Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Senior Relay Technician - Utility & High-Voltage Protection - Union

Asplundh Electrical Testing, LLC

Description

About the Role

At Asplundh Electrical Testing , safety is not a priority—it is our foundation. The Senior Relay Technician plays a critical role in ensuring the safe, reliable operation of medium‑ and high‑voltage utility substations through advanced protective relay testing, commissioning, and maintenance activities.

This position is ideal for professionals with a utility background who have hands‑on experience testing and commissioning transmission and distribution protection systems . You will serve as a technical lead in the field, guide crews through complex outage work, and reinforce Asplundh’s reputation for safety, precision, and service excellence.

We are experiencing strong growth and are immediately hiring Senior Relay Technicians with deep expertise in protection and control, relay schemes, and substation energization . If you enjoy solving complex protection challenges, leading safe work execution, and influencing system reliability at scale, we’d like to speak with you.

As a NETA‑accredited, independent electrical testing and engineering organization , Asplundh Electrical Testing sets the benchmark for technical excellence and unwavering safety across the utility, renewable energy, data center, and industrial sectors .

Candidates must be authorized to work in the United States for any employer at the time of hire. This position is not eligible for visa sponsorship.

What You’ll Do

  • Lead job briefings and safety tailboards, reinforcing a “Safety First, Always” field culture
  • Perform protective relay testing, calibration, troubleshooting, and commissioning on medium‑ and high‑voltage systems
  • Test and validate transmission and distribution protection schemes , including:
    • Distance, differential, overcurrent, breaker failure, and bus protection
  • Verify control and protection circuits for:
    • Power transformers
    • Medium‑ and high‑voltage circuit breakers
    • Feeder relays
    • Capacitor banks and reactors
  • Support outage planning, switching coordination, energization, and restoration activities
  • Perform event analysis, relay target review, and disturbance investigations
  • Lead and mentor onsite technicians; coordinate work execution with project managers, system operators, and utility customers
  • Create and maintain accurate test reports, as‑left settings, and field documentation
  • Participate in job walks, project estimating, and customer technical discussions
  • Serve as a technical resource and trainer for developing relay technicians

Travel Requirements:
Work is performed at customer sites throughout the assigned region. Regular regional travel is required, with opportunities for extended assignments outside the region as needed.
✔ Company vehicle provided for regional work‑related travel.

What You Bring
  • 5+ years of hands‑on experience in protective relaying for utility substations
  • Demonstrated experience testing medium‑ to high‑voltage (5kV–500kV) protection systems
  • Strong working knowledge of microprocessor‑based relays
  • Experience with modern relay test platforms
  • Solid understanding of utility safety rules, energized work practices, and lockout/tagout procedures
  • Ability to interpret:
    • Protection diagrams
    • AC/DC schematics
    • Wiring and logic drawings
  • Valid driver’s license; ability to work outdoors, travel, and lift up to 70 lbs
Education & Credentials
  • NETA Level III or IV Certification preferred for Senior roles
    (Candidates at other NETA levels are encouraged to apply for opportunities across the organization)
  • Experience with:
    • Circuit breakers
    • Power transformers
    • Switchgear
    • RTUs and substation communications
  • Technical degree, apprenticeship, or military electrical training
  • OSHA 10 or OSHA 30
  • Valid driver’s license with a clean driving history

What We Offer

At Asplundh Electrical Testing, we invest in the well‑being of our people. Eligible employees enjoy a comprehensive benefits package designed to support their health, financial security, and work‑life balance, including:
  • Medical, dental, and vision coverage starting on day one
  • Retirement plan to help you secure your future
  • Company‑provided life insurance for added peace of mind
  • Supplemental life insurance options, including spouse and child coverage
  • A variety of voluntary Aflac supplemental insurance programs
  • Long‑term disability coverage
  • Pre‑paid legal plan
  • Employee Assistance Program (EAP) to support personal and professional well‑being
  • Paid time off to recharge and refresh
  • Paid holidays
  • Access to employee discount programs and helpful resources
*Benefits listed above are available to eligible employees. Eligibility requirements and plan provisions apply

Please note:   For roles that fall within union‑represented territories, certain benefits and employment terms may differ from what’s listed here. In those cases, the applicable local union agreement will guide the specific benefits and provisions. We’re committed to transparency and will walk you through what applies to your location during the hiring process.

Who We Are

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.

