Profile
Hi! I'm Markus, a versatile software engineer with a focus on back-end development for web apps, mobile apps, and games.
Within that role, I consider myself a seasoned amateur in many fields. I move slowly and fix things, keep projects maintainable for the long haul, and enjoy taking on responsibility in all phases of the software lifecycle.
Hire Me!
I'm always on the lookout for interesting and meaningful work, and eager to keep learning. If you have a project that I might be able to help you with, please get in touch!
I am currently based in Karlsruhe, Germany, and experienced with working remotely.
Past Projects
Here's a selection of things I have been working on in the past couple of years. Feel free to have a look at my traditional CV for more details about these, and about earlier work.
Designed and implemented the REST API backing a mobile app and webapp, providing realtime chat, appointment scheduling functionality and various types of content material (surveys, exercise modules, audio/video) to clients and their coaches.
Implemented core parts of the administrative webapp with React-Admin.
Also helped out refactoring and extending the React/React Native+Redux based clients.
An interim solo project: Built a simple puzzle game using the libGDX framework, with a deliberately narrow scope, in order to improve client-side skills and exercise an entire app development cycle within a limited amount of time (4 months from idea/prototype to release).
Designed and implemented the horizontally scalable back-end service/REST API that managed player data and provided core game functionality to the Android and iOS clients.
As part of a nimble startup team, I also took care of a significant portion of the infrastructure setup and maintenance work (CI/CD environments, operations monitoring etc), and contributed to game design extensions and new features beyond the initial project scope.
Eleven Giants is a community-driven open source project aiming to bring the previously shut down commercial MMO game Glitch back to life.
I contributed to these efforts as part of a globally distributed team of volunteers, primarily by extending the Node-based game server that provides the persistent realtime game environment, and helped provision and maintain various parts of the infrastructure.
Skills and Capabilities
My primary areas of expertise are Javascript/Node.js and Java, but I have also worked professionally with C#/.NET and Python. Whatever technology I happen to be using, I try to fully understand its core ideas and not go against the grain.
Other notable topics, emphasized roughly corresponding to my proficiency with them: