Teams at Ringier AG

Develop and implement real-time payment applications using Java, Spring, and Akka. Own engineering deliverables throughout client implementations, write high-quality code using TDD and BDD, resolve complex technical issues, and contribute to design decisions. Collaborate closely with international clients and engineering teams in an Agile/Kanban environment while supporting knowledge transfer, best practices, and continuous improvements.

Design, own, and optimize scalable search and retrieval architecture. Implement vector, keyword, and hybrid search with ranking/reranking, embeddings, indexing, and metadata strategies. Build retrieval evaluation (golden datasets, human evaluation, automated metrics), diagnose data and ranking issues, and balance quality, latency, cost, and complexity.