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David Careers

Test Technician - Medium/High Voltage (Union)

Posted yesterday

asplundhSan Diego (CA)
Electrical and Electronic Engineering Technologists and TechniciansElectric Power Distribution

SENIORITY

Senior

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About the role

Test Technician – Medium/High Voltage At Asplundh Electrical Testing (AET), we power reliability across critical infrastructure—and our technicians are at the heart of that mission. We value professionals who come from hands-on, mission-critical electrical environments and bring a strong commitment to safety, ownership, and problem-solving. If you have experience working on complex electrical systems and thrive under pressure, this is a role where your skills directly translate. Join us and be part of a team known for safety, quality, and technical excellence.
Key Responsibilities: Apparatus Testing & Maintenance Perform field testing and inspection of circuit breakers, power transformers, instrument transformers (CTs/PTs), switchgear, cables, and bus systems Conduct electrical tests including:
  • Insulation resistance (Megger)
  • Power factor / Doble testing
  • Transformer turns ratio (TTR)
  • Winding resistance
  • Contact resistance
  • Breaker timing and mechanical inspections
  • Assist with commissioning, troubleshooting, and maintenance of substation equipment up to HV levels
  • Relay Testing Support
  • Assist with basic protective relay testing and functional verification during commissioning and maintenance activities
  • Support relay-related work using standard industry test sets such as:
  • Omicron CMCDoble test equipment
  • Megger relay test tools
  • Help perform simple relay checks and system verification, such as:
  • Functional checks of protection schemes
  • Verification of wiring, inputs/outputs, and control logic
  • Participate in end-to-end or system-level testing activities under supervision, without responsibility for advanced relay programming or settings development
  • General Field Responsibilities
  • Interpret single-line diagrams, wiring schematics, and equipment drawings
  • Troubleshoot electrical equipment issues and assist in root cause analysis
  • Accurately document test results and prepare field service reports
  • Ensure compliance with NETA standards, safety regulations, and company procedures
  • Travel to client sites and work in outdoor substation environments
Qualifications: Required2–5+ years of experience in electrical testing, substation maintenance, or field service Hands-on experience with medium- and high-voltage apparatus testing Familiarity with common test equipment such as:
  • MeggerDobleVanguard or similar
  • Basic understanding of protective relays and control circuits (exposure, not specialization)
  • Ability to read and interpret electrical drawings and schematics
  • Valid driver's license and willingness to travel
  • PreferredExperience in a NETA-accredited testing environmentNETA/NICET certification
  • Exposure to protective relay testing equipment (Omicron, Doble test sets, etc.)Associate degree or technical certification in Electrical Technology or related fieldOSHA 10/30 or equivalent safety training
Asplundh Electrical Testing (AET) has been a leading provider of independent electrical testing services since 1981. Headquartered in Foxboro, MA, with regional offices across the country, AET specializes in substation commissioning, acceptance testing, and maintenance for clients in electrical transmission, distribution, and generation. As a NETA-certified company and a member of Asplundh Engineering Services—a subsidiary of Asplundh Infrastructure Group—AET is committed to delivering reliable, high-quality services at competitive prices. An Asplundh Company As part of the Asplundh family, AET benefits from extensive resources and a century of experience. Together, we provide utilities with comprehensive end-to-end services, from design to construction, testing, and maintenance, ensuring reliability and peace of mind. At AET, we believe in tackling challenges together with our customers, leveraging our collective experience and resources to achieve success in every project.
Benefits: We offer a competitive range of benefits to support our employees' health, well-being, and financial security. Medical, dental, and vision benefits are available to all eligible employees on the first day of employment. For more information on the benefits available for this role, please contact the recruiter or hiring manager. Individuals with a disability who desire a reasonable accommodation can contact the ADA Coordinator by calling 1-833-222-3066. We partner with the Department of Homeland Security/U.S. Customs and Immigration Service to e-Verify all newly hired employees. An Equal Opportunity Employer.
Please note: All job offers are subject to pre-employment drug screening and a background check. Unless otherwise noted, we do not sponsor employees for work authorization in the U.S. for this position. Notice to Agencies: We only accept resumes from recruiters, employment agencies, or staffing services if a Service Agreement has been signed and we have requested recruitment/staffing services for the specific position. Any unsolicited resumes will become the property of the company, and no fees or compensation will be paid to the recruiter, employment agency, or staffing service.

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