The systems that shaped how I work.
Most of it is internal or client-owned, so the code isn't public. I describe the responsibility, the stack and the kind of problems I actually handled — not screenshots of code I can't show.
The timeline shows how the responsibility moved from complete feature delivery to full-stack ownership and then to production integration and release ownership.
Enterprise application for CETIN operations. I worked on Java/ZK screens, controller-service-DAO flows, imports, Excel processing and production defects.
Full-stack project around measuring, archives, exports and operational workflows. This phase pushed me from feature delivery into owning behavior across backend, frontend and database boundaries.
My main long-term focus: backend and integration work on a modern TSM platform. I work close to production behavior, releases, B2B communication, process rules and data compatibility.
Ongoing on-demand collaboration on a Django-based web system. The volume is low these days, but the engagement is open — I jump in when there is a focused change to make. The value here is being able to enter a different stack and make precise changes without forcing familiar patterns onto it.
Small personal projects are where I keep the full product lifecycle visible: idea, implementation, deployment, maintenance and feedback. This website is one of them.