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Added 8 mins ago
Principal Systems Engineer - Processing, Guidance, & Controls Engineers t
RTX Corporation
tucson, AZ
Modeling, Simulation, and Analysis - delivers product‑level simulations that represent system components, subsystems, and operating environments, supporting the design, development,…
Added 8 mins ago
Sr. Systems Engineer - Processing, Guidance, & Controls Engineers
RTX Corporation
tucson, AZ
Modeling, Simulation, and Analysis - delivers product‑level simulations that represent system components, subsystems, and operating environments, supporting the design, development,…
Added 8 mins ago
Systems Engineer II - Processing, Guidance, & Controls Engineers
RTX Corporation
tucson, AZ
Modeling, Simulation, and Analysis - delivers product‑level simulations that represent system components, subsystems, and operating environments, supporting the design, development,…
Added 2 hours ago
Staff Systems Engineer - Modeling Simulation & Analysis - 20144
Northrop Grumman
Huntsville
Northrop Grumman Defense Systems is seeking a Staff Systems Engineer - Modeling, Simulation & Analysis (level 5) to join its team. This position is in Huntsville, AL.
Added 2 hours ago
Radar Modeling and Simulation Analyst, Senior
BOOZ ALLEN HAMILTON INC
Dayton, OH
Job Number: R0239961 Radar Modeling and Simulation Analyst, Senior The Opportunity: Your engineering skills and determination are needed to develop the cutting-edge technology used to…
Added 3 hours ago
Software Engineer, Rust
Anduril Industries
Waltham, MA · Broomfield, CO
Develop high-performance Rust software for real-time systems, ranging from tactical implementations to simulation environments and decision support tools.
Added 3 hours ago
Software Engineer, Rust
Anduril Industries
Broomfield, CO
Develop high-performance Rust software for real-time systems, ranging from tactical implementations to simulation environments and decision support tools.
Added 3 hours ago
Software Engineer, Robotics Tracking and Fusion
Anduril Industries
Washington, DC · Waltham, MA
Develop high-performance software for real-time systems, ranging from tactical implementations to simulation environments and decision support tools.
Added 3 hours ago
Software Engineer, Robotics Tracking and Fusion
Anduril Industries
Waltham, MA
Develop high-performance software for real-time systems, ranging from tactical implementations to simulation environments and decision support tools.
Added 3 hours ago
Software Engineer, Battlespace Awareness
Anduril Industries
Broomfield, CO
Use high-fidelity modeling and simulation environments, innovative analysis tools, and sound analysis techniques to quantify the benefit of our technology
Added 3 hours ago
Software Engineer, Battlespace Awareness
Anduril Industries
Waltham, MA · Broomfield, CO
Use high-fidelity modeling and simulation environments, innovative analysis tools, and sound analysis techniques to quantify the benefit of our technology
Added 3 hours ago
Senior Software Engineer, Rust
Anduril Industries
Waltham, MA · Broomfield, CO
Develop high-performance Rust software for real-time systems, ranging from tactical implementations to simulation environments and decision support tools.
Added 3 hours ago
Senior Software Engineer, Rust
Anduril Industries
Broomfield, CO
Develop high-performance Rust software for real-time systems, ranging from tactical implementations to simulation environments and decision support tools.
Added 3 hours ago
Senior Software Engineer, Robotics Tracking and Fusion
Anduril Industries
Washington, DC · Waltham, MA
Develop high-performance software for real-time systems, ranging from tactical implementations to simulation environments and decision support tools.
Added 3 hours ago
Senior Software Engineer, Robotics Tracking and Fusion
Anduril Industries
Waltham, MA
Develop high-performance software for real-time systems, ranging from tactical implementations to simulation environments and decision support tools.
Added 3 hours ago
Senior Software Engineer, Battlespace Awareness
Anduril Industries
Broomfield, CO
Use high-fidelity modeling and simulation environments, innovative analysis tools, and sound analysis techniques to quantify the benefit of our technology
Added 3 hours ago
Senior Software Engineer, Battlespace Awareness
Anduril Industries
Waltham, MA · Broomfield, CO
Use high-fidelity modeling and simulation environments, innovative analysis tools, and sound analysis techniques to quantify the benefit of our technology
Added 3 hours ago
Senior GNC Software Engineer
Anduril Industries
Waltham, MA · Broomfield, CO
Analyze system performance using high-fidelity simulations, innovative modeling tools, and rigorous statistical techniques to validate planner behavior across diverse mission scenarios.
Added 3 hours ago
GNC Software Engineer
Anduril Industries
Waltham, MA · Broomfield, CO
Analyze system performance using high-fidelity simulations, innovative modeling tools, and rigorous statistical techniques to validate planner behavior across diverse mission scenarios.
Added 3 hours ago
Systems Engineer, Mid
BOOZ, ALLEN & HAMILTON, INC.
Indian Head, MD
Serve as a systems engineer supporting U.S. Navy munition and energetic programs, providing technical leadership throughout the system development lifecycle to meet technical objectives for…
Added 3 hours ago
Systems Engineer, Senior
BOOZ, ALLEN & HAMILTON, INC.
Indian Head, MD
Serve as a systems engineer supporting U.S. Navy munition and energetic programs, providing technical leadership throughout the system development lifecycle to meet technical objectives for…
Added 4 hours ago
Senior GNC Engineer
Greywright Inc
Boston, MA
Greywright is hiring a Senior Guidance, Navigation, and Control (GNC) Engineer to lead the build-out and improvement of the algorithms that keep platforms on course, from design and…
Added 5 hours ago
DT
AI (ML) Engineer - Colorado Springs, CO
Davidson Technologies, Inc.
Colorado Springs, CO
- $119,000 to $142,000 USD / year
…cross-functionally with innovative team members skilled in Modeling & Simulation (M&S), Artificial Intelligence (AI)/Machine Learning (ML), DevSecOps, and…
Added 5 hours ago
DT
Entry-Level Systems Engineer - Woburn, MA
Davidson Technologies, Inc.
Woburn, MA
- $86,000 to $110,000 USD / year
…architectural design, requirements generation and flow-down, modeling and simulation, systems analysis, integration, test, and evaluation of world-class Missile Defense & Sensor Systems.…
Added 5 hours ago
DT
Junior Systems Engineer - Woburn, MA
Davidson Technologies, Inc.
Woburn, MA
- $106,000 to $120,000 USD / year
…architectural design, requirements generation and flow-down, modeling and simulation, systems analysis, integration, test, and evaluation of world-class Missile Defense & Sensor Systems.…

