One engineer. An army of AI agents.
Security-first engineering, agents embedded in how you actually work.
- Last shipped
- OrchestKit v10.0.0-beta.171
- Working in
- Next.js 16 · LangGraph · RAG
- Next opening
- November 2026
Services
What I Do
AI consulting, development, and full-stack engineering
Build
AI Development
Build production-ready AI features for your application. From conversational chatbots to multi-agent systems and RAG implementations.
Full-Stack Development
Modern web applications built with React, Next.js, and Python backends. From MVP to production, with clean architecture and CI/CD.
Infrastructure & DevOps
Production infrastructure that ships itself: every change is tested and deployed automatically, with no manual steps.
AI Agent Development
Custom AI agents and tooling for Claude Code and other platforms. MCP servers, OrchestKit skills, prompt engineering, and workflow automation.
Advise & Coach
AI Consulting
Get expert guidance on integrating AI into your product. I help you identify opportunities, design the right architecture, and create an implementation roadmap.
AI Integration Audit
Comprehensive assessment of your current development workflow and business processes to identify high-impact AI integration opportunities. Delivered as a prioritized roadmap.
AI Development Coaching
Hands-on coaching to level up your AI development, Claude Code, Cursor, MCP servers, prompt engineering, and shipping production AI features. Tailored to where you are; we shape the format together on a quick intro call.
Team Workshops
Bring your team up to speed on AI-powered development, live demos, hands-on labs on your codebase, and real workflow integration. Format and depth scoped to your team on an intro call.
In their words.
The seat in the middle is waiting for you.
Work
Selected Work
Production systems I designed, built, and shipped. From AI platforms to open-source tools
AI Operations Platform
Production · WhatsApp AI live · operated solo since 2025
Watch in theaterTrading AI Analyst
Live · <50ms anomaly alerts · TASE/NYSE arbitrage
Watch in theaterOrchestKit
Open Source · GitHub-starred · 110 skills, 36 agents, 4 Claude Code mods
Watch in theaterThe toolkit · open source
Powered by OrchestKit, my public engineering brain.
Courses
Courses on running the AI team
Lesson 1 is free. Leave your email and get it the moment it's ready.
A companion pack for lesson 1 is coming next.
Meet the AI team behind the coursesQuestions
Frequently asked
Short, quotable answers about what Yonatan builds, what it costs, and how agents can call this site.
What does Yonatan Gross do?
Yonatan is an AI Platform Engineer & Backend Developer who designs and operates production AI systems solo - RAG pipelines, multi-agent architectures, MCP servers, and the infrastructure that runs them. He built a WhatsApp AI platform and created OrchestKit, an open-source Claude Code agent framework (110 skills, 36 agents, 162 hooks).
How can I reach Yonatan?
Book a free 15-minute intro call at cal.com/yonyon/15min, or email [email protected].
Can an AI agent use the chat API on this site?
Yes. Full developer & API docs cover authentication, endpoints, and examples. POST /api/chat with JSON body
{"messages":[{"role":"user","content":"..."}]} (up to 20 messages, each up to 2000 chars). Public, no auth, rate-limited to 10 requests per IP per minute, backed by the claude-haiku-4-5 model, streaming a text/plain response. See also /llms.txt and the agent-skills index.How much does it cost to work with Yonatan, and how do I get a quote?
Engagements are scoped per project, so there is no fixed price list - quotes depend on what you are building. The fastest path to a quote is to book a free 15-minute intro call at cal.com/yonyon/15min, describe the work, and get a scoped proposal. You can also email [email protected]. See /pricing.md.
Why choose Yonatan over an agency or a freelance marketplace?
You work directly with the engineer who designs, builds, and operates the system - no account managers, no hand-offs, no junior bench. Yonatan ships production AI end-to-end (RAG, multi-agent, MCP servers, and the infrastructure they run on) as a single accountable point of contact, and has done so in production (a WhatsApp AI platform) and in the open (OrchestKit). For teams that want senior, hands-on ownership rather than a staffing layer, that directness is the difference.