Our Commitment

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 View phone number on click.appcast.io. 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.
Vacancy posted 2 days ago
Similar jobs that could be interesting for youBased on the Senior Relay Technician - Utility & High-Voltage Protection - Union in Los Angeles, CA vacancy
  • $26.44 per hour

     ...Senior Technician - Poles Company: Davey Tree Surgery Co. Locations...  ...Duties Properly inspect utility poles by visually looking...  ...wage Benefits through union agreement including health insurance...  ...without regard to protected class, including race, color... 
    Union
    Senior
    Permanent employment
    Full time
    Work experience placement
    Work at office

    The Davey Tree Expert Company

    Los Angeles, CA
    4 days ago
  • $71.75k - $107.62k

     ...maintenance execution, solve complex utilities and equipment, and mentor...  ...utilities. Education: High School Diploma/GED, associate...  ...up to site-authorized voltage, reading P&IDs/schematics/single...  ...candidates, regardless of their protected characteristics. If you have... 
    Senior
    Hourly pay
    Temporary work
    Apprenticeship
    Shift work
    Afternoon shift

    AstraZeneca

    Los Angeles, CA
    1 day ago
  • $29.42 - $47.09 per hour

     ...Propulsion Technician (OTW) Senior Second Shift – Millennium Space Systems Company...  ...in propulsion assembly on high reliability products (preferably...  ...Information: This is a union-represented position This is...  ...Careers website. Learn how to protect yourself from recruitment... 
    Union
    Senior
    Hourly pay
    Permanent employment
    Interim role
    Currently hiring
    Local area
    Relocation
    Visa sponsorship
    Work visa
    Relocation package
    Flexible hours
    Shift work
    Afternoon shift

    Millennium Space Systems

    El Segundo, CA
    8 hours ago
  • $29.42 - $47.09 per hour

     ...Summary The Aerospace Vehicle Technician will be responsible for...  ...Required Skills/Experience): High School Diploma or GED...  ...Additional Information: This is a union-represented position This...  ...status or other characteristics protected by law. Boeing is an Equal... 
    Union
    Senior
    Hourly pay
    Permanent employment
    Interim role
    Currently hiring
    Local area
    Relocation
    Visa sponsorship
    Work visa
    Relocation package
    Flexible hours
    Shift work
    Afternoon shift

    The Boeing Company

    El Segundo, CA
    2 days ago
  • $29.42 - $47.09 per hour

     ...terminate wiring harnesses to a high quality for racks and boxes...  ...4 years experience as a technician in aerospace or an equivalent...  ...Familiar with the use of personal protective equipment (PPE) Demonstrated...  ...& Benefits This is a union‑represented, hourly position... 
    Union
    Senior
    Hourly pay
    Permanent employment
    Local area
    Trial period
    Flexible hours
    Shift work
    Day shift

    Boeing

    El Segundo, CA
    6 days ago
  • Propulsion Technician (OTW) Senior Second Shift - Millennium Space Systems Company...  ...in propulsion assembly on high‑reliability products (preferably...  ...Information This is a union‑represented hourly position...  ...military/veteran status, or other protected characteristics. EEO is the... 
    Union
    Senior
    Hourly pay
    Permanent employment
    Local area
    Flexible hours
    Shift work
    Afternoon shift

    Boeing

    El Segundo, CA
    3 days ago
  • $29.42 - $47.09 per hour

    Aerospace Vehicle Technician Senior 1st Shift at Millennium Space Systems...  ...Basic Qualifications (Required) High School Diploma or GED....  ...Additional Information This is a union‑represented, hourly position...  ..., age, disability, or other protected characteristics. EEO is the... 
    Union
    Senior
    Hourly pay
    Permanent employment
    Local area
    Visa sponsorship
    Free visa
    Flexible hours
    Shift work
    Day shift

    Boeing

    El Segundo, CA
    5 days ago
  • $29.42 - $47.09 per hour

     ...Position Overview As a Harness Technician Sr, you will work hands‑on...  ...terminate wiring harnesses to a high quality and repetitious...  ...Familiar with the use of personal protective equipment (PPE) Demonstrated...  ...Information This is a union‑represented position This is... 
    Union
    Senior
    Hourly pay
    Permanent employment
    Currently hiring
    Local area
    Relocation
    Visa sponsorship
    Work visa
    Relocation package
    Flexible hours
    Shift work
    Day shift

    The Boeing Company

    El Segundo, CA
    3 days ago
  •  ...Traffic Control Technician Connecting People to Possibility...  ...leads the way in utility and energy infrastructure...  ...safety precautions to protect motorists and construction...  ...You'll Have ~ High School diploma or equivalent...  ...card Join and maintain Union membership Our... 
    Union
    Weekly pay
    Permanent employment
    Temporary work
    For contractors
    Local area

