Liam Hartery developed support for the Primes trace format within the google/perfetto trace processor, enabling Google internal tracing data to be parsed, analyzed, and debugged using Perfetto’s infrastructure. He designed and implemented C++ parsing logic and new data structures to handle the Primes format, ensuring compatibility with existing trace processor architecture. His work leveraged protobuf for data serialization and focused on performance analysis and trace processing. By collaborating with internal Google teams, Liam integrated the new format seamlessly, laying the groundwork for future internal format support and improving trace visibility and performance debugging across multiple internal tools and pipelines.