Worked on the twentyhq/twenty repository to enhance the reliability and search capabilities of the FindRecords tool, focusing on backend development with TypeScript. Addressed a critical bug by refining input validation, ensuring that only valid filter keys are processed, which reduced runtime errors and unnecessary retries. Improved the filtering of rich-text and relation fields by exposing relevant sub-fields and correctly routing operators, enabling effective content search. Expanded unit test coverage using Zod schema validation to catch regressions early and documented best practices for ongoing quality. Demonstrated skills in API development, composite-filter design, and collaborative code review throughout the process.