Electrical High Voltage/Low Voltage Field Service Technician III

Trystar; Houston (TX); On-site; USD 65,000 - 85,000; Full time

Job summary

Trystar is seeking a Field Service Technician III in Houston, Texas. This role is vital for high-level field operations including complex commissioning and maintenance of electrical systems.

Ideal candidates will have over 4 years of experience and must demonstrate strong troubleshooting skills. The position involves leadership, customer interaction, and adherence to safety standards.

If you thrive in a fast-paced environment and excel in teamwork, this role is for you.

Qualifications

• 4+ years of field service or equivalent experience.
• Must have expert-level troubleshooting skills in electrical systems.
• Ability to lead and mentor less experienced technicians.

Responsibilities

• Serve as person-in-charge for large-scale commissioning and retrofit projects.
• Lead troubleshooting and maintain electrical systems.
• Manage critical customer interactions and ensure compliance with safety standards.
• Train and mentor Level 1 and Level 2 technicians.

Skills

Expert-level troubleshooting across electrical systems

Deep understanding of power systems and testing methodologies

Strong leadership and mentoring capabilities

Advanced analytical and problem-solving skills

Ability to interpret complex schematics and specifications

Proficiency with electrical testing equipment

Team player

Intermediate/advanced computer skills

Excellent communication and organizational skills

Education

Electrical Apprentice, Electrical Journeyman, CET, EIT, ASCT required

Job description

Field Service Technician III

Trystar is a leader in power inverters, distribution equipment, and related services at the heart of supporting our electrical infrastructure. Our team members focus on producing the highest quality products in the industry and providing industry-leading service. Safety and integrity are our guiding principles, and we work together to achieve excellence for our customers every day.

Trystar’s team members are our most important asset, and this position plays a critical role in achieving our strategic objectives. As a Field Service Technician II, you will be a senior technical leader responsible for complex field operations, major commissioning activities, and mentoring the service organization. This role will work directly with customers and installers in the field and provide various field service activities for Trystar’s offerings from commissioning, planned maintenance, equipment upgrades, troubleshooting, and repair.

We are looking for people who believe in our guiding principles and values of:

• Safety – We believe everyone should leave Trystar facilities in the same or better condition than when they arrived.
• Integrity – We’re honest, transparent, and committed to doing what’s right.
• Customer focus – We have relentless focus on our customers and their success.
• Right with speed – We use good judgement, make thoughtful decisions quickly, and execute them with purpose and intensity.
• Play for each other – We’re a team. We show up for each other and we know that through teamwork we achieve greatness.
• Champion change – We know adaptation and improvement are requirements to survive and to thrive.
• Enjoy the journey – We create an environment where our team feels appreciated and has fun along the way.

In this role you will get to:

• Serve as person-in-charge for large-scale commissioning, startup, and complex retrofit projects
• Lead troubleshooting and work on and maintain high, medium, and low voltage systems
• Service, maintain, repair, assemble, troubleshoot and commission electrical apparatus and protective devices
• Perform advanced diagnostics and root cause analysis
• Analyze test data and produce detailed technical reports
• Lead multi-resource service projects and coordinate field activities
• Train and mentor Level 1 and Level 2 technicians
• Support engineering with field data, system validation, and continuous improvement efforts
• Operate various types of electrical test equipment, analyze test data and compile technical reports
• Manage critical customer interactions and high-visibility service events
• Ensure compliance with safety standards and operational procedures
• Assist engineers in data collection, completion of power system studies, site inspections, equipment design, project scope development
• Maintain positive client relationships through on-site interactions

Scope and Autonomy

• Full ownership of complex and high-risk field service activities
• Leads teams and multi-day service projects
• Acts as escalation point for technical decision‑making

Job Requirements

• Expert-level troubleshooting across electrical systems
• Deep understanding of power systems and testing methodologies
• Strong leadership and mentoring capabilities
• Advanced analytical and problem-solving skills
• Ability to interpret complex schematics and specifications
• Proficiency with electrical testing equipment
• Must be a team player, willing to work with others in a fast-paced environment
• Intermediate/advanced computer skills
• Excellent communication, problem solving, and organizational skills
• 4+ years of field service or equivalent experience
• Electrical Apprentice, Electrical Journeyman, CET, EIT, ASCT required