You will work on new aircraft development in a lean, high-ownership culture where you directly shape the product and operate at a velocity to fly new designs within months, not years.

In this role, you will design, develop, and integrate a high-performance hybrid-electric propulsion system into the Omen air vehicle. You will own and design powertrain components from concept through production, optimizing for the unique demands of a tail-sitter platform including VTOL operations, efficient cruise flight, and rapid transition between flight modes.

As a Principal Powertrain Engineer, you will work closely with program leadership and cross-functional teammates to deliver a high-performance, reliable propulsion solution. You will drive component selection, manage supplier relationships, lead testing and validation efforts, and ensure the powertrain meets performance, weight, thermal, and reliability requirements.

This is a hands-on role where you will tackle hard technical problems, mentor junior engineers, and play a critical role in bringing a groundbreaking aircraft platform to operational reality. You will be a trusted subject matter expert in the design and development of our powertrain.

Join our dynamic team and help us build the next generation of autonomous flight systems.

Key Responsibilities:

• Own the design of hybrid-electric propulsion systems including motors, generators, battery packs, fuel systems, power electronics, and propeller/rotor integration

• Electric machine sizing and design, transmission sizing and design, inverter sizing and design, and how the full system integrates into the air vehicle.

• Conduct powertrain performance analysis, thermal modeling, and energy optimization studies to meet mission requirements for endurance, payload capacity, and operational envelope

• Lead the development and execution of test plans for powertrain subsystems and full-up systems, including ground test stands, HILs, and flight test

• Define and validate technical performance measures including power, efficiency, thermal limits, and fault tolerance across all operating modes

• Create detailed technical specifications and interface control documents for powertrain components and assemblies

• Collaborate with the Airframe and Vehicle Controls teams for solutions on system packaging, structural/thermal interfaces, and thrust/power control architectures

• Conduct design reviews, perform requirements analysis, and plan system verification to ensure compliance with project goals and industry standards

• Establish and manage supplier relationships for critical powertrain components, including technical requirements definition, design reviews, and qualification oversight

Required Qualifications:

• High-ownership and a bias toward action – if you see a problem, you want to fix it

• Bachelor's degree in Aerospace Engineering, Mechanical Engineer, Robotics, Physics, or related technical discipline

• Minimum of 12+ professional years in technical leadership roles such as a Principal Engineer, Chief Engineer, or similarly relevant position focused on propulsion systems

• Experience in engineering team leadership and project execution for aerospace, automotive, or defense sectors with focus on electric or hybrid propulsion

• Proficiency in powertrain engineering skillsets including electric motors, transmissions, generators, power electronics, battery systems, and thermal management

• Hands-on experience with propulsion system development, testing, and integration for aerospace platforms

Preferred Qualifications:

• Direct experience developing hybrid-electric or electric propulsion systems for aircraft, rotorcraft, eVTOL, or UAS platforms

• Proven track record leading propulsion systems through full qualification campaigns from early development through flight test and production

• Experience with propulsion system modeling and simulation tools

• Familiarity with aviation environmental and EMI standards (MIL-STD-810, MIL-STD-461, DO-160, or equivalent) and qualification campaigns for flight hardware

• Experience with Formula SAE, Baja SAE, Design Build Fly, or similar competitive engineering programs demonstrating hands-on vehicle integration experience

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Key responsibilities include:

• Supporting system integration of RF hardware, software, and platform-level components (air, land, sea, or space)
• Planning and executing test & evaluation (T&E) activities, including lab and field testing
• Generating and maintaining technical documentation, requirements, and verification artifacts
• Meeting with clients and stakeholders to identify, gather, and document technical requirements
• Analyzing project technical features, creating diagrams, and building models to define system behavior
• Ensuring that requirements are correct (validation) and that the final system meets those requirements (verification)
• Maintaining traceability of requirements from design to testing to prevent scope creep
• Working with software, RF, hardware, and project management teams to align design with user needs

Required qualifications include:

• A bachelor's degree in Systems Engineering, Computer Sciences, Physics, or a related field
• Experience with simulation tools, modeling tools, and requirements management software
• A strong understanding of signal processing fundamentals (FFT, filtering, detection theory)
• Experience with modeling and simulation tools (e.g., MATLAB, Simulink, Python)
• Familiarity with RF test equipment (spectrum analyzers, signal generators, network analyzers)
• The ability to obtain and maintain a U.S. security clearance

To conform to U.S. Government export regulations, applicants must be a U.S. citizen, green card holder, or be eligible to obtain the required authorizations from the U.S. Department of State.

What we offer includes:

• A competitive salary, stock options, and benefits, including health, vision, and dental
• 401K enrollment at 90 days
• Generous PTO + most federal holidays observed
• A collaborative and inclusive work environment
• Access to the latest tools and technologies
• High levels of responsibility and autonomy
• Professional growth and development opportunities
• Access to the hardest problems in electronic warfare

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Responsibilities:

• Architect power delivery systems for data center and super compute platforms, including multiphase VRMs and Intermediate Bus Converters (IBCs).
• Architect low voltage, high current (500A-1000A+) power rails for LPU, GPU and accelerator modules.
• Apply control theory principles to optimize power converter performance, stability, and transient response.
• Select and characterize power components including MOSFETs, inductors, transformers, and magnetic devices using vendor tools and configuration GUIs.
• Collaborate with ASIC and package teams to ensure power integrity across high-density PCB builds.
• Develop and complete lab validation plans using oscilloscopes and other test equipment.
• Build automation scripts to improve characterization efficiency and data analysis.
• Collaborate with power management ICs via I2C, SPI, and PCIe protocols for system integration and debug.
• Work with cross-functional teams including mechanical, thermal, firmware, and silicon build engineers.

Requirements:

• BS or MS in Electrical Engineering (or equivalent experience) with focus on power electronics.
• 5+ years of experience crafting power systems for data center, super compute, or high-performance computing applications.
• Deep expertise in multiphase VRM development and Intermediate Bus Converter (IBC) topologies, and control theory as applied to power converters.
• Hands-on experience with high-current (500A-1000A+) low voltage power delivery systems.
• Proficiency with Cadence tools for power integrity analysis and simulations, and experience with high-density PCB build and layout considerations.
• Familiarity with communication interfaces: I2C, SPI, PCIe.
• Proficient with scripting languages (Python, Perl) and Linux environment.
• Strong hands-on lab skills with oscilloscopes and power measurement equipment.
• Clear and effective communication skills, both written and verbal.

Preferred Qualifications:

• Experience with AI accelerator power delivery for platforms such as TPU, GPU, or similar architectures.
• Knowledge of advanced magnetic component build and optimization for high-density applications.
• Experience with power modeling and simulation tools.
• Background in EMI/EMC compliance and mitigation techniques.
• Proven track record in bringing power solutions from concept to mass production with experience collaborating with external vendors and suppliers.

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What you'll do

Take an active, hands-on role in the development of On-Board Charger systems

Support system engineering activities from concept to SOP

Define, manage, and maintain system requirements & specifications

Design and align system architecture, interfaces, and integration concepts

Collaborate closely with hardware, software, and validation teams

Drive technical discussions with customers and support decision-making on OBC concepts and system-level trade-offs

Support problem analysis, root-cause investigations, and solution implementation

Contribute to robust, production-ready OBC solutions

What you need

• Bachelor’s degree in Electrical/Electronics/Controls/Mechatronics Engineering, and preferably, Master’s or PhD

• 2+ years of hands-on experience in OBC or AC/DC power electronics systems

• Series development & SOP experience in automotive projects

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