During September 2025, Pezza focused on improving the reliability of background job processing in the Shopify/rails repository. They addressed a bug in ActiveJob deserialization, ensuring that timestamp fields such as enqueued_at and scheduled_at were correctly interpreted as Time objects when ActiveSupport.parse_json_times was enabled. By refining the deserialization logic in Ruby on Rails, Pezza prevented these fields from being set to nil, which eliminated nil-time artifacts and improved job scheduling accuracy. Their backend development work, implemented in Ruby, enhanced data integrity within the job processing pipeline. The depth of the fix demonstrated careful attention to correctness and maintainability.