Skip to content
yonyon.ai
עב
Yonatan Gross - AI Platform Engineer & Backend Developer

One engineer. A production AI operation that runs itself.

Autonomous agents, RAG, and the infrastructure they run on. Designed, shipped, and operated end to end by one engineer. The kind that files its own work at 3am.

Last shipped
OrchestKit v9.8.0
Working in
Next.js 16 · LangGraph · pgvector
Next opening
July 2026
Book a free 15-min intro callSee My Work
  • TypeScript
  • Python
  • Next.js
  • React
  • FastAPI
  • LangGraph
  • Claude API
  • OpenAI
  • PostgreSQL
  • pgvector
  • Redis
  • Langfuse
  • Sanity CMS
  • Tailwind CSS
  • Radix UI
  • Storybook
  • SQLAlchemy
  • Pydantic
  • Docker
  • Terraform
  • AWS
  • Playwright
  • Vitest
  • MCP Servers
  • RAG
  • Celery
  • Prometheus
  • VoyageAI
  • Turborepo
  • Zustand

Shipped with

  • HunterTools
  • Drushim
  • Ayala Attia
  • RemoteICU

The toolkit · open source

Powered by OrchestKit, my public engineering brain.

the toolkit, live · energy through every spoke
106skills
36agents
171hooks
Explore OrchestKit
Meet the tribe · six real sub-agents, full story on OrchestKit

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.
LLM-Powered ChatbotsRAG / Semantic SearchMulti-Agent OrchestrationLangGraph WorkflowsAPI IntegrationProduction Deployment
Learn more

Full-Stack Development

Modern web applications built with React, Next.js, and Python backends. From MVP to production, with clean architecture and CI/CD.
React 19 / Next.js 16FastAPI / Node.jsPostgreSQL / RedisDocker & CI/CDVercel DeploymentTypeScript End-to-End
Learn more

Infrastructure & DevOps

Production infrastructure with Terraform IaC, Docker deployments, and automated CI/CD. From VPS setup to Cloudflare Tunnels and GitHub Actions.
Terraform IaCDocker DeploymentsCloudflare TunnelsVPS SetupCI/CD PipelinesGitHub Actions
Learn more

AI Agent Development

Custom AI agents and tooling for Claude Code and other platforms. MCP servers, OrchestKit skills, prompt engineering, and workflow automation.
Custom MCP ServersOrchestKit Skills/AgentsClaude Code ToolingAgent FrameworksPrompt EngineeringWorkflow Automation
Learn more

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 Readiness AssessmentArchitecture DesignLLM Selection & EvaluationRAG Pipeline StrategyMulti-Agent DesignImplementation Roadmap
Learn more

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.
Discovery session with your teamWorkflow and toolchain analysisAI opportunity identification and scoringPrioritized implementation roadmapEffort sizing per opportunityPresentation of findings
Learn more

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.
Claude Code & Cursor workflowsMCP servers & toolingPrompt engineeringRAG & multi-agent patternsShipping AI features to productionSupport between sessions
Learn more

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.
Live demos & hands-on labsTool setup for every participantExercises on your codebaseTeam workflow integrationCustom AI agent designPost-workshop implementation guide
Learn more

Why solo

Why hire one engineer instead of an agency?

Solo senior engineer vs agency vs marketplace, on the axes that decide outcomes.

Code authorship

The person you talk to writes the code

Accountability

One name, end to end

Iteration speed

Decision to deploy in hours, not sprints

See the full comparison

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 theater

The Lab

Working artifacts, published live

Interactive dashboards and decision boards my AI tooling generates during real work. Not demos: the numbers, issues, and decisions in them are real.

10
Playgrounds published
37
Issues auto-filed in one week
25
Breaking changes flagged
Open The Lab

What Clients Say

Feedback from people I've worked with

“Healthcare software has zero room for sloppiness. Yonatan's testing discipline and clear documentation gave us confidence at every step.”
NirTelehealth, RemoteICU
01 / 04

Capability × Leverage

Where each capability shipped

A platform engineer's stack compounds. Each capability is a reusable building block. Many are @yonatan-hq/* core packages I wrote once and shipped across every engagement.

Motion showcase · building in public

The reels that started it.

Real Claude Code sessions, real releases, the making-of rail. They play when you reach them, pause when you leave.

cc-reel · the AirPods rescuereal Claude Code session, 1 of the curated cuts
the tribe · Fable launchSuno rap · Higgsfield · every animal = a real sub-agent

More curated cuts on the version timeline below · tap for sound, expand for theater

Explore the full version timelines

Meet George.

