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Spacecraft GNC Engineer Verified today

Apex Spacecraft · Los Angeles, CA · Space Systems · first seen 2026-07-16
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About the Role

Apex manufactures commercial satellite buses at scale for customers launching payloads to space. We combine software, vertical integration, and manufacturing-focused hardware design to enable earth observation, communications, and other space missions.

We are seeking a seasoned Spacecraft GNC Engineer to work on a closely integrated team and drive the design of the GNC system, including hardware and software, to meet the position, attitude, knowledge and stability requirements of our bus. You will have an opportunity to approach this from a clean sheet design and inform coupled trades across the vehicle architecture. This role reports directly to the Director of Spacecraft.

Responsibilities

  • Develop and implement GNC algorithms for satellite systems, including attitude determination and control, orbit determination and control, and precision pointing.
  • Conduct analysis of spacecraft dynamics and perform simulations to evaluate system performance, stability, and accuracy.
  • Design, develop, and test spacecraft control systems, including reaction wheels, thrusters, and magnetic torquers, to achieve desired mission objectives.
  • Collaborate with spacecraft and payload engineers to define system requirements and ensure GNC system compatibility and integration.
  • Perform trade studies and make recommendations for optimal GNC configurations, considering factors such as power consumption, mass, and cost.
  • Develop and execute test plans and procedures for GNC systems, including system-level testing, performance evaluation, and anomaly resolution.
  • Analyze and interpret spacecraft telemetry data to diagnose and troubleshoot GNC-related anomalies and performance issues.
  • Collaborate with software engineers to develop GNC software modules and interfaces, ensuring seamless integration with overall satellite systems.
  • Develop GNC algorithm and subsystem tests and validation criteria for functional and performance verification.
  • Provide technical expertise and support to cross-functional teams, including project managers, system engineers, and operations personnel.
  • Stay up-to-date with industry advancements and emerging technologies in GNC systems.

Requirements

  • Bachelor's or Master's degree in Aerospace Engineering, Electrical Engineering, or a related field.
  • 3+ years of professional experience as a GNC Engineer, preferably in the satellite or aerospace industry.
  • Strong knowledge of spacecraft dynamics, orbital mechanics, and control theory.
  • Proficiency in programming languages such as C/C++, MATLAB, Python with experience in numerical simulation and analysis.
  • Familiarity with GNC hardware and software components, such as sensors (gyroscopes, accelerometers, star trackers), actuators, and control algorithms.
  • Experience with simulation tools and software packages commonly used in spacecraft GNC engineering (e.g., MATLAB/Simulink, STK).
  • Knowledge of industry standards and protocols for satellite GNC systems, such as CCSDS, ECSS, and GPS/GNSS.
  • Strong analytical and problem-solving skills, with the ability to evaluate complex system dynamics and propose effective solutions.
  • Excellent teamwork and communication skills, with the ability to collaborate effectively with cross-functional teams and stakeholders.
  • Self-motivated and able to work independently with minimal supervision, as well as in a team-oriented environment.
  • Attention to detail, organizational skills, and the ability to manage multiple priorities and meet project deadlines.
  • U.S. Person status is required as this position needs to access export controlled data.

What We Offer

  • Equity in Apex
  • 100% company-paid medical, dental, and vision for you and your dependents, plus $100k life insurance at no cost
  • Starting at 15 days vacation, growing to 20+ days annually, plus 10 paid holidays
  • Generous 401(k) matching: 100% match on first 3%, 50% on next 2%
  • 8 weeks paid parental leave, plus childcare reimbursement up to $350/day for work-related travel
  • Daily catered lunch and unlimited snacks
  • World-class Playa Vista office with flexibility for in-person collaboration
  • All tools and equipment needed for productivity

Compensation

Compensation ranges are set by role, level, location, and alignment with market data. A candidate's specific level and base pay are determined case by case and may vary with job-related skills, education, experience, technical capabilities, and internal equity. Full-time hires are eligible for long-term incentives in the form of stock options, along with medical, dental, and vision coverage and a 401(k) retirement plan.