Wiktor Stepniewski contributed to the IO2024FTIMS/SKPH repository by focusing on maintenance and foundational improvements during a one-month period. He addressed a bug in the inc function by updating test expectations to match the refactored implementation, ensuring test reliability and reducing false negatives in continuous integration. Wiktor also established initial project documentation, including a README.md with onboarding guidelines, to support future contributors. His work involved backend development using Python, Flask, and SQLAlchemy, with an emphasis on unit testing and codebase hygiene. The depth of his contributions lay in aligning tests and documentation with evolving project structure for long-term maintainability.