Jeff Fermon

Designed, built, and operated back-end services and REST APIs in Node.js, Go, and .NET that power customer-facing Amazon products at production scale. Delivered end-to-end features, including React front ends on top of those APIs, from data model and service logic to browser UI. Integrated large language models into existing services, moving AI features from prototype through evaluation, testing, and production rollout. Set service architecture and API contracts to enable parallel front-end and back-end development and schedule-independent releases. Modernized legacy components into microservices with clear ownership, improving maintainability and shortening deployment cycles. Built unit and integration tests into CI pipelines and tuned performance by profiling hot paths and fixing slow queries to control latency and cost. Owned services in production with monitoring, alerting, on-call support, incident response, and root-cause analysis. Led design reviews, mentored engineers, document

Developed and integrated operational test control software for a real-time simulation environment used to exercise and verify system behavior. Built hardware interface software to connect simulation systems to test hardware, handling timing, data exchange, and fault conditions. Maintained and improved real-time C++ code for performance and reliability to keep the simulation deterministic under load. Designed and ran integration tests between software modules and hardware, identifying faults before formal test events. Wrote requirements, interface descriptions, and test procedures as part of systems engineering, and supported live test events by monitoring behavior in real time and resolving issues on the spot. Analyzed test data to confirm results, tracked anomalies, and fed fixes back into the software baseline. Mentored engineers on the simulation environment, test tooling, and development practices, working across software, hardware, and systems teams through design to operational u

Created schematic layouts and designed, drafted, assembled, and verified printed circuit boards. Designed software using the NI LabVIEW suite for data capture and instrument control. Assembled hardware for product demonstrations and documented board designs, assembly steps, and test results.