Transformer Supervisor

NASS; St. Louis (MO); On-site; USD 80,000 - 120,000; Full time

Benefits offered by this job

Medical, dental, and vision coverage

401(k) savings plan

Life and AD&D insurance

Short-term and long-term disability coverage

Employee Assistance Program (EAP)

Referral bonuses

Tuition reimbursement

Job summary

A national leader in transformer services is seeking a Field Service Supervisor II in St. Louis, Missouri. You will lead field crews performing advanced inspection and maintenance of electrical equipment. Key responsibilities include coordinating work, ensuring safety, and providing technical guidance. Ideal candidates have a high school diploma and 3+ years of experience in the industry. This role requires proficiency with MS Office and may involve frequent travel. Competitive benefits and a commitment to safety culture are offered.

Qualifications

• 3+ years of experience in transformer services or high voltage work.
• Valid driver’s license and insurable driving record.
• Ability to lift/carry up to 50 lbs.
• Proficiency with MS Office and digital documentation systems.
• Valid driver’s license and insurable driving record.
• Ability to lift up to 50 lbs. and work safely in outdoor, high voltage environments.
• Frequent overnight travel and overtime availability.
• Willingness to complete background checks and medical testing where permitted.

Responsibilities

• Lead crews in inspection, maintenance, and repair of substation equipment.
• Plan and coordinate daily field activities and task assignments.
• Provide technical guidance to technicians.
• 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.

Skills

Strong organizational skills

Communication skills

Leadership abilities

Proficiency with MS Office

Safety awareness

Education

High school diploma or equivalent

Tools

MS Office

Job description

Field Service Supervisor II

Overview

Field Service Supervisor II 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

Position Overview

The Field Service Supervisor II leads field crews in advanced inspection, repair, and maintenance of transmission and distribution substation electrical equipment. Responsibilities include coordinating work assignments, ensuring safe and efficient execution of transformer services (testing support, oil-processing activities, bushing and gasket work), and driving documentation accuracy and job‑site communication.

Responsibilities

• 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.

Qualifications

Required:

• High school diploma or equivalent
• 3+ years of experience in transformer services, high voltage apparatus work, or related utility/industrial field operations
• Strong organizational and communication skills; ability to lead crews and coordinate daily field activities
• Proficiency with MS Office and digital documentation systems
• Valid driver’s license and insurable driving record
• Ability to lift/carry up to 50 lbs. and work safely in outdoor, high voltage environments
• Frequent overnight travel; ability to work variable hours including overtime
• Willingness to complete background checks and post‑offer medical evaluation/drug testing where permitted

Preferred:

• High voltage apparatus testing experience (TTR, winding resistance, power factor, insulation resistance, CT/PT)
• Transformer assembly, processing, or maintenance experience
• NCCCO crane certification or relevant rigging/lifting experience
• Working knowledge of substation hazards, LOTO, grounding, and arc‑flash safety practices
• Ability to read and interpret electrical prints, one‑lines, diagrams, and test data
• Understanding of transformer theory, oil-processing fundamentals, and substation equipment operation

Work Environment & Physical Requirements

• Outdoor substation and industrial environments with weather, noise, and energized equipment
• Regular domestic travel with occasional international travel
• PPE required; reasonable accommodations may be made

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.