Field Service Supervisor I

North American Substation Services (NASS) is a national leader in transformer services and high‑voltage substation installation, maintenance, testing, and repair. With more than 20 years of experience, we deliver comprehensive, one‑stop 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, regasket and life‑extension work, substation apparatus testing, and high‑voltage equipment maintenance to ensure safe, reliable system performance. We work on a wide range of substation equipment—power transformers, breakers, switches, arresters, and control cabinets—and perform essential diagnostics such as TTR, winding resistance, insulation resistance, power‑factor testing, and oil analysis through our dedicated in‑house laboratory. With a nationwide fleet of mobile oil‑processing units, we provide rapid on‑site support backed by strong technical expertise, a commitment to safety, and disciplined field execution to keep critical power systems operating reliably 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 $43 – $51 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 Supervisor I is an emerging leadership role supporting inspection, repair, and maintenance of transmission and distribution substation equipment. This role coordinates daily field activities, reinforces safety and quality standards, and guides technicians through transformer assembly, apparatus inspections, routine maintenance, and basic troubleshooting.

• Lead and support crews performing inspection, installation, maintenance, and repair of transformers and high voltage apparatus. 
• Reinforce a strong safety culture through PPE adherence and regular Job Behavior Observations (JBOs). 
• Plan and coordinate field activities including task assignments and resource planning. 
• Maintain documentation of service activities, equipment status, and customer interactions. 
• Provide technical guidance and mentoring to field technicians. 
• Stay informed on transformer technologies and substation practices. 
• Address customer concerns and support issue resolution. 
• Prepare reports related to service performance and project outcomes. 

Required: 

• High school diploma or equivalent 
• Strong communication and organizational skills 
• Ability to work independently and as part of a field team 
• Proficiency with MS Office and digital file systems 
• Valid driver’s license and insurable record 
• Ability to lift up to 50 lbs. and work in outdoor high voltage environments 
• Frequent travel, including overnight stays 

Preferred: 

• Experience in high voltage testing or transformer/substation maintenance 
• Scheduling or project coordination experience 
• Familiarity with transformer components and apparatus diagnostics 
• Exposure to power factor sets, insulation resistance testers, TTR devices, or similar tools 

Work Environment & Physical Requirements: 

• Outdoor substation environments with weather, noise, and energized equipment 
• Regular travel and overnight stays 
• PPE required  

EEO Statement 

NASS, an Asplundh Power Company, is an Equal Opportunity Employer. All qualified applicants will receive consideration without regard to race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), national origin, age, disability, veteran status, or any other protected characteristic. NASS does not engage with individual recruiters or third party staffing agencies. Unsolicited résumés will not be accepted.