Overview
Field Service Technician III
North American Substation Services (NASS) is a national leader in transformer services and highvoltage substation installation, maintenance, testing, and repair. With more than 20 years of experience, we deliver comprehensive, onestop solutions for utilities, industrial operations, and critical infrastructure across the United States. Our teams support the full lifecycle of substation and transformer assets, including installation, maintenance, major repairs, and diagnostic testing.
Core services include transformer assembly, oil processing,regasketand lifeextension work, substation apparatus testing, and highvoltage equipment maintenance to ensure safe, reliable system performance. We work on a wide range of substation equipment1power transformers, breakers, switches, arresters, and control cabinets1and perform essential diagnostics such as TTR, winding resistance, insulation resistance, powerfactor testing, and oil analysis through our dedicated inhouse laboratory. With a nationwide fleet of mobile oilprocessing units, we provide rapid onsite support backed by strong technicalexpertise, a commitment to safety, and disciplined field execution to keep critical power systemsoperatingreliably and efficiently.
Benefits
- Medical, dental, and vision coverage
- 401(k) savings plan with company match
- Health Savings Account (HSA) and/or Flexible Spending Account (FSA)
- Life and AD&D insurance
- Short-term and long-term disability coverage
- Employee Assistance Program (EAP)
Perks
- Competitive pay
- Talent development through instructor-led and online learning
- Career path planning
- Incentives for professional certifications
- Per diem for travel
- Referral bonuses
- Tuition reimbursement
Pay:
The hourly rate for this position is between$35 6 per hour.Factors which may affect starting pay within this range may include geography/market, skills, education, experience, and other qualifications of the successful candidate.
Position Overview:
The Field Service Technician III serves as a senior field technician responsible for advanced assembly, maintenance, testing, diagnostics, and repair of transformers and high voltage apparatus. This role performs hands-on transformer services with minimal supervision and supports complex projects through technical expertise, troubleshooting, and leadership of junior technicians.
Responsibilities
- Model and reinforce safe work practices, PPE requirements, and company safety policies.
- Perform transformer testing and apparatus work as a lead technician on installation, maintenance, and emergency jobs.
- Install, test, andmaintainelectrical apparatus withstrongunderstanding of transformer components and field practices.
- Troubleshoot and resolve issuesidentifiedduring diagnostics and testing.
- Interpret and analyze test results accurately, supporting field decisions.
- Develop testing plans andassistwith execution of field test procedures.
- Operate oil processing and vacuum rigs, including dry-outs, circulation, and top-off procedures.
- Complete documentation, inspections, job briefs, and work order entries.
- Maintain professional communication with supervisors, crew members, and customers.
- Install andassistwith commissioning monitoring devices such as Calisto sensors
Qualifications
Required:
- Five or more years of transformer services, substation apparatus work, or related high voltage field experience
- High school diploma or GED
- Valid driver27s license and insurable record
- Ability to stand, walk, climb, andlift upto 50 lbs.
- Ability to safely work in outdoor, energized, high voltage environments
- Willing and able to travelfrequently(~75%), including overnight and occasional international travel
- Willingness to work overtime, nights, weekends, and holidays
- Ability to complete background checks and medical evaluations
Preferred:
- CDL or interest in obtaining one
- NCCCO crane certification
- Strong knowledge of mechanical and electrical maintenance tools
- Familiarity with grounding, LOTO, and arc-flash boundaries
- Ability to read diagrams, one-lines, schematics, and metering devices
- Desire to developadditionaltransformer diagnostics and testing skills
Work Environment & Physical Requirements:
- Outdoor field role with exposure to weather, noise, and energized equipment
- Travel may include extended stays and international trips
- Reasonable accommodations may be provided
