Senior Product Engineer

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 provides a new class of power technology proven at gigawatt scale and trusted by the worlds 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 were scaling faster than the grid can transforming power from a bottleneck into a competitive advantage for the companies building the future.

Were looking for a Senior Product Engineer to own the technical design specification and continuous improvement of our BESS and DC Cabinet product lines. This is a product role at its core: youll author technical specifications drive vendor engagement perform detailed component sizing and partner with project commissioning and O&M teams to close the loop between field experience and product design. You should have lived through full product development cycles and know how to bring engineering discipline into a fast-moving environment with frequent release cycles.

Product Definition & Specification

• Author and maintain detailed technical specifications for the BESS and DC Cabinet electrical mechanical environmental and interface requirements.
• Review and approve detailed engineering drawings: SLDs GAs schematics wiring diagrams panel layouts mechanical drawings and BoMs. Own the technical change baseline.
• Perform in-depth component sizing: fuses busbars cables contactors disconnects protection coordination short-circuit and arc-flash inputs and thermal sizing of cabinets (forced air / HVAC natural convection hot-spot analysis derating).

Vendor & Supply Chain Engagement

• Lead technical engagement with key vendors particularly on the DC Cabinet driving specs into RFQs evaluating vendor designs running design reviews and resolving issues through prototyping FAT and serial production.
• Qualify alternate suppliers and own the technical side of dual-sourcing and cost-down decisions.

Product Development

• Drive iterative product development cycles with the development team balancing speed with the rigor expected of mission-critical hardware.
• Capture design feedback from design reviews commissioning and O&M and convert it into prioritized changes on the product roadmap via a structured ECR/ECN process.
• Run trade studies on architecture and component selection where it matters cost reliability lead time performance.

Project & Commercial Support

• Support business development with technical proposals SLDs GAs and SOC analysis across multiple market applications.
• Compile and own the product technical information package handed to project engineering.
• Co-lead review and validation of BESS- and DC Cabinet-related topics during project execution.
• Maintain as-built drawings and the engineering document baseline.
• Participate in commissioning particularly for first-of-kind deployments and bring lessons learned back into the product.

• Bachelors degree in Electrical Engineering Power Electronics or a closely related technical field.
• 6 years of hands-on engineering experience in BESS power electronics UPS or comparable mission-critical / industrial power systems with clear evidence of ownership through full product development cycles.
• Proven product or system-level design experience on MWh-scale BESS or equivalent DC power equipment.
• Demonstrated experience taking a product through the full development cycle concept prototype FAT field deployment revision in an environment with frequent release cycles.
• Strong demonstrable skill in detailed component sizing: fuses cables busbars protection devices and thermal sizing for enclosed cabinets.
• Fluency producing and reviewing SLDs GAs schematics and panel layouts; comfortable in AutoCAD or equivalent E-CAD tools and reading mechanical drawings.
• Track record of running technical vendor relationships through design FAT and post-deployment.
• Excellent written communication specs design reviews change notices and the ability to translate between engineering project and commercial teams.
• Willing to travel up to 20%.

• Experience with data center / UPS / mission-critical power or utility-scale BESS.
• Familiarity with UL 9540 / 9540A and NFPA 855 plus the relevant codes for your target market.
• Experience with PLM tools and structured ECR/ECN workflows.

For US-based roles - What youll 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 youll 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: 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
• Benefits vary by role and location and are subject to change.