Edward Kim upgraded the OCR model in the NVIDIA/nv-ingest repository, replacing PaddleOCR with a custom solution to enhance image processing performance and model flexibility. He refactored extraction logic, model interfaces, and configuration schemas, ensuring seamless integration with the new CustomOCR API. The work involved renaming functions, updating method calls, and expanding unit tests to validate the stability of the new backend. Using Python, API development, and image processing skills, Edward reduced external dependencies and improved maintainability. His focused, end-to-end approach established a robust foundation for future OCR enhancements, demonstrating depth in both technical execution and architectural foresight.