Senior Electrical Engineer - Power Electronics

Hermeus•Los Angeles, CA

About The Position

Hermeus is a venture-backed defense aviation company focused on rapid iterative prototyping to build the fastest aircraft in the world. We are seeking a Senior Power Electronics Electrical Engineer to develop electrical power architectures and components for next-generation supersonic and hypersonic aircraft. This role involves end-to-end ownership of flight hardware and ground support systems, collaboration with cross-functional teams, mentoring junior engineers, and contributing to engineering standards. The position offers a hands-on, fast-paced environment focused on rapid prototyping, iterative testing, and solving complex technical challenges.

Requirements

BS Electrical Engineering or Mechanical/Aerospace with significant industry experience working with development of electrical component & systems
5+ years of experience in multiple of the following areas: Battery design, motor controller design, harness design and fabrication, design for high EMI environments and appropriate mitigations, power conditioning, communication hubs/busses, bus converters, and PCB layout

Nice To Haves

Master’s degree in Electrical, Mechanical, Aerospace Engineering, or a related discipline.
Direct experience working with high-voltage DC systems and components (e.g., batteries, motors, generators).
Hands-on experience with HV systems, including proper safety procedures and precautions.
Strong working knowledge of aerospace systems engineering practices, including requirements development, verification and validation, component qualification and acceptance testing, system diagramming/modeling, and risk management.
Experience executing hardware test and certification campaigns.
Proficiency with relevant software tools and programming languages such as Python, Capital Harness, Siemens NX/Teamcenter, and Altium Designer.
Experience with simulation and test tools (e.g., Fluke process meters, ammeters, Simulink, ANSYS).
Familiarity with industry standards such as IPC-620, MIL-STD-810, MIL-STD-704, MIL-HDBK-516C, MIL-STD-464D, and DO-160G.
Demonstrated project experience designing high power (>5kw) electronic components and or distributed systems
Strong analysis and troubleshooting skills
Experience working with avionics devices and communication protocols (CAN bus, RS-422, ARINC 825) and connectors (e.g., D38999).
Strong ability to collaborate across mechanical and electrical engineering domains.
Proven experience contributing to engineering project teams in fast-paced environments.

Responsibilities

Own the electrical power architecture and components for new vehicle development from concept through implementation and testing.
Design and develop power electronics systems for supersonic and hypersonic aircraft applications.
Collaborate with cross-functional mechanical and electrical engineering teams to architect integrated vehicle power systems.
Support systems providing electrical, fluid, and mechanical power to critical aircraft components.
Serve as a technical bridge between electrical and mechanical engineering disciplines.
Design flight hardware as well as required ground support and test equipment.
Evaluate, select, and integrate commercial off-the-shelf (COTS) and custom hardware solutions.
Work directly with vendors and suppliers to identify and develop suitable components and systems.
Mentor junior engineers and help establish engineering standards, tools, and best practices across the team.
Support hands-on hardware assembly, integration, troubleshooting, and testing activities.
Participate in rapid prototyping, iterative development, and fast-paced build/test cycles.
Contribute to advancing propulsion and power system capabilities for next-generation hypersonic transport vehicles.