Worked on the Memori repository to enhance test infrastructure by refactoring mock session fixtures to align with SQLAlchemy’s Session specification. This approach improved the fidelity and maintainability of the test suite, ensuring that mock objects accurately reflected the expected interface. Addressed code review feedback and resolved linting issues, resulting in cleaner and more reliable code. Focused on Python and SQLAlchemy, with an emphasis on robust testing practices, the work contributed to greater CI stability and reduced flaky tests. Collaborated cross-functionally to co-author improvements, supporting a faster feedback loop and enabling more stable and efficient release cycles for the project.