Tatiana Gavrilova developed type-conversion support for file template format strings in the lsst/daf_butler repository, enhancing automation and reliability in data workflows. She implemented parsing and application of conversion specifiers within the FileTemplate component, allowing dynamic conversion such as integer-to-string formatting directly in file naming templates. This backend development work, carried out in Python, included comprehensive unit tests to verify correctness and prevent regressions. By reducing the need for manual post-processing and improving metadata extraction, Tatiana’s contribution streamlined template-based file generation. The work demonstrated depth in data management and file templating, with a focus on maintainability and test-driven development.