Field Service Test Technician

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. 

This position is responsible for performing substation testing as a test technician. As an entry level test technician basic tasks and tests will be performed allow with the assistance to more experienced technicians. Maintaining safety is the top priority. 

• →Knowledge of electrical theory and ability to communicate transformer operations.
• →Perform basic tests on transformer & circuit breakers. i.e. Insulation Resistance, Contact Resistance, Core Ground, Oil Sampling, and/or Ratio tests
• →Read & understand a drawings and diagrams.
• →Assist with grounding – knowledge of clearance, LOTO, etc.
• →Testing equipment set up.
• →Leader in Safety Culture.
• →Adhere to all company safety policies and procedures, including the use of personal protection equipment (PPE).
• →Participate in safety training programs and meetings.
• →Ensure that all field service activities are carried out in accordance with all safety guidelines and company policies.

• High School diploma or GED. Supplemental courses in electrical maintenance desired.
• Must possess a current and valid driver’s license, and be able to maintain a good driving record.
• Must be able to crawl, climb, stand and lift up to 50 lbs. with or without reasonable accommodations.
• Must be able to pass a fit for duty exam.
• Must be available for regular overnight domestic travel and occasional international travel.
• Must be willing to work flexible hours and overtime, and occasional weekends, holidays and nights.
• Able and willing to travel up to 75% as needed.

• Commercial Driver's License (CDL)
• NCCO Crane Certification 
• Some knowledge of the fundamentals and principles of electricity preferred.
• Knowledge of the hazards and safety precautions required in working in a power distribution facility preferred.
• Ability to learn to read and interpret electrical diagrams and prints.
• Ability to learn to read and interpret a variety of power generation and distribution metering and recording devices.
• Ability to learn the practices and procedures of the industry.
• Ability to follow oral and written directions.

Work outdoors in all weather conditions. Occasionally work is performed near moving mechanical parts in high, precarious places and is occasionally exposed to wet and/or humid conditions, ambient air, temperature extremes, fumes and airborne particulates, traffic, toxic or caustic chemicals, electrical shock hazard, noise pollution, and vibration.

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.