L

Long Wall

Produces hypersonic testbeds and defense interceptors

Principal Power Electronics Engineer

Full-Time
$168.9k - $256.9k/yr
Senior, Expert
Bachelor's, Master's, PhD
Long Beach, CA, USA
In PersonTravel up to 25% of the time is required.
Electrical EngineeringPower Systems Engineering

About the job

Requirements
  • A bachelor's degree in electrical engineering or a similar field and 10 or more years of relevant experience, or a master's degree and 8 years of experience, or a PhD and 5 years of experience.
  • Relevant experience working in space, aerospace, or equivalent professional environments with direct hands-on experience developing complex electrical power conversion systems.
  • Expertise in power electronics design, including switch-mode topologies and feedback control.
  • Hands-on experience taking electrical hardware from concept through production.
  • Proficiency with schematic capture and printed circuit board design tools, such as Altium Designer.
  • Strong skills in lab-based testing, troubleshooting, and debugging of circuits and components.
  • Ability to collaborate across mechanical, thermal, software, and manufacturing teams.
  • Ability to sit or stand for extended periods of time.
  • Ability to use a computer to complete assignments.
  • Ability to communicate with individuals and groups in person, by phone, and through telepresence.
  • Ability to pick up to 50 pounds.
  • U.S. person status, including U.S. citizenship, U.S. permanent residency, U.S. asylum status, or U.S. refugee status, is required to access information protected under U.S. export control laws.
Responsibilities
  • Serve as a subject matter expert for power conversion activities within assigned products.
  • Develop electrical architecture, specifications, component selection, circuit board design, implementation, verification, board bring-up, and debugging.
  • Partner with software, mechanical, thermal, manufacturing, and production test teams.
  • Derive engineering justification to resolve production issues throughout assembly, test, and vehicle integration.
  • Lead design reviews and generate documentation, including schematics, specifications, and test reports.
  • Plan and execute development and qualification testing, analyzing data to verify performance and reliability.
  • Lead the development, design, build, and commissioning of power conversion systems supporting product tests, operations, and launches.
  • Perform electrical design, testing, and integration from concept to production.
  • Manage key vendor relationships when involved and ensure performance and reliability of launch technologies.
Desired Qualifications
  • A master's degree from an accredited university in engineering or science.
  • Five or more years of electronic product experience designing hardware from concept through production, with emphasis on full life-cycle development of new hardware products rather than incremental updates to legacy hardware.
  • Five or more years of experience in electrical engineering specializing in power electronics, switch-mode topologies, and feedback controls.
  • High proficiency in designing and implementing electrical sizing of motors, cables, circuit protection, variable-frequency drives, motor starters, and other motion systems.
  • High proficiency in designing signal conditioning circuits, digital circuits, and switching power converters, demonstrated through successful fielding of multiple products.
  • High proficiency with lab equipment for development testing of circuits and components, including test definition, troubleshooting, data collection, and data reduction techniques.
  • Demonstrated experience on multiple projects and making hardware work within demanding time and resource constraints.
  • Experience working across engineering groups to define requirements and implement solutions.
  • Demonstrated ability using computer-aided design software, such as Altium Designer, NX, and Zuken.
  • Experience with Teamcenter or other product lifecycle management systems.

About the company

Long Wall repurposes its rocket and ground-system heritage to serve U.S. defense needs. Its RSX is a hypersonic flight-test vehicle used to test and replicate missile threats, Ironwood is a containerized ground system for rapid, on-demand launch, and Cyclops is a surface-launched exoatmospheric interceptor designed to attack missiles in midcourse. The company focuses on government and defense applications with U.S.-based manufacturing and an integrated set of launch, test, and intercept hardware. Its goal is to strengthen national security by providing ready-to-use, deployable missile-defense testing and interception capabilities for the U.S. military.

Company Size

51-200

Company Stage

Grant

Total Funding

$659.9M

Headquarters

Long Beach, California

Founded

2025

Get referred to Long Wall

See people who can refer or advise you

Simplify Jobs

Simplify's Take

What believers are saying

  • June 2026 Pentagon hypersonic activity validates demand for responsive test and interceptor systems.
  • Long Wall raised fresh capital in July 2026, extending runway to 2027 programs.
  • The 2025 rebrand aligned hiring and facilities around defense, improving government procurement fit.

What critics are saying

  • No public Cyclops contract was disclosed by December 2025, leaving demand unproven.
  • ABL's 2023 launch failure and 2024 fire destroyed credibility before the defense pivot.
  • SpaceX and Lockheed Martin dominate contracts; Long Wall risks becoming a niche supplier.

What makes Long Wall unique

  • Long Wall's 2025 pivot repurposed RSX and Ironwood for missile defense, not launch.
  • Cyclops targets exoatmospheric interceptors with containerized launch, aiming at low-cost magazine depth.
  • Its 160,000-plus square feet can produce over one hundred Cyclops rounds yearly.

Help us improve and share your feedback! Did you find this helpful?

Benefits

  • Health Insurance
  • 401(k) Retirement Plan
  • Remote Work Options
  • Paid Vacation
  • Paid Holidays
  • Flexible Work Hours
  • Wellness Program
  • Mental Health Support
  • Phone/Internet Stipend
  • Home Office Stipend
  • Conference Attendance Budget
  • Professional Development Budget

Growth & Insights and Company News

6 month growth

-1%

1 year growth

-1%

2 year growth

-13%
Defense Daily
Oct 22nd, 2026
MDA awards Long Wall $75M to complete flight testing of low-cost Cyclops interceptor

The Missile Defense Agency (MDA) has awarded California-based startup Long Wall $75 million to complete flight testing of Cyclops, its low-cost midcourse defence interceptor, the company said Thursday. Long Wall began developing Cyclops in 2024 and announced it in late 2025. The system is a surface-launched, mass-producible exo-atmospheric interceptor. At the time, the company said it aimed to reduce limits on where Cyclops can be fired, giving the military more flexibility.

AAM Nation
Jun 11th, 2025
Heart Aerospace Appoints Brittany Churchill As Vice President Of Operations

Heart Aerospace appoints Brittany Churchill as Vice President of Operations.

TechCrunch
Nov 15th, 2024
After raising nearly half a billion dollars, ABL Space pivots from launch vehicles to missiles

ABL had been developing a small launch vehicle called RS1 and a mobile ground system designed to fit inside a shipping container, with aspirations to bring truly portable, responsive launch to the market for the first time.

Offshore Magazine
Jul 2nd, 2024
ABL providing rig inspection services to Petronas offshore Indonesia

ABL has secured a one-year contract from Petronas to perform rig inspection services for its facilities offshore Indonesia.

SpaceNews
Jun 10th, 2024
Scout Space telescope to hitch a ride on ABL rocket

WASHINGTON - Scout Space, a startup specializing in space domain awareness through in-space observation, announced June 10 it signed a launch services agreement with ABL Space Systems.