About

I'm a Web developer based in Poland. I like following new tech and seeing how it changes the way people build, work, and use the web every day.

On this website, I frequently share my insights and perspectives on web, AI agents, and sometimes blockchain tooling.

I've been building web apps professionally for more than 15 years, across many different companies, teams, and products. My main stack is JavaScript/TypeScript, with frontend development and Node.js backends. Lately, I also work a lot with AI coding tools and AI-agent workflows: building small agents, connecting them with existing products, and making them useful in real developer work. For example, in potion-kit, I explore how agents can help with building UI components. I have also built several mobile apps using React Native. I've worked with GraphQL, cloud services, Docker, CI/CD, and the usual DevOps basics needed to keep projects running. I also have a basic grasp of Rust and Python programming languages.

I also like building developer tools and practical examples around the things I learn. A lot of my public work is in that area: static site tooling, JavaScript SDK experiments, MultiversX utilities, small CLIs, and now AI-agent workflows. I usually learn by building something real, then writing down the parts that could save someone else time.

Follow me on x.com and GitHub. I will probably also publish some videos on Youtube from time to time. Let me know if you need anything. You can contact me through e-mail: julian.cwirko@gmail.com.

Check out some of my pet projects: UIPotion.com, HaroldJS.com, Buildo.dev, Elven.Family. You can also read my older articles.