At Athentics, I designed and built an end-to-end platform for SMK Tanjung as the sole engineer, from architecture through production release. It includes online exams, e-Billing, and a React Native app for parents.
I made the exam engine tamper-resistant by keeping its timer on the server and preventing the answer key from reaching students' devices. I also wrote more than 1,600 automated tests and isolated each school's data.
At Habmann AufstiegsAkademie, I teach web development, C/C++, Java object-oriented programming, and project management to working professionals. I designed the complete teaching materials and hands-on labs for a 16-day web development course.
Across roles at Connexing.ai, Indonesia State-Owned Bank, Appen, and other teams, I've developed mobile products and backend services. My work has included modernizing iOS architectures, improving app performance, and delivering production releases.

