Lasse worked on the ErasmusEgalitarian/educado-mobile repository, focusing on stabilizing certificate workflows and improving code quality through targeted bug fixes and refactoring. He enhanced backend reliability by restructuring certificate generation services, removing circular dependencies, and adding robust input validation and error logging using JavaScript and Node.js. Lasse also contributed to frontend consistency with React Native, addressing UI issues and standardizing date handling. He improved developer experience by modularizing project structure and clarifying documentation, enabling smoother onboarding and scalable growth. His work demonstrated depth in API integration, dependency management, and database coordination, resulting in a more maintainable and resilient codebase.