During January 2026, Dimitris Mitropoulos focused on backend reliability improvements for the WordPress/gutenberg repository, specifically addressing signaling server retry behavior. He developed and implemented a Signaling Server Retry Backoff Limiter using PHP, introducing a mechanism that caps the number of retry attempts to prevent unbounded exponential backoff. This solution reduced the risk of retry storms and mitigated potential performance degradation under heavy load, enhancing overall system stability. Dimitris collaborated closely with other contributors to align the fix with ongoing pull requests. His work demonstrated a targeted, in-depth approach to backend problem-solving, leveraging his expertise in PHP and backend development.