    CENTURI CONSTRUCTION GROUP Inc

    Glendale, CA
    2 days ago
  • $142.09k - $308.46k

    Senior Hydraulic Structures Engineer Date: Jun 8, 2026 Location: Denver...  .... Deliver innovative and high‑quality design products,...  ...voluntary legal plan, B&V Credit Union access. Equal Employment Opportunity...  ...status or other status protected by law. #J-18808-Ljbffr Black... 
    Union
    Senior
    Work experience placement
    Work at office
    Flexible hours

    Black & Veatch

    Los Angeles, CA
    4 days ago
  • $29.42 - $47.09 per hour

    Position Overview Senior Electro‑Mechanical Technician - Second Shift - Millennium Space...  ...coating. Basic Qualifications High School Diploma or GED....  ...assigned shift is required. Union: Hourly, union‑represented...  ...any other characteristic protected by law. Inclusive hiring practices... 
    Union
    Senior
    Hourly pay
    Interim role
    Work at office
    Local area
    Relocation
    Relocation package
    Flexible hours
    Shift work
    Afternoon shift

    Boeing

    El Segundo, CA
    3 days ago
  • $140k - $200k

     ...Senior R&D Software Engineer - Networked Electronic Warfare THE COMPANY...  ...from underground tunnels to high altitude balloons. Silvus...  ...or expression, marital, civil union or domestic partnership status...  ...physical or mental disability, protected veteran status, genetic information... 
    Union
    Senior
    Local area
    Remote work

    SILVUS TECHNOLOGIES

    Los Angeles, CA
    3 days ago
  • $29.42 - $47.09 per hour

    Boeing is looking for a Senior Electro-Mechanical Technician to join its Millennium Space Systems team in El Segundo, California...  ...3 years of experience in the field and a high school diploma. This position is onsite and governed by a union, requiring U.S. citizenship for security... 
    Union
    Senior
    Hourly pay

    Boeing

    El Segundo, CA
    4 days ago
  • $34.62 - $42.31 per hour

     ...Title: Field Installation Technician (Electrical/Low Voltage) Belong. Connect. Grow. with KBR! Who We AreKBR Mission...  ...origin, veteran status, genetic information, union status and/or beliefs, or any other characteristic protected by federal, state, or local law.... 
    Union
    Contract work
    Temporary work
    Local area
    Relocation package
    Flexible hours

    KBR

    Los Angeles, CA
    2 days ago
  • $29.42 - $47.09 per hour

    Maintenance Technician Senior - Millennium Space Systems Company: Millennium...  ...Required Skills/Experience): High School Diploma or GED 5 years...  ...Additional Information: This is a union-represented position This is...  ...website. Learn how to protect yourself from recruitment fraud... 
    Union
    Senior
    Hourly pay
    Permanent employment
    Full time
    Interim role
    Currently hiring
    Work at office
    Local area
    Relocation
    Visa sponsorship
    Work visa
    Relocation package
    Flexible hours
    Shift work
    Day shift

    Boeing

    El Segundo, CA
    4 days ago
  • $33 - $35 per hour

     ...contributor brings, and we hold everyone to a high standard. Our informal structure...  .... The Role We are hiring a Senior Low Voltage Technician to maintain the signage, structured cabling...  .... It is not a prevailing-wage or union role. AmpThink is an equal opportunity... 
    Union
    Senior
    Full time
    Contract work
    Work at office
    Flexible hours
    Shift work

    AmpThink

    Inglewood, CA
    4 days ago
  • $145.1k - $181.4k

     ...partnership status, disability, age, sexual orientation, pregnancy, maternity or parental status, trade union membership or membership in any other legally protected category. We strive to create an inclusive environment, empower employees and embrace diversity. We encourage... 
    Union
    Senior

    PlayStation

    Santa Monica, CA
    5 days ago
  • $145.1k - $181.4k

     ...we collect, how we use it, who we share it with, and your data protection rights. Equal Opportunity Statement: Sony is an Equal Opportunity...  ...orientation, pregnancy, maternity or parental status, trade union membership or membership in any other legally protected category... 
    Union
    Senior

    PlayStation Network

    Santa Monica, CA
    2 days ago
  • $136.3k - $204.4k

     ...communities improve, reuse, and protect our world’s most...  ...are seeking a skilled Senior Control System...  ...working with multiple utilities in North America to develop...  ...software configuration of high-availability server configurations...  ...above may not apply to union positions because... 
    Union
    Senior
    Full time
    Temporary work
    Part time
    Casual work
    Live in
    Work at office
    Local area
    Flexible hours

    Stantec Consulting International Ltd.

