Worked on canonical/ubuntu.com and canonical/test_observer, delivering backend features focused on security and user management. Developed a secure Markdown rendering workflow for certification notes, integrating a markdown-to-HTML helper and template filter with proper escaping in HTML and Python, while expanding test coverage and improving code maintainability through linting and code cleanup. In canonical/test_observer, implemented automated administrative privilege elevation via the Juju Charm interface, adding a new action in YAML and Python, with robust test coverage for promotion logic and edge cases. Demonstrated attention to code quality, security, and maintainability, leveraging skills in backend development, templating, and database operations.