Sr. GNC Engineer

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, technicians, and corporate professionals 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 those who take full responsibility for delivering flight-ready work while recognizing that no one succeeds alone. The best engineers, technicians, and corporate professionals 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.   National Security Suitability Depending on the position, Long Wall may require the successful completion of a national security suitability screening in addition to its standard background check. Where required, the screening is conducted by Long Wall’s Facility Security Officer following offer acceptance and may include verification of any current or prior U.S. government security clearances or public trust positions. Information provided during the screening is used solely to determine suitability for the role and is held in confidence by Security. For positions subject to this requirement, any offer of employment is contingent upon a favorable suitability determination.