Worked on the island-is/island.is repository to enhance the reliability and flexibility of the Authentication API. Focused on backend development using JavaScript and TypeScript, the work involved improving database migration robustness by ensuring migration scripts commit transactions, which helps maintain data integrity during deployments. Introduced issuer URL configurability through environment variables, enabling seamless multi-environment support for staging, QA, and production. These changes reduced migration risks and improved deployment safety by hardening both migration steps and configuration management. The approach demonstrated a strong understanding of API development and database migrations, with clear traceability to targeted improvements in the authentication migration path.