Developed and maintained backend systems: containerized JBOSS with Docker and JDWP remote debugging to streamline setup; implemented Spring Batch and parallel stream processing to improve batch performance by 70%; fixed Node.js module compilation issues and documented builds (compilation efficiency +8%); refactored Spring Boot claim-handling logic to remove redundancy and improve maintainability.

Automated test data generation with a Visual Basic tool to consolidate Excel workbooks (+46% efficiency); enhanced Arduino test scripts to support Thunderbolt 5 devices and increased automation coverage by 20%; performed electrical transfer and signal integrity testing on notebook hosts for Thunderbolt device validation.