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Description VETERANS ARE ENCOURAGED TO APPLY The Senior Field Technician – Power Systems supports the startup, commissioning, testing, and troubleshooting of electrical power distribution systems at customer sites throughout the greater Houston, Texas area. This role serves as the on-site technical lead, working independently to execute complex field projects, ensure safe system energization, and deliver high-quality service to customers. The position requires regular local travel to multiple customer locations within Texas, though occasional extended hours may be necessary during critical commissioning or energization activities. Responsibilities: Lead startup, commissioning, and acceptance testing of electrical power systems, including medium-voltage switchgear, low-voltage switchgear, switchboards, motor control centers (MCCs), and variable frequency drives (VFDs). Perform advanced electrical testing, including insulation resistance, contact resistance, relay testing, primary injection testing, secondary injection testing, and functional verification. Conduct low-voltage and medium-voltage electrical acceptance testing and commissioning activities in accordance with project specifications and industry standards. Perform ground fault system testing, troubleshooting, and validation of protective schemes. Test, inspect, and verify the operation of switchgear, switchboards, MCCs, circuit breakers, protective relays, and associated power distribution equipment. Analyze test data, document results, identify deficiencies, and recommend corrective actions necessary for system acceptance and energization. Interpret complex one-line diagrams, schematics, and control logic. Diagnose and resolve system issues independently in the field. Serve as the on-site lead, coordinating with customers, contractors, engineers, and internal stakeholders. Make real-time decisions during system energization and project execution. Prepare complete, accurate, and customer-ready field service reports. Assist with project planning, scope review, and technical evaluation to support accurate project quoting and execution. Work closely with the Service Coordinator and Sales Team to help establish realistic project scopes, schedules, and customer expectations. Mentor and develop junior technicians, providing guidance and training in field operations. Ensure strict adherence to safety standards, including NFPA 70E and OSHA requirements. Support continuous improvement of field service processes and standards. Travel to customer sites as required to support project execution. Perform other duties as assigned by management. Requirements: 5–10+ years of experience in field service, commissioning, or electrical testing. Strong experience with medium voltage and low voltage power distribution systems. Proven ability to lead field projects independently. Advanced troubleshooting and diagnostic capability. Strong communication and leadership skills in field environments. Willingness to travel as required. Preferred Qualifications: NPFA 70E Experience aligned with International Electrical Testing Association (NETA) standards. NETA Certification (Level II–IV) preferred. Experience with protective relays and control systems. OEM training (Siemens, Eaton, Schneider, ABB). Journeyman or Master Electrician license. Physical Requirements and Work Environment This role requires regular standing, walking, climbing stairs and ladders, kneeling, bending, and working in industrial and outdoor environments, including electrical rooms, substations, and construction sites. The Senior Field Service Technician must be able to safely lift, carry, push, and pull tools and test equipment weighing up to 50 pounds independently on a regular basis. Occasional handling of heavier equipment may be required and is typically performed using mechanical assistance, carts, hoists, or team-lifting in accordance with company safety procedures and OSHA guidelines. The role requires the ability to wear appropriate personal protective equipment (PPE), including arc-flash protective gear, and to work extended hours during system startup, commissioning, and energization activities. Reasonable accommodations may be made to enable qualified individuals with disabilities to perform the essential functions of the position. Benefits: Medical, dental, life and vision insurance 401(k) Retirement Plan and Match Paid Time Off Specified Holiday Pay Flexible Spending Account Disclaimer: This job description is a general outline of the day-to-day duties to be expected and may not cover all job responsibilities that may be assigned by management. Ranger Field Services is an equal opportunity employer and does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age or other legally protected status.

What you’ll do

The Senior Field Technician leads the startup, commissioning, and testing of electrical power distribution systems at various customer sites. They are responsible for troubleshooting complex electrical issues, coordinating with stakeholders, and ensuring all work adheres to safety standards.

Requirements

Candidates must have 5-10+ years of experience in field service, commissioning, or electrical testing with expertise in medium and low voltage systems. Strong leadership, diagnostic capabilities, and the ability to travel to customer sites are essential for this role.

Benefits

• Medical insurance • Dental insurance • Life insurance • Vision insurance • 401(k) Retirement Plan • 401(k) Match • Paid Time Off • Specified Holiday Pay • Flexible Spending Account

Other relevant skills

Identified from the job description. Confirm important requirements above.

• Electrical power distribution
• Startup and commissioning
• Troubleshooting
• Medium-voltage switchgear
• Low-voltage switchgear
• Motor control centers
• Variable frequency drives
• Electrical testing
• Protective relay testing
• Primary injection testing
• Secondary injection testing
• Ground fault system testing
• Schematic interpretation
• Project leadership
• Safety compliance
• NFPA 70E
• Medium Voltage
• Industry Standards
• Time Off Management
• Project Implementation
• Power Distribution
• Safety Procedures
• Acceptance Testing
• Arc Flash
• Circuit Breakers
• Communication
• Contact Resistance
• Continuous Improvement Process
• Relays
• Control Systems
• Project Planning
• Electric Power Distribution
• Sales
• Field Service Management
• Leadership
• Switchgear
• Low Voltage
• Monitor Control Command Set
• Motor Control
• Electrical Safety In The Workplace (NFPA 70e)
• One-Line Diagram
• Operations
• Personal Protective Equipment
• Electric Power Systems
• Safety Standards
• System Testing
• Test Data Generation
• Troubleshooting (Problem Solving)
• Variable Frequency Drives
• Occupational Safety and Health Administration (OSHA)

Job areas

• Engineering
• Energy
• Trades
• Construction
• Manufacturing
• Field Technician
• Electrical Substation / Relay Repairer
• Electrical Line Installers and Repairers
• Electrical and Electronics Repairers, Powerhouse, Substation, and Relay