TAR

Role Description 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. - Translate architecture into single-lines. - Interrogate the grid-forming PCS and BESS down to the control level. - Validate that the integrated plant holds frequency and voltage on its own with no utility behind it. - 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. - Equity: $100-200K/year at TAR's most recent valuation. - Up to $15K relocation bonus. - Unlimited PTO. - Health, Dental, Vision insurance. - $1K monthly stipend for meals.

Role Description You are the technical owner of TAR's electrical architecture for behind-the-meter microgrids powering AI data centers in West Texas. You set the single-line design, make the architecture calls (AC/DC coupling, overbuild, protection philosophy, grid-forming strategy), and direct our Engineer of Record and external consultants. You own the electrical domain from pilot through to multi-GW buildouts. This is a hands-on role. Responsibilities - Own system architecture for fully islanded BTM microgrids (solar + BESS + gas peakers on a continuous IT load): SLDs/three-lines, basis-of-design, and the Owner's Technical Requirements EPCs bid against, and the drawings where you catch the OE's and EPC's mistakes. - Define the MV collection and skid-block architecture (34.5 kV) as a repeatable product, not a one-off per site, and own sizing across the hybrid: DC:AC, PCS, BESS power/energy and augmentation, transformer MVA, conductor. - Own microgrid controls across device, plant, and site levels (dispatch against a flat load, GFM-BESS/genset load-sharing and handoff, droop vs. isochronous, ramp/curtailment, black-start), plus SCADA, metering, telemetry, and the site's OT cyber posture. - Define the electrical path from MV bus to white space / customer POD, own the scope boundary and interface with the offtaker, and set the reliability architecture to a defined uptime target: N+1, concurrent maintainability, SPOF analysis, and the UPS-vs-GFM ride-through call. - Lead the studies for a 100% IBR island: protection coordination, fault current, and grounding under GFM constraints (limited fault current, anti-islanding moot); EMT and dynamic stability in PSCAD/EMTP (control interactions, sub-synchronous resonance, harmonics/IEEE 519); and grid-forming validation with the OEM (model validation, controller-HIL, ride-through, dynamic response). - Specify and evaluate inverters (PCS), BESS, transformers, switchgear, and BOP, including the power electronics requirements; drive vendor selection toward FEOC-clean, ITC-eligible gear; and write specs for long-lead items with the safe-harbor begin-construction deadline (Jul 4) driving procurement. - Direct the EOR and design consultants (set scope, review deliverables, hold schedule and quality; you decide, they stamp), run constructability and commissioning with EPC and the OE/IE (FAT/SAT, energization sequencing, witness-and-sign), and feed permitting and interconnection the electrical inputs they need. - Own electrical capex and $/W (design-to-cost across the hybrid, the cost case for standardization) and build the in-house electrical team as the program scales. Qualifications - BSEE; 10+ years in utility-scale solar, BESS, or generation, with direct ownership of single-lines and system architecture (not just reviewing others' work). - Deep power systems fundamentals: load flow, short-circuit, protection coordination, grounding, arc flash. - Hands-on experience with grid-forming inverters and BESS PCS; able to interrogate OEM control behavior, not just read datasheets. - Track record managing an EOR or design consultants and owning the design intent across the V's. - Fluency in MV/HV collection and substation design for 100 MW-class plants. - PE strongly preferred (you set direction even if the EOR stamps). - Comfort in a fast, ambiguous, first-of-a-kind environment; bias to decisions over process. Nice to have - Behind-the-meter / islanded microgrid or off-grid generation experience. Benefits - Total compensation: $440-760K/year. - Base salary: $240-320K. - Milestone bonus: 10-20% of base. - Equity: $175-375K/year at TAR’s most recent valuation. - Up to $15K relocation bonus. - Unlimited PTO. - Health, Dental, Vision insurance. - $1K monthly stipend for meals.