Critical Infrastructure Controls Field Engineer, Field Engineering

Field Engineering supports the safe, reliable operation and continuous improvement of data centers and other mission-critical facilities. As infrastructure systems increase in scale and complexity, controls engineering plays a central role in integrating mechanical, electrical, and software systems, detecting operational risk, and converting field experience into repeatable engineering standards. The Critical Infrastructure Controls Field Engineer provides hands-on engineering ownership for complex controls issues and gaps that are not fully addressed through routine operations, maintenance, deployment, or product support. The role covers proprietary and third-party systems, including equipment-level controls associated with air-handling and cooling systems, pumps and packaged skids, chillers, electrical monitoring and power-management systems, relay-based equipment, and other integrated critical infrastructure. The engineer leads complex post-event analysis, standardizes controls logic and code, develops controls retrofit designs, executes first-of-kind pilots, and provides field-facing engineering support for difficult controls problems. This is a hands-on execution role—not an audit-only or advisory position. Success is measured by recurring failure modes eliminated, controls risks reduced, reusable standards adopted, and validated improvements scaled across facilities and regions. Key job responsibilities * Lead advanced post-event engineering analysis for controls-related loss of visibility, loss of system resiliency, site impairment, critical events, and large-scale incidents, including root-cause analyses, technical field reports, and time-sensitive investigation reports. * Identify recurring controls failure patterns and develop scalable corrective actions, engineering standards, and system-health metrics that improve reliability across the facility portfolio. * Develop, review, standardize, and maintain controls logic and reusable code templates for mechanical and electrical equipment while preserving the intent of approved Sequences of Operations. * Improve the standardization and deployment readiness of controls code for air-handling and cooling units, pumps and packaged skids, chillers, electrical systems, and other equipment that falls outside conventional supervisory-controller support boundaries. * Scope and design controls retrofit projects; create engineering design packages and scalable templates; perform code reviews; respond to technical information requests; and lead technical validation and project closeout. * Own the engineering lifecycle for legacy Sequence of Operations update pilots, including request intake, technical review, pilot-code development, change planning, field execution, results analysis, and go/no-go recommendations for broader deployment. * Troubleshoot complex issues that exceed existing procedures or frontline support capability across Building Management Systems (BMS), Electrical Power Monitoring Systems (EPMS), programmable logic controllers (PLCs), supervisory control and data acquisition (SCADA), controllers, field I/O, sensors, actuators, communications networks, graphical interfaces, alarms, setpoints, and equipment-level logic. * Review controls drawings, wiring diagrams, network topologies, equipment submittals, control-device selection, logic programming, graphical interfaces, and deployed configurations to identify reliability, operability, cybersecurity, and maintainability risks. * Provide field-facing engineering support for proprietary and third-party controls products; aggregate defects and feature requests; and partner with product engineering teams to drive bug fixes and continuous improvement. * Create and maintain technical baselines, test scripts, success criteria, points lists, naming conventions, alarm thresholds, equipment settings, standard setpoints, code libraries, and engineering playbooks. * Partner with facility operations, maintenance, deployment,