During October 2025, Terlaa focused on backend stability and data correctness in the espoon-voltti/evaka repository, specifically addressing inconsistencies in unread message counts for employees. By reverting a previous fix, Terlaa restored the original logic for calculating unread messages, removing test data setup that had introduced unintended side effects. The work involved careful adjustment of SQL queries to ensure that unread counts matched expected behavior across employee dashboards, supporting a consistent user experience. Utilizing Kotlin and SQL, Terlaa demonstrated attention to detail in database query optimization, prioritizing reliability and accuracy in messaging features over the introduction of new functionality.