Senior Field Service Engineer

Description

The Sr. Field Service Engineer is the technical authority for complex field service, commissioning, and modernization work on low- and medium-voltage (and, where applicable, high-voltage) power systems, including transformers and their protection and control. This role is responsible for ensuring the complete electrical system operates safely and as designed. It provides on-site leadership, ensures safe work execution, interfaces directly with customers and project teams, and mentors Field Service Engineers and technicians while driving quality, schedule adherence, and continuous improvement.

The Sr. Field Service Engineer is the technical authority for complex field service, commissioning, and modernization work on low- and medium-voltage (and, where applicable, high-voltage) power systems, including transformers and their protection and control. This role is responsible for ensuring the complete electrical system operates safely and as designed. It provides on-site leadership, ensures safe work execution, interfaces directly with customers and project teams, and mentors Field Service Engineers and technicians while driving quality, schedule adherence, and continuous improvement.

• Lead commissioning and startup of complete electrical systems, including acceptance testing and verification of system performance.
• Serve as the primary technical escalation point for advanced control, protection, and integration issues.
• Plan and perform advanced diagnostics for equipment and protection/control issues, including intermittent faults and complex system interactions.
• Perform protection relay commissioning and end-to-end verification; validate settings implementation against approved setting files and drawings.
• Execute and direct acceptance, maintenance, and condition-based testing (insulation resistance, contact resistance, timing/travel analysis, primary and secondary injection, relay logic verification, SCADA/RTU I/O checks).

• Serve as the technical authority for transformer condition assessment and failure investigation.
• Plan and perform advanced transformer diagnostics including sweep frequency response analysis (SFRA), dielectric frequency response (DFR), leakage reactance / short-circuit impedance, partial discharge, and advanced insulation power factor testing.
• Assess transformer condition by trending electrical test data, oil analysis (DGA, moisture, furan), and inspection findings against factory acceptance, commissioning, and historical baselines.
• Diagnose complex transformer faults including overheating, abnormal gassing, bushing degradation, winding deformation, and load tap changer failures.
• Lead transformer commissioning and acceptance testing for complete substations, including energization planning and switching sequences.
• Direct transformer repair, overhaul, refurbishment and retrofit programs, including LTC overhaul and internal inspection.
• Lead transformer failure investigations, report findings, and recommend repair, refurbishment, retrofit, or replacement.
• Define transformer test plans, standards, and acceptance criteria for the region and support their inclusion in the Technical Qualification Program.
• Interface with engineering and OEMs on transformer design limits, loading, and warranty or return material authorization (RMA) determinations.

• Provide technical leadership during outages, turnarounds, and critical recovery events; communicate status, risks, and mitigation plans.
• Direct testing activities and manage multiple work fronts; lead field crews, contractors, and junior engineers.
• Approve commissioning documentation and close out actions with customer sign-off.
• Mentor and supervise Field Service Engineers and technicians at Levels 1 through 4; review work quality and coach troubleshooting approach.

• Lead equipment-level and system-level modernization, retrofit, and integration projects.
• Define execution strategies, risk mitigation plans, and field quality standards for complex programs.
• Interpret retrofit drawings, relay and control information, and confirm field readiness for execution.
• Direct corrective maintenance and repair activities, including breaker overhaul support, mechanism adjustments, alignment, lubrication, and component replacement.

• Lead on-site safety briefings and enforce LOTO, arc-flash, energized work…