Engineer, Power Electronics & Microgrid
TAR
Posted about 6 hours ago
Mission
TAR’s mission is to power intelligence for the world. We are building the world’s first off-grid power plant for data centers powered by renewable technologies.
We firmly believe AI should be built in the US for the benefit of all people. For that, power must be fast, clean, and scalable. We are singularly focused on delivering GW-scale power faster than anyone has ever done, by rethinking every layer of the stack.
To deliver on this vision, TAR manufactures, deploys, and operates off-grid energy assets with a renewable backbone. We vertically integrate to solve every bottleneck, from racking systems to power electronics to dispatch algorithms to on-site construction.
Leave your mark by powering the future of civilisation-scale energy infrastructure.
We hire people who care deeply about this problem space. If that is you, please apply!
Company
We are a team of seasoned operators run by founders who previously scaled a company to over 80 people and $350M in annual sales. We know how to operate, and we move fast.
We are working directly with one of the largest compute providers to make our vision come true and plan to deploy 5GWs by 2028.
TAR is both a hardware and software company, we are building out massive, critical, physical infrastructure.
We operate on…
High ownership. High Agency. Own project end-to-end. Great people don’t need to be managed.
Speed. We achieve great things on incredible timelines. We always push ourselves to go faster.
First principles. No ego. No hierarchy. Challenge every assumption.
Passion. Solving the energy problem is one of the largest challenges that faces the world now and in the future. We put in long hours and hard work to solve this.
About the role
TAR builds fully islanded, behind-the-meter microgrids (solar, BESS, and gas peakers) powering AI data centers in West Texas at record speed. As Engineer, Power Electronics & Microgrid, you are the hands-on owner of how the power electronics actually behave in an islanded, inverter-dominant system.
You translate architecture into single-lines, interrogate the grid-forming PCS and BESS down to the control level, and validate that the integrated plant holds frequency and voltage on its own with no utility behind it. You drive the day-to-day electrical engineering under the Director of Power Systems Engineering.
One note on scope: today we integrate utility-scale OEM equipment rather than design power converters at the silicon level. We need someone who understands converter internals well enough to push OEMs hard on grid-forming behavior, ride-through, and protection, not someone who wants to lay out gate drivers.
Responsibilities
Create and maintain electrical single-line and three-line diagrams, wiring schedules, and system schematics for islanded BTM microgrids.
Own the power electronics integration: specify, evaluate, and validate grid-forming inverters and BESS PCS. Model and verify GFM control behavior, fault response, ride-through, and inverter-to-inverter interactions in an IBR-dominant plant with limited fault current.
Run and review islanded power-system studies: load flow, short-circuit, protection coordination, grounding, and transient/load-step stability for a continuous high-density IT load.
Size conductors, OCPD, disconnects, and switchgear across MV/LV and DC collection in compliance with NEC, UL 1741-SB, UL 9540/9540A, and NFPA 855.
Coordinate with the Engineer of Record: produce the technical inputs and basis-of-design that feed their stamped package, and pressure-test their deliverables.
Drive OEM technical engagement on PCS, BESS, and controls. Track FEOC-clean equipment options where ITC eligibility is at stake.
Support permitting, interconnection, and the OE/IE with the electrical analysis they require.
Write commissioning and validation test plans. Support bring-up, acceptance testing, and field troubleshooting at the pilot and beyond.
Qualifications
BSEE, power systems, or related STEM discipline.
3+ years in utility-scale solar, BESS, or power electronics, with hands-on ownership of SLDs and power-conversion integration.
Proficiency in electrical CAD (AutoCAD Electrical, SKM, ETAP, or similar) for one-line and study work.
Working knowledge of grid-forming vs. grid-following inverter architecture and BESS PCS behavior. Able to read control specs critically, not just datasheets.
Strong NEC, UL, and NFPA 855 knowledge for PV, DC coupling, and energy storage integration.
Experience with islanding controls, microgrid EMS, inverter/PCS integration.
Comfort modeling islanded systems, transient load response, and short-circuit/coordination studies.
Extreme attention to detail with a bias for speed and rapid iteration.
Preferred
MSEE with a power electronics or microgrid focus.
Direct islanded, off-grid, or BTM microgrid experience.
Hardware-in-the-loop (HIL) validation of inverter and BESS controls.
High-growth startup or aerospace/automotive test-like-you-fly culture. Experience from Tesla Energy, Fluence, Array, Nextracker, or comparable.
Salary and Benefits
Total compensation: $280-470K/year.
Base salary: $165-225K.
Milestone bonus: 10-20% of base.