Field Engineer - Battery Energy Storage

ON.energy is building the power infrastructure that makes the AI era possible. As AI demand surges past what the grid and traditional data centers can support, ON.energy provides a new class of power technology proven at gigawatt scale and trusted by the world’s leading cloud and AI companies. Our systems are already deployed across 2.5 GW of hyper-scale campuses, validated by top U.S. national labs, and certified for grid-safe operation by major utilities. With real products in the field, we’re scaling faster than the grid can, transforming power from a bottleneck into a competitive advantage for the companies building the future.

Location: Amarillo, TX (Project-Based, On-Site)

About On Energy Storage

On Energy Storage designs, deploys, and operates advanced Battery Energy Storage Systems (BESS) supporting commercial, industrial, and utility customers across the Americas. Our engineering team drives high-quality, technically rigorous project execution across interconnection, site design, and protection & control systems. We prioritize speed, accuracy, and operational reliability in every project.

Position Summary

On Energy Storage is seeking an experienced Field Engineer to support the construction and commissioning of a utility-scale BESS project in Amarillo, TX. This is a full-time, on-site role embedded within the project team. The Field Engineer will serve as the primary technical resource for the EPC contractor and commissioning teams, providing real-time electrical and mechanical guidance, resolving field issues, and ensuring that installation activities align with On Energy Storage's engineering standards, design documents, and applicable codes. The ideal candidate brings a strong electrical engineering background with hands-on experience supporting field construction and commissioning activities on power systems or energy storage projects.

Key Responsibilities

- Serve as the on-site technical point of contact for the EPC contractor.

- Interpret engineering drawings and support field installation teams.

- Review and resolve RFIs with the engineering team.

- Monitor installation for compliance with design and codes.

- Identify and resolve field discrepancies.

- Document and share lessons learned on equipment being installed.

- Support FAT and SAT activities.

- Maintain field reports and documentation.

- Coordinate with engineering and EPC teams.

- Participate in meetings and safety reviews.

- Verify equipment installation compliance.

- Support punch list and project closeout.

Qualifications

- Bachelor's degree in Electrical Engineering or related field.

- 3-5 years of relevant experience.

- Strong understanding of electrical systems.

- Ability to read electrical drawings.

- Knowledge of NEC, IEEE, NFPA.

- Troubleshooting and communication skills.

- Proficiency in Microsoft Office and Procore.

- Ability to work on-site in Amarillo, TX.

Preferred Qualifications

- Experience with BESS systems.

- EPC or infrastructure project experience.

- Commissioning and QA/QC familiarity.

- Bluebeam experience.

- SCADA/EMS exposure.

- EIT or PE certification preferred.

For US-based roles - What you’ll get:

• Competitive salary annual performance-based bonus eligibility
• Medical, dental, and vision insurance
• 401(k) with company match
• Paid time off and company holidays 

For Mexico-based roles - What you’ll get:

• Competitive salary annual performance bonus eligibility
• Christmas Bonus (Aguinaldo): 30 days
• Major medical expenses and life insurance
• Paid time off and holidays (per local policy)

For all roles:

• Professional development and growth opportunities
• Opportunity to grow with a mission-driven team shaping the future of clean energy
• Equal Opportunity: ON.energy is committed to equal employment opportunity and to maintaining a work environment free of harassment, discrimination, or retaliation.
• Accommodations: If you need an accommodation during the application process, email recruitment@onenergystorage.com
• Benefits vary by role and location and are subject to change.