovic
Senior AI engineer who ships production AI agents end to end, from the LLM toolchain down to billing and uptime. I build the AI toolchain, not just use it.
The stack I build on
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Claude Code skills and commands
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Projects shipped
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Apps and sites live
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Custom MCP servers
Selected work
Production AI systems, shipped
Agentic platforms and tooling first, then voice, then the apps that run on top. All live, all built solo.
Custom AI Agent Toolchain
❯ Claude Code · Codex · MCP
100+ reusable Claude Code and Codex CLI skills and custom slash commands, plus multiple Model Context Protocol servers on the official SDK. Includes a Dockerized read-only connector secured with OAuth2 PKCE and JWT, and lifecycle hooks for secret-leak prevention, sacred-path edit guards, and git safety.
Multi-Tenant Agentic Bot Fleet
❯ Self-Hosted · 24/7
A production agentic LLM platform of roughly 1,300 source and 570 test files, with a tool-calling agent loop, parallel sub-agent orchestration, per-tenant isolated state, cost-aware multi-model routing with circuit breakers, prompt caching, and RAG over an encrypted per-tenant knowledge graph. One isolated VPS per tenant with tiered watchdogs and synthetic liveness probes.
Production AI Voice Phone Agent
❯ Live · 24/7
A conversational AI receptionist live on a real carrier phone number, handling inbound calls with LLM-driven booking, lead capture, and human escalation. Built in two languages, plus a from-scratch streaming voice agent over a WebSocket media relay with token streaming and mid-utterance barge-in, a daily-spend kill switch, and a multi-tenant call-analytics pipeline with idempotent webhook upserts.
Multi-Tenant Consumer AI App
❯ iOS and Android · Live
Live on the App Store and Google Play with an AI chat assistant, structured AI report generation across multiple product types, automatic PDF export, multi-language content, three subscription tiers, and a Supabase backend hardened with row-level security.
30+ projects shipped end to end.Ask about the rest
Capabilities
What I build, end to end
From the agent loop and the model routing down to the billing, security, and uptime. One engineer, the whole stack.
Agentic LLM Systems
Tool-calling agent loops, parallel sub-agent orchestration, per-tenant isolated state, and RAG over encrypted knowledge graphs.
Claude Code and Codex Tooling
A library of 100+ reusable skills, slash commands, lifecycle hooks, and custom subagents, with cross-model adversarial code review before every ship.
Custom MCP Servers
Model Context Protocol servers on the official SDK, including a Dockerized read-only connector secured with OAuth2 PKCE and JWT.
AI Voice Agents
Production conversational phone agents with neural TTS, low-latency speech to text, and live tool calling for booking, lead capture, and warm transfer.
Full-Stack TypeScript
Next.js and React apps on Supabase and Postgres with row-level security, edge functions, realtime, idempotent webhooks, and rate limiting.
Payments and Monetization
Stripe checkout and subscriptions, RevenueCat, native in-app purchases, server-side receipt verification, and idempotent entitlement webhooks.
Shipped, not slides
Apps and systems in production
About
From concert halls to production AI
I build the AI toolchain, not just use it. My work is production agentic systems: multi-tenant LLM platforms, a library of 100+ Claude Code and Codex skills and slash commands, custom MCP servers on the official SDK, and conversational voice agents that take real phone calls.
I ship end to end. That means the agent loop and the cost-aware model routing, but also the billing, the row-level security, the webhooks, the uptime watchdogs, and the App Store compliance. One person, the whole stack, in production.
Before software, I spent a career in music. Award-winning jazz pianist and film composer, full-scholarship Master's and Bachelor's in Jazz Piano and Composition, named Best Jazz Musician in Europe, and performed at Carnegie Hall. I scored the film The Companion, winner of three Los Angeles Film Awards in 2024.
Decades of performing under deadline built the discipline and obsessive attention to detail that now go into every system I ship. I hold US citizenship through the EB-1A visa for extraordinary ability.
Best Jazz Musician in Europe
Award
Carnegie Hall
Performed
EB-1A, US Citizen
Extraordinary ability
3 LA Film Awards, 2024
Scored The Companion
Reviews
What clients say
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Get in touch
Building something with AI agents?
Tell me what you are building. I reply within 24 hours.
Available remote, US hours.