Field Service Technician - LV/MV Switchgear, ATS, UPS, PLCs

Liberty Personnel Services, Inc.; Castroville (TX); On-site; USD 65,000 - 95,000; Full time

Job summary

Liberty Personnel Services, Inc. is seeking a Field Service Technician to perform on-site troubleshooting, maintenance, and repair of LV/MV switchgear, transformers, ATS, UPS, PLCs, and related power equipment.

This role requires 3–5 years of hands-on experience with electrical systems and industrial controls. You will conduct system diagnostics, address technical issues to minimize downtime, support system startups and commissioning, and ensure installations meet customer specifications.

Qualifications

• 3–5 years of hands-on field service experience in power systems or industrial controls.
• High school diploma; associate degree preferred; NFPA 70E/OSHA 30 certifications a plus.
• Proficient in diagnosing and repairing LV/MV electrical equipment and transformers.
• Excellent communication to explain issues to customers and document work.
• Ability to work independently and manage priorities in a fast-paced setting.

Responsibilities

• On-site troubleshooting, maintenance and repair of electrical systems including transformers, LV/MV switchgear, and PLC controls.
• Conduct system diagnostics and address issues to minimize downtime.
• Support startups and commissioning to ensure systems meet customer specifications.

Skills

SCADA

PLC maintenance

Electrical troubleshooting

Field service software

ERP systems

Microsoft Excel

Customer communication

Independent work

Education

High school diploma

Associate degree in electrical engineering or related field

NFPA 70E / OSHA 30 certifications a plus

Tools

ERP Software

Microsoft Office

SCADA

Job description

Field Service Technician - LV/MV Switchgear, ATS, UPS, PLCs

• Perform on-site troubleshooting, maintenance, and repair of electrical systems and equipment, including transformers, circuit breakers, LV/MV switchgear, and PLC controls.
• Conduct system diagnostics and address technical issues to ensure minimal downtime and efficient system operation.
• Support system startups and commissioning, ensuring systems are operational and meet customer specifications.

Education:

• High school diploma or equivalent required; associate’s degree in electrical engineering or a related field is preferred.
• Certifications such as NFPA 70E, OSHA 30, or other relevant technical certifications are a plus.

Experience

• 3-5 years of hands-on experience as a field service technician, with a focus on power systems, electrical equipment, or industrial controls.
• Experience with basic troubleshooting, maintenance, and repair of electrical systems, transformers, and circuit breakers.
• Strong troubleshooting and problem-solving skills.
• Proficiency with field service management software, ERP systems, and Microsoft Office (Excel, Word).
• Good communication skills and the ability to explain technical issues clearly to customers.
• Ability to work independently and manage service priorities in a fast-paced environment.
• Experience with electrical systems at low and medium voltage levels.
• Basic experience with PLCs, SCADA systems, and protective relay systems is a plus.

You Should Be Proficient In

• Electrical Installation
• Electrical Troubleshooting
• Electrical Repair
• OSHA 10-Hour Certification (OSHA 10)
• Relay Testing
• SCADA Experience
• Field Service Readiness
• Microsoft Excel

Machines & Technologies You'll Use

• SCADA
• ERP Software