Field Service Technician III

Job Description

Job Description

This role involves nationwide travel across the U.S., depending on project needs.
The majority of projects are currently located in Texas.
While our office is located in Plano, TX, we are specifically looking for candidates based in West Texas area for easier mobilization.

Job Title: Field Service Technician III

Position Summary:
We are seeking an experienced Field Service Technician III (FST3) to serve as an onsite lead responsible for executing and coordinating complex maintenance and repair activities for BESS, inverters, and power systems. This role bridges the gap between technicians and engineers and plays a key leadership role onsite. This is a W-2 position with variable hours.

Responsibilities

• Site Support & Execution:
• • Support installation, commissioning assistance, and onsite inspections for BESS, inverters, and power equipment.
  • Perform troubleshooting and fault diagnostics, transitioning from guided support to independent problem-solving.
  • Execute rework tasks such as harness replacement, board swaps, and cooling system maintenance according to SOPs.
  • Accurately collect site data, photos, and maintain daily activity logs.
• Safety & Compliance:
• • Strictly follow company and client safety requirements, including PPE, LOTO, and electrical safety protocols.
  • Participate in daily job briefings and hazard assessments.
  • Immediately report any safety risks or abnormal conditions.
• Team Coordination:
• • Collaborate effectively with the onsite team and maintain professional communication with supervisors and site personnel.
  • Prepare basic documentation, including daily reports and checklists.
  • Promptly communicate technical issues, progress, and delays to internal and external stakeholders.

Qualifications

• Minimum Requirements:
• • High school diploma or equivalent.
  • 3+ years of experience in electrical, mechanical, industrial, solar, BESS, construction, or related fieldwork.
  • Ability to travel extensively (70%-100%) nationwide.
  • Valid driver's license.
  • Ability to lift 50 lbs or more.
  • Basic electrical or mechanical aptitude with the ability to read SOPs, checklists, and basic diagrams.
  • Proficiency with common tools and safe operation practices.
• Preferred Qualifications:
• • OSHA 10/30, NFPA 70E, or relevant electrical certifications.
  • Experience on utility-scale sites (solar, BESS, heavy electrical).
  • Basic electrical measurement experience (voltage/current testing).
  • Experience operating forklifts or skid steers.
  • Veterans and those with trade-skill backgrounds are encouraged to apply.

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Equal Opportunity Employer Statement BEST is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Company DescriptionBEST is a trusted global leader delivering innovative services for Battery Energy Storage Systems (BESS), inverters, and Power Conversion Systems (PCS) — supporting customers across North America, South America, the Middle East, and Africa.

Headquartered in Dallas, Texas, BEST provides professional commissioning, maintenance and troubleshooting services dedicated to ensuring safety, reliability and efficiency.

With a growing presence across the globe, our team of more than 200+ certified professionals have successfully completed more than 400 projects serving more than 20 GWH of energy storage capacity in 2 years. Committed to excellence, we are ready to provide efficient, secure, and trustworthy solutions for energy projects worldwide.

Company Description

BEST is a trusted global leader delivering innovative services for Battery Energy Storage Systems (BESS), inverters, and Power Conversion Systems (PCS) — supporting customers across North America, South America, the Middle East, and Africa.\r\n\r\n\r\n\r\nHeadquartered in Dallas, Texas, BEST provides professional commissioning, maintenance and troubleshooting services dedicated to ensuring safety, reliability and efficiency.\r\n\r\n\r\n\r\nWith a growing presence across the globe, our team of more than 200+ certified professionals have successfully completed more than 400 projects serving more than 20 GWH of energy storage capacity in 2 years. Committed to excellence, we are ready to provide efficient, secure, and trustworthy solutions for energy projects worldwide.