Ahoj 👋
Hi there! My name is Vít Rozsíval[1]. I come from the Czech Republic 🇨🇿. I'm a Senior Full-stack Developer & AI Engineer at ApiTree. I've been building web and mobile apps for more than 15 years, focusing on clean architecture and sustainable solutions.
These days I mostly build AI agents – for clients and for us internally – and help people use AI sensibly: no hype, with one eye on the economics and the other on long-term sustainability. Still a programmer by profession and by heart.
[1] IPA: [viːt rosiːval]
- 🧑💻 Running my own agentic dev team – analyst, devs, team lead, reviewer, tester & DevOps agents that agree on a plan before they touch the code
- 🖥️ Squeezing tokens out of a home-built inference rig – and benchmarking it until it proved that more hardware wouldn't help 😅
🔩 The rig
| GPU | 2× Radeon AI PRO R9700 (ROCm) |
| CPU | Ryzen 9, 12 cores |
| RAM | 192 GB DDR5 |
| Stack | Ubuntu, Docker, llama.cpp |
| Serves | A family of Qwen models – MoE & dense, MTP drafting, up to 256K context – plus embeddings & small helpers |
- 🤖 Agents write the code, I make the decisions
- 👀 Every PR gets reviewed – by a human, or at least by two models that don't like each other
- 🚦 Agents may deploy to dev; production always has a human in the loop
- 🏠 Local models where they're good enough, frontier models where they pay off
- 📏 Measure first, buy later
- 🔐 No keys on disk
♥️ TypeScript, React & Node.js – still and forever- 🧩 My harness: OMP, Herdr & Moshi
- 🧠 Claude in the cloud, llama.cpp at home
- ⚙️ DevOps & cloud architecture, Docker, GitHub Actions
- 🏋️ CrossFit Los Podolos
- 🤿 OWD
- 🐶 Dog lover
- 🕹️ '90s kid
- 👨🍳 House Chef
- 🌱 Into self-sufficiency
- 📫 Contacts on my website