The Yonyon identity is drawn from this guy - my husky-mix, the real-life inspiration behind the brand. One amber eye, one ice-blue: the two accent colors this whole site runs on. He supervises every deploy from the couch.

heterochromia, now a design system

George · Chief Morale Officer

Building in Public

Latest Posts

Deep-dives into AI agent architectures, RAG optimization, and lessons from shipping production AI systems

New posts as they ship
Cover: glowing interface components pulled from a registry wall into an assembled layoutMCP

Skip the reels, wire the registry

Everyone has seen the AI demos. The leverage is duller: an agent pointed at the 21st.dev registry returns components already finished.

View on LinkedIn
Cover — AI visuals with characterAI Visuals

From generic AI infographics to visuals with character

Claude Code builds the deck, Higgsfield and GPT Image 2 give it a face, and LEGO, Loki and Star Wars supply the character. No NotebookLM required.

View on LinkedIn
Cover — the real tax of a loaded sprintDev Workflow

The real tax of a loaded sprint isn't the code

It's context-switching, not the code. Why juggling parallel work drains the most, and the AI assistant I built to cut it.

View on LinkedIn
Cover — Fable first impressionsAI Models

Fable: first impressions

A shiny new model back from the dead. Burning the weekly limit on day one.

View on LinkedIn
Cover — MCP elicitation explorerMCP

MCP Elicitation Explorer

Interactive playground for Claude Code MCP elicitation patterns

Try PlaygroundView on LinkedIn
Cover — AI agent architectureAI Agents

AI Agent Architecture

Deep-dive into multi-agent system design patterns

Try PlaygroundView on LinkedIn
Cover — automated content pipelineAutomation

Automated Content Pipeline

From a LinkedIn post to a live page, hands-free.

View on LinkedIn
Cover — Claude Code usersClaude Code

Claude Code Users

Notes from building with Claude Code daily.

View on LinkedIn
Cover — AI in your organizationAI Adoption

AI in Your Organization

Bringing AI into how a team actually works.

View on LinkedIn
Cover — Karpathy thread, contemplative thinkerBuild in Public

Andrej Karpathy's Thread

Reflections on Andrej Karpathy's thread.

View on LinkedIn
Cover — Claude Code deep diveClaude Code

Claude Code Deep Dive

Going deep on how Claude Code really works.

View on LinkedIn
Follow on LinkedIn

The stack · used daily

Tools I actually run my business on

Every tool here runs this site or the platform behind it, right now. Open a tool to see exactly how I use it. Some links are referral links, your price never changes.

Tap any tool to open its dossier

Building with AI · WhatsApp

Building with AI

My WhatsApp community: a room for builders, a room for OrchestKit users, and a room for the people bringing AI into their business. Pick yours.

WhatsApp communities · free, no spam

Pinned · The Weekly

Yonyon.AI

One broadcast a week: what got built, what broke, and what's worth your time.

09:00

About

About Me

Yonatan Gross - AI Platform Engineer & Backend Developer

I build AI that runs itself, then keep it running. One engineer, production-grade: autonomous agents, RAG, custom MCP servers, and the Terraform-managed infrastructure they run on. Solo since 2025, after years building high-scale financial systems.

The proof is my own platform: a smart WhatsApp assistant, a commerce system, content management, and custom MCP servers, all shipped and operated end to end on managed cloud. Like the ops bot that files its own to-do list at 3am.

I also created OrchestKit, an open-source toolkit for working effectively with Claude Code, and I help businesses fold the same autonomous AI into their own workflows.

Core Technologies

PythonFastAPIClaude Agent SDKMCP ServersRAG / pgvectorTerraformDockerTypeScriptReact 19Next.js 16CeleryLangGraph

AI Engineering Insights

Insights on building production AI systems. From multi-agent orchestration to practical deployment patterns.

Multi-agent system patterns
Production RAG architectures
AI development workflows

Double opt-in, one-click unsubscribe. Details in the privacy policy

Join the newsletter for free. Unsubscribe anytime. Read past issues on Substack

Questions

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 (106 skills, 36 agents, 171 hooks).

How can I reach Yonatan?

Book a free 15-minute intro call at cal.com/yonyon, 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, 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.

Contact

Let's Work Together

Book a free 15-minute call or send me a message.

Every channel I publish on.

Or chat with my AI assistant using the button in the bottom right corner.