During September 2025, Mikko Virkkunen focused on backend development and database management for the TampereHacklab/mulysa repository. He addressed a critical issue in the database initialization and migration process by implementing a robust startup sequence in Python, ensuring the database was fully prepared before any access occurred. This approach eliminated startup and migration errors that previously caused deployment downtime, particularly in fresh environments. Mikko’s work improved reliability and reduced incident risk by validating the fix end-to-end. His contributions demonstrated depth in reliability engineering and risk mitigation, resulting in smoother onboarding and more resilient deployments across diverse environments for the project.