The Field Control Systems Engineer provides mechatronics support for Amazon's warehouse automation and material handling equipment, covering the electrical, controls, and mechanical layers. This role focuses on diagnosing and resolving electrical and controls faults, replacing and configuring devices, working with PLC logic and HMIs, interpreting system metrics, and performing IO checks, with hands-on support across both mechanical and electrical systems. The role is a systems-level technical resource supporting commissioning, go-lives, and remote and on-site troubleshooting. Key job responsibilities Diagnose and resolve electrical and controls faults across MHE (conveyors, sortation, vertical lifts). Perform electrical changes and replace controls devices: MDR cards, sensors, scanners, drives, and IO modules. Configure and parameterize devices (device configuration, drive parameters, network addressing). Work with PLC logic: read, interpret, and make minor/mid-complexity logic changes, I/O, and config files. Configure, develop, and troubleshoot HMIs; support operators with HMI access and operation. Interpret system metrics and logs to diagnose performance issues and identify root cause. Support SCADA / visualization monitoring at a working level. Lead and document RCAs on controls-related events through to resolution. Provide remote and on-site support during commissioning, go-lives, and escalations. Participate in 24/7 on-call rotation; meet First Engagement SLA (≤15 min). A day in the life This is a field-first role. Most weeks you're on-site at a deploying or live facility, boots on the floor supporting commissioning, go-lives, and break-fix. You run and verify IO checks, configure and replace devices (MDR cards, sensors, scanners, drives), and get hands-on with PLC logic and HMIs to isolate electrical, controls, and mechanical faults, working side by side with OEM and RME teams. You drive high-sev events to recovery on the spot and lead the RCA to closure so the fix becomes a repeatable standard. Expect heavy travel, especially during onboarding, training, and site ramp-ups.