Commissioning Technician

Woojin IS America, Inc; Bellevue (WA); On-site; USD 60,000 - 90,000; Full time

Job summary

Woojin IS America, Inc. in Santa Fe Springs, CA, seeks an experienced electrical technician to support the removal, installation, commissioning, and validation of new E-Suite equipment on Light Rail Vehicles (LRVs).

You will perform routine and functional tests, troubleshoot issues, and assist field validation campaigns at customer sites. Candidates should have at least 3 years of hands-on electrical installation and testing experience, be proficient with schematics and wiring diagrams, and

Qualifications

• High School diploma or equivalent required.
• Technical degree or certification preferred.
• Minimum 3 years of hands-on electrical installation, testing, or commissioning.
• Experience in rail, automotive, aerospace, or industrial equipment preferred.
• Ability to read electrical schematics and wiring diagrams.

Responsibilities

• Remove OEM equipment and prep vehicles for new E-Suite installation.
• Install electrical panels, harnesses, and E-Suite components per drawings.
• Perform wiring, crimping, and connector assembly.
• Execute commissioning and validation tests per procedures.
• Report results and address anomalies or non-conformities.
• Provide warranty support and field testing at customer sites.
• Ensure safety and maintain clean work area.
• Handle inventory, shipping/receiving as needed.

Skills

Electrical testing

Schematics & diagrams

Crimping & wiring

Troubleshooting

Field support

Safety compliance

Education

High School Diploma or equivalent

Technical degree or certification in Electrical or Electronics

Tools

Multimeters

Meggers

Hi-pot testers

Crimping tools

Power tools

Job description

Type: Full-time / Project-based (Non-Exempt)

Reports to: Commissioning Supervisor

About Us

Woojin IS America, Inc. (WISA), situated in Santa Fe Springs, CA, has become a fast-growing company specializing in manufacturing electric equipment for rolling stock and light rail vehicles. We are currently serving North America customers with endless technological innovations for safe and reliable transportation equipment that supports the life of the vehicle.

Job Objective

Support the removal, installation, commissioning, and validation of new E-Suite equipment on Light Rail Vehicles (LRVs). The role includes executing routine and functional tests, troubleshooting technical issues, supporting field validation campaigns, and providing warranty support for vehicles in service.

Key Responsibilities

• Remove OEM equipment and prepare vehicles for new E-Suite installation.
• Install electrical panels, harnesses, and E-Suite components following engineering drawings and schematics.
• Perform wiring, cable preparation, crimping, and connector assembly.
• Execute commissioning and validation tests according to approved procedures.
• Record, analyze, and report test results, document any anomalies or non-conformities.
• Troubleshoot electrical and control systems to identify root causes of issues and implement corrective actions.
• Support field validation campaigns and functional testing at customer sites.
• Provide technical assistance during warranty activities and vehicle support operations.
• Follow all company safety requirements and maintain a clean, organized work environment.
• Perform any additional tasks assigned by the supervisor or manager related to project execution.

Additional Responsibilities as needed:

• Part inventory, control and documentation
• Shipping and receiving
• Cleanup work areas and LRV’s

Core Competencies

Technical Skills (Mandatory):

• Skilled in the use of multimeters, meggers, hi-pots, and other electrical test instruments.
• Strong capability using hand tools, crimpers, and electrical assembly equipment.
• Ability to read and interpret electrical schematics, block diagrams, and wiring diagrams.
• Proficiency in troubleshooting faulty circuits and electrical systems.
• Experience using power tools and machinery in an industrial environment.
• Demonstrate teamwork and collaboration across departments.
• Communicate clearly and transparently with supervisors and peers.
• Maintains safety awareness and professional conduct on the shop floor.
• Work independently with minor or no supervision.
• Be meticulous, prioritize work, and understand urgencies.

Requirements

Education:

• High School Diploma or equivalent required.
• Technical degree or certification in Electrical or Electronics preferred.

Experience:

• Minimum 3 years of hands‑on experience in electrical installation, testing, or commissioning (rail, automotive, aerospace, or industrial equipment preferred).

Knowledge:

• Solid understanding of electrical systems, which includes 12VDC–72VDC
• Familiarity with vehicle or equipment control systems and interfaces.
• Good knowledge of schematics, wire lists, and functional diagrams.
• Electrical safety including lock out tag out.
• Experience following written procedures and redlining, if required.
• Computer literacy including software loading (drivers, firmware)

Working Conditions & Other Requirements

• Work performed primarily in a rail depot and heavy industrial environment.
• Must be able to lift up to 50 lbs. and work outdoors when required.
• Kneeling, bending, working in tight spaces, hot, humid, wet, and cold environments.
• Must be flexible with shifts, overtime, and occasional weekend work based on project needs.
• Must hold a valid driver's license.
• International travel may be required for an extended period of time; therefore, must hold a valid passport or obtain one once hired.