Worked on the go-vikunja/vikunja repository to address a backend issue affecting task search functionality. Focused on optimizing SQL query construction by removing duplicated conditions from search filters, this work improved both the accuracy and performance of database queries. Using Go and SQL, the developer ensured that only unique filter conditions were included, reducing unnecessary database load and lowering latency for task retrieval. The solution was developed collaboratively, with clear commit documentation and thorough code review. This targeted bug fix enhanced data reliability and maintainability, demonstrating a methodical approach to backend development and a strong understanding of query optimization techniques.