Power Electronics Engineer

About Us Chariot Defense is a defense technology company that designs and manufactures a family of power products for the U.S. military and its allies. We believe that credible deterrence of armed conflict and winning if deterrence fails, requires more than just the best drones, sensors, weapons, electronic warfare systems, and command & control capabilities. Those critical components will require sustained electric power in austere and resource-constrained environments. Moreover, military units must be able to turn off the trucks and generators that generate this power to hide and survive. In other words, power generation must be decoupled from power consumption. Chariot Defense’s products enable exactly this capability, allowing U.S. and allied militaries to be more lethal and survivable. We hope you will join us on this mission. About the Role Power is the product. We're looking for a power electronics engineer who can own the electrical architecture of our power, conversion and energy systems, both on energy storage and vehicle/ automotive mobility from DC/DC and DC/AC conversion, protection and isolation circuits, and power distribution and management. You'll be one of the first power electronics hires and will directly shape what goes into our products across multiple platforms and sectors. This is a high-ownership, high-impact, highly interdisciplinary, prototype-to-production role at a company where the hardware actually matters. Key Responsibilities Own full-cycle design of power electronics subsystems: DC/DC and DC/AC converters, protection logic, and power distribution units, managing low voltage and high voltage systems, as well as AC circuits. Design and incorporate: Next-generation GaN and SiC inverter systems for high-efficiency power conversion, using advanced power control schemes Design for: Low electromagnetic signature by minimizing conducted and radiated emissions to meet MIL-STD-461 requirements; this is core to our product, not an afterthought Develop schematics: Oversee PCB layout using Altium or equivalent, with particular attention to power density, thermal management, and EMI mitigation at the board level for DC and AC systems Hardware Bring-up: Write and execute hardware bring-up, verification, and validation test plans; operate lab equipment including oscilloscopes, electronic loads, power analyzers, current probes, and thermal cameras Define and execute testing: Including environmental and qualification testing (thermal cycling, vibration, shock) in coordination with the mechanical team Collaborate closely with mechanical engineers: on component integration, PCB placement within enclosures, connector and harness selection, and thermal path design Support firmware and software engineers: with electrical specifications for power management and control firmware Travel to test sites: (military and non-military) and military exercises to see your hardware operate in real conditions, and engage closely with global suppliers. What We’re Looking For Top-notch engineering intuition and first principles thinking toward designing complex products that function seamlessly for your customer, taking both an engineering/ technical, and product/ customer approach, to strike the optimal balance. Able to independently identify critical information or priority gaps and apply effort toward closing those gaps. Undaunted by imperfect, incomplete or absent datasets or information, and capable of making sound, comprehensive, and swift first-principled decisions to achieve a product end-state that meets and/or exceeds the need of the hour. Not satisfied by superficial explanations of a problem or “band-aid engineering”; seeks persistently to find the specific root cause through data-driven methods, and resolve failures or recurring issues, so they can be mitigated to prevent future such instances. Gratified by helping your peers succeed, building a robust team culture, and propagating deep camaraderie amongst your peers.