Senior Relay Technicians

Oscar; Detroit (MI); On-site; USD 60,000 - 90,000; Full time

Job summary

Oscar is seeking Field Service Technicians I–IV to support high-voltage substation testing, commissioning, and power system maintenance across multiple sites in the United States.

This role offers growth from early-career to senior levels, with responsibilities increasing in scope and technical complexity, leading small teams and coordinating with engineering and clients.

Candidates should have electrical testing experience, ability to read diagrams, and willingness to travel.

Qualifications

• Associate's Degree, Bachelor's Degree, Technical Certificate, or equivalent electrical field experience.
• Basic understanding of electrical systems, substations, transformers, and power distribution equipment.
• Ability to read electrical drawings and schematics.

Responsibilities

• Lead testing and commissioning activities on substation equipment and protective relay systems.
• Analyze test results and prepare commissioning documentation.
• Read and interpret electrical schematics, wiring diagrams, and one-line drawings.
• Lead smaller field assignments and mentor junior technicians.

Skills

Substation Testing

Electrical Commissioning

Protection & Control

Relay Testing

High Voltage Systems

Electrical Troubleshooting

Root Cause Analysis

Transformer Testing

Switchgear Testing

Circuit Breaker Testing

Power Systems

Utility Infrastructure

Electrical Safety

NFPA 70E

Transmission & Distribution

Education

Associate's Degree

Bachelor's Degree

Technical Certificate

Tools

Doble testing equipment

Omicron testing equipment

Megger testing equipment

Job description

Field Service Technician I-IV (Testing & Commissioning)

About the Opportunity

A leading provider of engineering, construction, testing, and commissioning services for the electric utility, industrial, renewable energy, and power generation industries is seeking Field Service Technicians at multiple experience levels to support high-voltage substation and power system testing, maintenance, and commissioning projects.

This position offers opportunities for early-career through senior-level professionals. Scope of responsibility, technical complexity, and leadership expectations increase with each level.

Responsibilities

Field Service Technician I

• Assist with testing and commissioning of high-voltage substations, transformers, switchgear, circuit breakers, and protective relay systems.
• Perform electrical testing under supervision, including insulation resistance, contact resistance, transformer turns ratio, power factor, and breaker timing tests.
• Support relay testing and calibration using industry-standard testing equipment.
• Assist with testing and maintenance of station batteries, battery chargers, inverter systems, and AC/DC auxiliary equipment.
• Record test data and support startup and energization activities.
• Maintain accurate testing documentation and reports.
• Follow company safety practices, lockout/tagout procedures, and electrical safety standards.

Field Service Technician II

• Independently perform testing and commissioning activities on substation equipment and protective relay systems.
• Conduct transformer, breaker, switchgear, and relay testing with minimal supervision.
• Analyze test results and prepare commissioning documentation.
• Read and interpret electrical schematics, wiring diagrams, and one-line drawings.
• Lead smaller field assignments and assist with mentoring junior technicians.

Field Service Technician III

• Lead complex testing and commissioning projects involving substations, transformers, breakers, protective relays, and station auxiliary systems.
• Perform advanced relay testing and troubleshooting, including differential, distance, and bus protection systems.
• Diagnose equipment issues and perform root cause analysis.
• Serve as the primary technical resource for assigned projects.
• Coordinate with engineering teams, project management, and clients regarding technical issues and project execution.

Senior Field Service Technician

• Manage and oversee field testing and commissioning activities on assigned projects.
• Lead multi-person field crews across multiple project sites.
• Serve as the primary client-facing technical representative.
• Develop testing procedures, switching plans, and commissioning plans.
• Review and approve testing documentation and project deliverables.
• Mentor and train technicians while supporting workforce development initiatives.

Qualifications

Technician I

• Associate's Degree, Bachelor's Degree, Technical Certificate, or equivalent electrical field experience.
• Basic understanding of electrical systems, substations, transformers, and power distribution equipment.
• Ability to read electrical drawings and schematics.

Technician II

• Minimum 1+ years of electrical testing, commissioning, maintenance, or field service experience.
• Experience with transformer testing, relay testing, switchgear, and breaker testing.
• Knowledge of electrical calculations and power systems.

Technician III

• Minimum 3+ years of progressive experience in electrical testing and commissioning.
• Experience performing advanced relay testing and commissioning activities.
• Proven troubleshooting and root cause analysis capabilities.
• Ability to lead testing projects independently.

Senior Technician

• Minimum 5+ years of experience in high-voltage testing and commissioning.
• Demonstrated leadership experience managing crews and projects.
• Expert knowledge of substation equipment, protective relays, commissioning, and electrical testing.

Preferred Experience

• Protective Relay Testing
• SEL, ABB, Siemens, or GE Relays
• Doble, Omicron, Megger, or similar testing equipment
• Substation Commissioning
• Utility, Renewable Energy, or Industrial Power Projects
• SCADA Systems
• Power Transformers
• Circuit Breakers
• Medium- and High-Voltage Switchgear
• NETA, NICET, or comparable certifications

Skills

• Substation Testing
• Electrical Commissioning
• Protection & Control (P&C)
• Relay Testing
• High Voltage Systems
• Electrical Troubleshooting
• Root Cause Analysis
• Transformer Testing
• Switchgear Testing
• Circuit Breaker Testing
• Power Systems
• Utility Infrastructure
• Electrical Safety
• NFPA 70E
• Transmission & Distribution (T&D)

Additional Requirements

• Valid driver's license.
• Ability to travel extensively, including overnight travel.
• Ability to work outdoors in varying weather conditions.
• Ability to lift up to 50 pounds and work in industrial environments.
• Ability to pass background screening and drug testing requirements.

Locations

Multiple locations available throughout the United States.

Compensation

Competitive compensation, overtime opportunities, comprehensive benefits package, and strong career growth potential.

Desired Skills and Experience

• Electrical Testing
• Commissioning
• Substation Maintenance
• Substation Commissioning
• Protection & Control (P&C)
• Protective Relays
• Relay Testing
• Relay Calibration
• Electrical Troubleshooting
• High Voltage Testing
• Power Systems
• Power Distribution
• Switchgear
• Circuit Breakers
• Power Transformers
• SCADA
• Electrical Engineering Technology
• Field Service Engineering
• Utility Industry
• Transmission & Distribution (T&D)
• Electrical Safety
• NFPA 70E
• Omicron
• Doble
• Megger
• Root Cause Analysis
• Preventive Maintenance
• Electrical Commissioning
• Industrial Power Systems
• Electric Utilities