Worked on the skypilot-org/skypilot repository to enhance backend reliability by addressing error handling in instance filtering logic. Focused on improving the robustness of head instance identification, the developer modified the _get_head_instance_id function to safely access the 'name' attribute using Python’s dict.get() method. This change prevents KeyError exceptions when instance metadata is incomplete, supporting more resilient and scalable orchestration workflows. The work centered on backend development and error handling, with a targeted bug fix that aligns with resilient design principles. No new features were added during this period, but the update improved the reliability of automated infrastructure processes.