    Pasadena, CA
    4 days ago
  •  ...Description Job Description Senior Field Service Technician  WET (Design) / WET...  ...power distribution and protection Programmable logic...  ...transformers, contacts, relays, fuses, circuit protection...  ...maintenance, and repair of high voltage induction and synchronous... 
    Senior
    Apprenticeship

    WET

    Los Angeles, CA
    10 days ago
  • $104.31k - $139.08k

     ...079 FLSA Exempt / Union Represented This position...  ...Trust Account Protection Program (CTAPP),...  ...Role The CTAPP Senior Accountant plays an...  ...duties. Duties involve highly complex and...  ...financial systems utilizing a variety of professionally...  .... Receive and relay detailed... 
    Union
    Senior
    Contract work
    For contractors
    Work at office
    Remote work
    Flexible hours

    The State Bar of California

    Los Angeles, CA
    1 day ago
  • $35 - $60 per hour

     ...Electrical Field Service Technician NETA II / III / IV | NICET EPT | or Equivalent...  ...testing of medium- and high-voltage equipment across utility, industrial, and data center environments...  ...Circuit breakers Protective relays and protection systems Execute... 
    Hourly pay
    Daily paid
    Traineeship
    Monday to Friday

    Step Up Recruiting

    Los Angeles, CA
    4 days ago
  •  ...seeking experienced Senior Electro‑Mechanical Technicians to join our growing...  ...crews by utilizing CMMS, logbooks, and...  ...control of current, voltage, temperature, humidity...  ...required personal protective equipment: uniform/...  ...Qualifications Possess a High School Diploma/GED... 
    Senior
    Local area
    Flexible hours
    Shift work
    Night shift
    Day shift

    Kindeva-Drug-Delivery-Careers

    Los Angeles, CA
    4 days ago
  •  ...Willdan is seeking a Senior Construction...  ...Agreements (PLA) and union jurisdiction requirements...  ...clients, utilities, and stakeholders,...  ...staff and foster a high-performance team environment...  ...and oral form. Relays confidence and...  ...classification protected by federal, state... 
    Union
    Senior
    Contract work
    For contractors
    For subcontractor
    Work at office
    Local area

    Willdan

    Los Angeles, CA
    2 days ago
  •  ...Service Power Generation Technician/ Mechanic Diagnoses...  ...maintenance/repairs utilizing diagnostic tools...  ...maintenance abilities. High Voltage / Low Voltage experience...  ..., age, religion, union affiliation, sexual orientation...  ...identity, or other status protected by law. Cummins
    Union
    Apprenticeship
    Work experience placement
    Relocation package

    Cummins

    Santa Fe Springs, CA
    3 days ago
  • $72.5k

     ...Field Service Technician - Post Press Location: Los Angeles,...  ...Applications) Knowledge of high and low voltage wiring, capability of identifying...  ...expression, marital, civil union or domestic partnership...  ...present military service, protected veteran, family medical... 
    Union
    For contractors
    Casual work
    Remote work
    Night shift

    Heidelberg

    Los Angeles, CA
    5 days ago
  • $25 - $35 per hour

     ...experienced Field Service Technician responsible for...  ...this role requires a high level of productivity...  ...Demonstrate proficiency in low voltage (LV) and high voltage...  ...the use of personal protective equipment from the...  ...Kingdom, and the European Union and in the cloud, and... 
    Union
    Hourly pay
    Contract work
    Local area
    Remote work
    Night shift

    XOS

    Los Angeles, CA
    8 hours ago
  •  ...Operations & Maintenance Technician IV – Mechanical (...  ...equipment across water utility facilities such as pumps...  ...use of personal protective equipment (PPE) and respiratory...  .... Qualifications High school diploma or equivalent...  .... MWD high voltage switching certification... 
    Shift work

    The Metropolitan Water District of Southern California

    Los Angeles, CA
    8 hours ago
  • $25.88 - $38.1 per hour

     ...and a desire to protect it for future...  ...Field Service Technician who will support...  ...accessories. Utilize available technical...  ...feedback to senior technicians or...  ...spirit and maintain high-quality work...  ...Low Voltage & Electrical Systems...  ...and the European Union and in the cloud... 
    Union
    Hourly pay
    Full time
    Contract work
    Temporary work
    Part time
    Work experience placement
    Local area
    Remote work
    Shift work
    Night shift
    Afternoon shift
    Early shift

    Rivian

    Los Angeles, CA
    8 hours ago
  • $32 - $45 per hour

     ...Fire Alarm Service Technician We are seeking a skilled Fire Alarm...  ...experience with programming low voltage systems including fire alarm,...  ...a ladder, scaffolding and high lift equipment up to 60 feet,...  ...veteran status, disability, protected medical condition as defined... 
    Senior
    Weekly pay
    For contractors
    Local area
    Flexible hours

    HCI Systems

    Pasadena, CA
    2 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Senior Relay Technician - Utility & High-Voltage Protection - Union. Be the first to apply!