Alexander Baron

End-to-end responsibility for engineering and infrastructure. The platform automated the cost reimbursement process (§13 Abs. 3 SGB V) for private psychotherapists (applications, documentation, billing) with the dual goal of bringing more publicly insured patients into therapy and opening up GKV billing for therapists. Architecture, implementation, QA, hosting, and operation. Backend in C# / .NET with Event Sourcing, Frontend in React. Built and led a 3-person engineering team as part of Enactus Aachen.

Itestra: Custom software development with a focus on customer project implementation and modernization of legacy codebases. In this role: Vue 3 / TypeScript frontends (component design, Composition API, type-driven state management) and substantial refactoring work on grown Java/Spring backends – version migrations, structural modernization, improvement of maintainability.

Data engineering and ML pipeline work for research projects. Data harmonization of heterogeneous research databases via an internal ontology (Python, later Rust for throughput-critical sections). Preparation and productive integration of ML models from student theses into the ongoing research pipeline. In addition, Linux server maintenance, LVM and storage setup.