A harness built from zero
Memory, storage and a knowledge base; browser use and remote access to computers; the Skills standard and the MCP protocol — everything an agent needs to do real work.
Founding Engineer · Product Engineer · AI agents
Mateusz
Kołodziejczyk
I build AI products — from the first idea to production.
01/07Hi, I’m Mateusz.
I’m a founding and product engineer who can own a product end to end — the idea and the UX, the agent systems, the full-stack code, and the cloud and security it runs on.
For over four years I’ve been the Founding Engineer at EA Global AI. I built its platform from scratch and own its technology.
- 5 years
- of commercial experience
- ISO 27001
- 100% of the tech work led by me
- Enterprise
- My platform runs at Metlen, Solactive, Çalık Enerji & CapMan
02/07My first product? I built it at 12.
I taught myself to code at 8. At 12 I shipped Quizzy — a social platform for quizzes that I wrote on my own in PHP, long before AI coding assistants: a database, quiz creation, chat, posts, likes and comments. People actually used it, and I got hooked on building.
03/07I built EA’s platform, end to end.
EA is an AI executive assistant for companies. I built the platform behind it from scratch — the agent harness, Autofill, connectors, the full-stack product and the production cloud — and I shape what we build next.
In production at
- Metlen
- Solactive
- Çalık Enerji
- CapMan
Inside the build
Connected to everything
Connectors to the tools companies live in, including 3,000+ apps through Pipedream, with retrieval that grounds answers in sources.
Product, not just code
I shape the product from customer feedback: decide what to build and turn it into working software — interface, architecture and implementation, all the way through.
Clients and cloud
Around the platform I shipped a Chrome extension, a Rust + Tauri desktop app and a native Swift app; it runs on AWS, Google Cloud, Azure, Cloudflare and RunPod, with Terraform and CI/CD on Blacksmith.
EthicsGrade became EA Global AI after a major pivot. I joined in April 2022 as a Software Developer and have been the Founding Engineer since July 2022.
04/07An agent is more than a prompt.
It becomes a product when it has the right context, the right tools and a clear path to a result. At EA I built that environment — the harness around the model — from scratch.
My footprint on the product
- 10,381
- commits since August 2025
- 9.97M
- lines of code changed
- 7,984
- GitHub contributions in the last year
- Agent harness
- 3,000+ app connectors
- Web platform
- Chrome extension
- Rust + Tauri desktop app
- Native Swift app
- Cloud & CI/CD
×113Since February 2026 I build with AI agents too: ~8.6K → ~975K lines a month (×113).
05/07And when I close the laptop, I run.
Running is my reset button. Sometimes around Wrocław, sometimes along a coast I’ve never seen before.
3,709.9kmlogged on Strava
392runs
5countries with runs
2,690.7 km in 2026 alone — as of September 22.
06/07Curious about everywhere.
Early mornings by the sea, unfamiliar routes, new food and new people. 22 countries and territories so far. Pick a place and I’ll take you back there:
07 · Next chapter
Let’s build what’s next.
I’m open to new roles, ambitious AI products and conversations about working together. Email is the fastest way to reach me.