Greywright Inc

Senior GNC Engineer

Boston, MA, United States

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Job details

Experience: 8+ years of GNC experience, including technical leadership and building or leading a team, on real world systems.
Posting language: English
Posted: Oct 31, 2026

Original job description

Greywright is hiring a Senior Guidance, Navigation, and Control (GNC) Engineer to lead the build-out and improvement of the algorithms that keep platforms on course, from design and simulation through fielding. You will build and lead the GNC team and set the direction for advancing baseline GNC capabilities, owning architecture and technical direction from requirements through embedded software and test. You'll work closely with platform hardware, software, and systems engineering. In this role you will help build the most advanced unmanned maritime vessels in the world.

What you'll do

Develop and tune guidance and control laws for high-speed craft that stay stable and responsive through nonlinear, regime-dependent dynamics across the full speed envelope.
Extend and maintain high-fidelity 6-DOF simulations and models of vehicle dynamics across speed regimes, sensors, actuators, and sea states.
Develop, update, and maintain navigation filters (e.g., Kalman / EKF / UKF) fusing IMU, GNSS, odometry, signals of interest, and other sensor data, including position sources that are sparse, intermittent, or of variable accuracy.
Design measurement validation, outlier rejection, and fault detection so navigation degrades gracefully when aiding sources drop out, disagree, or change in quality.
Derive GNC requirements, error budgets, and stability margins; run Monte Carlo and linear analyses to verify performance.
Use system identification and on-water test data to build vehicle models and refine controller tuning.
Implement GNC algorithms in embedded software (C/C++) and support code generation from models.
Plan and execute software-in-the-loop, hardware-in-the-loop, and field tests; analyze test data.
Support sensor and actuator selection, calibration, and integration with avionics and hardware teams.
Build and lead the GNC team: recruit and hire engineers, establish the team's tools, processes, and standards, own the roadmap for evolving the GNC baseline, mentor engineers, and present results in design reviews.

What you bring

Proven track record of engineering leadership.
Ability to work well in a fast moving and dynamic team environment.
B.S. in Aerospace, Mechanical, or Electrical Engineering, or a related field.
8+ years of GNC experience, including technical leadership and building or leading a team, on real world systems.
Solid grounding in classical, modern, and nonlinear control theory, rigid-body dynamics, and estimation.
Deep experience with Kalman filters and inertial navigation, including fusing asynchronous, intermittent, or degraded aiding measurements.
Experience designing controllers for systems with strongly nonlinear or regime-dependent dynamics (e.g., gain scheduling, adaptive, or robust control).
Experience inheriting, validating, and improving fielded GNC software.
Proficiency in MATLAB/Simulink or Python for modeling, simulation, and data analysis.
Strong C/C++ embedded software skills.
Clear written and verbal communication, and comfort working across hardware and software teams.
Willingness to travel up to 50% of the time when needed.
This role requires access to ITAR/EAR-controlled data; U.S. person status is required as defined by 22 CFR 120.62.

Nice to have

M.S. or Ph.D. in a GNC-related discipline.
Fielded heritage: GNC you designed has been deployed on a real vehicle or system.
Experience with optimal control, trajectory optimization, or MPC.
Experience with marine vehicle dynamics, high-speed surface craft, or vessel autopilots.
Experience with alternative or GNSS-degraded navigation (e.g., signals of opportunity, feature-based, or collaborative navigation).
Hardware-in-the-loop test bench development.
Exposure to DO-178C, NASA-STD-8739.8, or similar software assurance processes.
Eligibility to obtain a U.S. security clearance.
Meaningful early-stage equity.
Great health, dental, and vision insurance.
Unlimited vacation.

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More about this job

Skills

C
C++
Analyse test data
Leadership
Electrical engineering
Lead a team
Estimating
Scheduling
The MathWorks MATLAB
Python
Data analysis
Communication skills

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