> Markdown version of [/@jacek-milewski](https://www.wearedevelopers.com/@jacek-milewski). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Jacek Milewski Software architect and trainer helping teams untangle API chaos with pragmatic Domain-Driven Design. ## About Jacek Milewski builds large-scale systems and guides teams through messy architectural decisions. Instead of focusing on theory, he stays hands-on, helping engineers navigate API design, system boundaries, and team autonomy. As a mentor and trainer at Bottega IT Minds, he teaches pragmatic Domain-Driven Design for microservices. He focuses on the reality of how APIs naturally evolve in chaos—and how to use DDD as a practical tool for mapping out relationships and boundaries without getting bogged down in theory. ## Past Sessions ### World Congress 2026 Europe - Virtual Stage · June 30, 2026 Online - [How We Waste Time Building APIs — and the Moment DDD Starts to Matter](https://www.wearedevelopers.com/events/world-congress-2026-europe-virtual-stage/sessions/1556-how-we-waste-time) ## Links - [X](https://x.com/jacek_mil) - [LinkedIn](https://www.linkedin.com/in/jacekmilewski) - [GitHub](https://github.com/yacekmm/) - [Blog](https://looksok.wordpress.com/category/my-portfolio/)