Senior Electrical Engineer in Phoenix

Senior Electrical Engineer - Battery Energy Storage Systems Job Title

Senior Electrical Engineer – Battery Energy Storage Systems (BESS)

Phoenix, AZ

Engineering

Full-Time | Exempt

GTI designs and manufactures modular energy infrastructure supporting battery energy storage, power , and modular data centers. Our BESS platforms integrate battery systems, inverters, transformers, protection devices, and monitoring systems into factory-built modular power systems deployed for utility-scale and commercial energy storage applications.

GTI is seeking a Senior Electrical Engineer to lead the electrical architecture and schematic development of modular Battery Energy Storage Systems. This role designs electrical distribution, protection schemes, control systems, and equipment interfaces that integrate battery modules, PCS inverters, transformers, switch gear, and monitoring systems.

• Design electrical architectures for BESS platforms including AC and DC power distribution systems
• Develop single line diagrams, wiring diagrams, schematics, and cable schedules
• Integrate battery systems, battery management systems (BMS), PCS inverters, transformers, and switch gear
• Define grounding strategies, protection schemes, and isolation methods for high-power systems
• Support designs aligned with UL 9540 energy storage system certification frameworks
• Develop monitoring, alarm, and shutdown logic supporting safe battery operation
• Coordinate electrical design with mechanical layouts and enclosure constraints
• Support commissioning, FAT testing, and troubleshooting of energy storage systems
• Identify electrical risks including fault current, protection coordination, and thermal impacts
• Develop production-ready electrical documentation supporting manufacturing and integration

• Bachelor’s degree in Electrical Engineering
• 8+ years of experience designing industrial electrical systems or power infrastructure
• Experience with power distribution, protection systems, and electrical schematics
• Experience integrating inverters, transformers, switch gear, or energy storage equipment
• Strong documentation discipline supporting production engineering environments

• Experience with battery energy storage systems or microgrid power systems
• Familiarity with UL 9540, UL 1741, and energy storage safety frameworks
• Experience integrating SCADA, EMS, or energy monitoring systems

GTI promotes a diverse and inclusive workforce and is an Equal Opportunity Employer that does not discriminate against employees or applicants for employment on the basis of , , , ancestry, , religion, , , , expression, , physical or mental , medical condition, genetic information, military or veteran status, marital status, or any other Federal or State legally-protected classes. We also value the safety of all employees and work hard to maintain a Drug Free Workplace.