Developed a new search capability for the meshtrade/api repository, focusing on implementing a uint32 range criterion to enhance query precision. This work involved refactoring Protocol Buffers definitions and introducing a dedicated Go implementation to support the new criterion type, ensuring robust handling of range-based searches. The feature was delivered in a single, well-structured commit and prepared for quality assurance and integration. By leveraging skills in API development, backend engineering, and Protocol Buffers, the developer laid the foundation for future enhancements to the search functionality, enabling more flexible and precise queries within the API while maintaining clean and maintainable code.