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Long Wall
Long Wall

Sr. GNC Engineer

California, U.S.
Full-Time
On-site
$155,000 – $226,000 per year

TLDR

Develop robust control solutions for endo- and exo-atmospheric flight systems, from modeling and simulation through integration, HITL testing, and flight testing.

Long Wall Company was created in 2024 to accelerate missile defense technology for the U.S. and our allies. We specialize in ballistic missile defense and are developing Cyclops, a low-cost, mass-producible interceptor. We also produce containerized launchers and offer low-cost targets for threat replication. The future of global security depends on defensive technology that redefines cost, magazine depth, and distribution to deter and defend against evolving threats. Join us.

WHAT WE LOOK FOR

Mission-Driven Problem Solvers – The problems in missile defense demand ingenuity. We want engineers who approach challenges with curiosity, embrace failure as a learning opportunity, and stay focused on delivering the best solution for the mission.

Total Ownership – We seek engineers who take full responsibility for delivering flight-ready work while recognizing that no one succeeds alone. The best engineers make their teammates better, knowing that complementary skills create force multiplication and drive mission success.

Sr. GNC Engineer

As a Senior GNC Engineer, you will help design and implement robust control solutions for both endo- and exo-atmospheric flight systems. You’ll work closely with a cross-functional team of mechanical, fluid, and electrical engineers to develop innovative, deployable launch platforms that support Long Wall’s rapid-deployment goals.

This role offers the opportunity to contribute across the full development lifecycle—from modeling and simulation to integration and flight testing. Your work will directly impact every mission and flight, playing a critical part in shaping the future of responsive missile defense systems.

RESPONSIBILTIES:

  • Develop GNC algorithms, models and software
  • Develop, analyze and review data to validate and verify system meets specifications and design requirements
  • Perform modeling and simulation tasks to validate system design and performance
  • Perform GNC system integration, checkout and troubleshooting of anomalies
  • Perform and direct test planning, development of test procedures and test execution
  • Develop sensor and support Avionics systems requirements
  • Support critical sensor (e.g. IMU) system engineering, integration and test
  • Support critical controller (e.g. Thrust Vector Control Actuators, Throttle Valves) system engineering, integration and test
  • Mission specific analysis for customer launch and in support of business development
  • Perform "Hardware in the Loop" (HITL) testing/simulation prior to launch on both testbed and integrated launch vehicle

    • BASIC QUALIFICATIONS:

  • B.S. degree from an accredited university
  • 6+ years of experience in the development of aircraft, missile, spacecraft, or similar vehicle GNC system

    • REQUIRED SKILLS AND EXPERIENCES:

  • Hands-on experience developing GNC systems for aircraft, missiles, spacecraft, or similar vehicles
  • Proficiency in modeling, simulation, and analysis tools (e.g., MATLAB/Simulink)
  • Experience developing and validating GNC algorithms, models, and flight software
  • Strong understanding of control theory, vehicle dynamics, and trajectory analysis
  • Ability to plan and execute test campaigns, including integration, checkout, and troubleshooting

    • PREFERRED SKILLS AND EXPERIENCES:

  • M.S. or PhD degree from an accredited university
  • Demonstrated skills in modeling, simulation, and analysis software such as MATLAB/Simulink and experience in at least one or more high-level programming languages (e.g., C, C++, or FORTRAN)
  • Experience developing terminal engagement algorithms
  • Experience with hypersonic flight regime control systems
  • Proficiency in trajectory planning/design and optimization algorithms or tools (e.g., POST2)
  • Day of launch or on-orbit systems support, including launch limits and loads/GNC capabilities evaluation
  • Demonstrated ability to solve complex and difficult technical problems with simple, robust solutions

    • ADDITIONAL REQUIREMENTS:

  • 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 telepresence
  • Ability to pick up to 50lbs
  • While performing the duties of this job, the employee will typically work in an office environment
  • Ability to travel up to 25% of the time

    • ITAR Requirement

    This position requires access to information protected under US export control laws, including the International Traffic in Arms Regulations and/or the Export Administration Regulations.  As such, US person status (including US citizens, U.S. permanent residents, individuals granted U.S. asylum status, or individuals admitted in U.S. refugee status) is a required qualification for this position.

    Equal Opportunity Employer

    We are an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, protected veteran status, disability, genetics, or citizenship status (when otherwise legally authorized to work and access export-controlled data) and will not be discriminated against on the basis of such characteristics or any other status protected by the laws or regulations in the locations where we operate. We encourage applicants of all ages.

    Benefits

    Education Stipend

    Student loan repayment assistance program

    Equity Compensation

    equity

    Health Insurance

    Heavily employer-subsidized medical, dental, and vision insurance plans

    Learning Budget

    4% 401k match

    Long Wall paid financial wellness program

    Paid Parental Leave

    Paid Time Off

    Paid time off for non-exempt employees and flexible vacation policy for exempt employees

    Wellness Stipend

    Long Wall paid life insurance and LTD coverage

    Long Wall
    Long Wall

    Long Wall accelerates missile defense technology for the U.S. and its allies by developing containerized, mass-producible missile defense systems, alongside offering rapid, low-cost flight testing. Our focus is on delivering defensive technology that is more accessible, cost-effective, and high-performing to enhance global security and stability.

    Founded
    Founded 2024
    Employees
    11-50 employees
    Industry
    defense & space
    Funding stage
    Seed
    Aerospace & Defense
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