Worked on stabilizing transpilation behavior in the Qiskit/qiskit repository by refining the default optimization level handling in the transpile function, ensuring it defaults to level 2 when unspecified and aligns with user configuration or safely falls back as needed. This adjustment improved workflow predictability and reduced ambiguity for users. Additionally, contributed to leanprover-community/leanprover-communityhub.io.git by adding a comprehensive TYPES 2026 conference entry to the events.yaml file, enhancing data completeness and calendar accuracy for event planning. Demonstrated skills in Python, YAML, code refactoring, and configuration management, with a focus on maintainability and user-facing reliability across both projects.