Benchmark Space Systems

Senior GNC Engineer

Pleasanton, CA · Senior

No sponsorshipDetected 7 days ago

MATLABAlgorithmsEmbedded SystemsMechanical DesignAerospace EngineeringElectrical EngineeringSensorsControlsSimulink

About the role

Job Purpose and Primary Objectives: Benchmark Space Systems, a leader in small satellite propulsion systems and in-space mobility services, is looking for an experienced Senior GNC Engineer to join our team.
In this role you will focus on the software layer of our propulsion systems.

With that said, there are primary job responsibilities and measurements of success for this position, which are: Design and implement GNC flight algorithms for spacecraft propulsion systems (chemical and electric), including closed loop burn execution, thrust, delta-v estimation, burn targeting, cutoff logic, and trajectory correction maneuvers.
Own the GNC flight code: architecture, implementation, review standards, configuration management, and verification evidence.
Develop and maintain 6 degrees of freedom simulation capability for burn execution and dispersion analysis across multiple programs.
Perform stability analysis of control loops (classical margins, disturbance and slosh interaction, actuator/sensor dynamics) and document it to flight-review standards.
Validate flight software against simulation truth models and HIL results; close the loop between analysis, code, and test.
Support mission design reviews (PDR/CDR) with GNC analysis products: pointing budgets, execution-error models, and dispersion results.
5+ years of GNC experience on space vehicles, with demonstrated ownership of algorithms from design through implementation and test.
Working knowledge of spacecraft attitude dynamics, orbital mechanics, and propulsive maneuver design.
Ability to write clear technical documentation and present analysis at design reviews.
Prior experience as a technical lead or mentor on a small team.

This position is ideal for a self‑driven individual with strong attention to detail and the ability to execute multiple tasks simultaneously in a fast-paced environment.
Our propulsion technologies provide satellites the ability to maneuver, avoid collisions, and maximize mission potential-all while contributing to a safer, more sustainable space environment.
Bachelor's degree in aerospace engineering, mechanical engineering, electrical engineering, physics, or related field.
Strong proficiency in MATLAB/Simulink, including model-based design of flight algorithms.
Experience with propulsion-specific GNC: finite-burn effects, thrust/Isp uncertainty, propellant slosh, optimal jet select.
Regularly required to stand, walk, bend, reach, and kneel.

finite-burn effects, thrust/Isp uncertainty, propellant slosh, optimal jet select.
Experience with both chemical and electric propulsion control (long-duration low-thrust guidance a plus).
Experience with strapdown navigation, IMU error modeling, and sensor fusion.
Monte Carlo and linear covariance dispersion analysis experience.
GMAT, STK, FreeFlyer, or equivalent astrodynamics tooling.
Experience supporting government programs (NASA, DoD, SBIR/STTR).

Experience validating GNC software through hardware-in-the-loop testing, including defining test objectives and criteria.
Familiarity with flight software frameworks (cFS, F´) and real-time operating systems.

Health insurance (100% coverage for individuals, 80% for families).
Vision & Dental Insurance.
Company paid life, AD&D, and disability insurances.
Voluntary Life Insurance.
Flexible schedule.
Unlimited vacation.
We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status.
At its core, Benchmark is an entrepreneurial, fast-paced organization.
Education and/or Experience: Bachelor's degree in aerospace engineering, mechanical engineering, electrical engineering, physics, or related field.

What makes you stand out: Experience writing flight or embedded software in C or Rust.

Benchmark Space Systems is an equal opportunity employer committed to fostering an inclusive, innovative environment with the best employees.
equal opportunity employer committed to fostering an inclusive, innovative environment with the best employees.
If you have a disability or special need that requires accommodation, please contact us at careers @benchmark-space.com

U.S. Person Requirement: Due to the nature of the work and access to export-controlled information, applicants must qualify as a U

This listing is sourced directly from Benchmark Space Systems's careers page and normalized into a canonical job model.