Cologne, North Rhine-Westphalia, Germany
I’m an IT consultant and full-stack developer from Cologne, Germany. I build polished, practical web applications and backend systems for businesses, organizations, and my own products from the first concept to release and long-term operation. My work sits at the intersection of software engineering, UI/UX design, and hands-on IT consulting. I care about systems that not only work reliably, but also feel clean, fast, and well thought-out for the people actually using them. Through Jaro.digital, I help small businesses, local organizations, and private clients with websites, web apps, servers, cloud solutions, digitalization, and everyday IT challenges. My goal is simple: turn messy technical problems into clear, usable solutions. Some of my recent work includes centralized account and SSO systems with OAuth2, business-management platforms with customer, invoice, and inventory features, school software with Untis integration, internal workflow tools, landing pages, and client-facing web applications. I also work on projects under Collection Software, including BetterLuPO, a web-based alternative to the German LuPO course-selection software, and Collection Accounts, a centralized account system for connected applications. My main stack includes TypeScript, SvelteKit, Prisma, MariaDB/MySQL, Bun/Node.js, Kotlin, Docker, Git, and Figma. I’m especially interested in products where solid engineering, clean design, and real-world usefulness meet. I’m always open to interesting web, software, and IT consulting projects, especially when the goal is to build something useful, maintainable, and actually pleasant to use.
Working with Collection, I have created an extensive suite of custom-made, purpose-built and interconnected internal tools that pave the way for our highly connected software suite.