During September 2025, Felix Kiechle focused on backend development and database management for the evcc-io/evcc repository, addressing a critical issue with 15-minute profile aggregations. He implemented a timezone-aware fix using Go and SQL, ensuring that time-based data grouping and ordering accurately reflected each user's local time zone. This adjustment improved the reliability and accuracy of analytics dashboards for users across multiple time zones, reducing discrepancies in reported data. Felix co-authored the solution, emphasizing code quality and robust implementation. His work demonstrated careful attention to data correctness and collaborative problem-solving, delivering a targeted bug fix with minimal user disruption.