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277 simulation engineer jobs at 94 companies in Westminster, CA

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Simulation Engineer
Redondo Beach, California, United States
$125k-$175k/yr OnsiteFull Time
Impulse Space
Impulse Space: Developing in-space transportation services and orbital transfer vehicles.
4+ YOEBachelor’s in aerospace/mechanical/physics/math or related; 4+ years modeling/simulation; C++ and Python; dynamics/thermodynamics/fluids; Git; LabVIEW.
C++, Python, LabVIEW, Git, NI-DAQmx, Modelica, Simscape, Amesim, SIL, HIL
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Senior Simulation Engineer
Hawthorne, California, United States
$100k-$200k/yr OnsiteFull Time
Freeform
Freeform: Deploys autonomous AI-powered metal 3D printing factories.
5+ YOE5+ years in custom simulation solvers; strong C/C++/CUDA; HPC/GPU experience; physics/math background.
C, C++, CUDA, GPU, High-Performance Computing (HPC)
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2mo
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Senior GNC Simulation Engineer
Long Beach, California, United States
$148k-$204k/yr OnsiteFull Time
Relativity Space
Relativity Space: Designing and manufacturing 3D-printed rockets and launch vehicles.
5+ YOEDesign and develop 6DOF GNC simulations, implement solvers, integrate subsystem models, and contribute to HITL testing in a startup aerospace environment.
C++, Rust, Python, Software simulation
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Robotic Simulation Engineer
Torrance, California, United States
$122k-$194k/yr OnsiteFull Time
Divergent
Divergent: Develops digital manufacturing systems for complex vehicle structures.
1+ YOEMechanical engineering degree or 6+ years manufacturing experience; 1+ yrs robotic simulation studies or 2+ yrs programming six-axis robots (KUKA, ABB, FANUC, Yaskawa); proficiency with Process Simulate/Teamcenter/Tecnomatix and CAD (NX); lift up to 50 lbs; climb ladders; strong communication.
Process Simulate, Teamcenter, Tecnomatix, NX, KUKA, ABB, FANUC, Yaskawa
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Lead Simulation Engineer
Hawthorne, California, United States
$142k-$235k/yr OnsiteFull Time
Venturi Astrolab
Venturi Astrolab: Designs and builds robotic rovers for Moon and Mars exploration.
10+ YOELead real-time and faster-than real-time simulations; 10+ years experience; 3+ years leading a team; integrate simulations with vehicle software; strong C++ and Python; model validation and sensor/actuator modeling.
C++, Python
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Senior Simulation Engineer
Los Angeles, California, United States
$170k-$215k/yr OnsiteFull Time
Apex
Apex: Mass-manufactures standardized satellite buses for commercial and government use.
8+ YOE8+ years in closed-loop simulation tools (6DOF, SITL, HITL); BS in CS/CE/AE; MS a plus; proficient in C/C++, Rust, Python; Linux; Docker; CI/CD; experience with physics-based simulations.
C/C++, Rust, Python, Linux, Docker, CI/CD
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Modeling & Simulation Engineer
El Segundo or Los Angeles or Washington or San Francisco or San Diego or Seattle or London
$140k-$190k/yr OnsiteFull Time
CHAOS Industries
CHAOS Industries: Develops advanced radar and sensing systems for modern defense.
5+ YOEBachelor's degree in a quantitative field, 5+ years supporting defense or advanced tech programs, proficiency in Python and MATLAB, experience with mission-level simulations (AFSIM, ESAMS, Brawler, Ansys STK), statistical analysis, Linux, and eligibility for Top Secret/SCI clearance.
AFSIM, ESAMS, Brawler, Ansys STK, Python, MATLAB, Pandas, Polars, NumPy, SciPy, Scikit-Learn, Matplotlib, Seaborn, CuPy, PyTorch, Linux, MAK VR-Forces, SIMDIS, PX4, X-Plane, Gazebo, NVIDIA Omniverse
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GNC Engineer, Modeling & Simulation
Huntington Beach, California, United States
$130k-$220k/yr OnsiteFull Time
Mach Industries
Mach Industries: Designs and manufactures autonomous unmanned aerial vehicles for defense.
3+ YOEBachelor’s in Engineering, Physics, or Mathematics; 3+ years in navigation or simulation; proficient in C++ and Python; experience with Git, Jira; familiarity with CI/CD.
C++, Python, Git, Jira, CI/CD
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Modeling & Simulation Engineer – Operations Analysis
Los Angeles, California, United States
$140k-$190k/yr OnsiteFull Time
Hikinex
Hikinex: Provider of outsourced sales and administrative business solutions.
5+ YOEBachelor’s degree or higher in engineering or related technical field; 5+ years defense/aerospace experience; strong simulation tools; Python/MATLAB skills; Linux; US citizenship with Top Secret/SCI clearance preferred.
AFSIM, ESAMS, STK, Brawler, Python, MATLAB, Linux
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Senior Modeling & Simulation Engineer
Gardena, California, United States
OnsiteFull Time
Singularity Defense
Singularity Defense: Develops low-cost autonomous missile and air defense systems.
7+ YOEBachelor's in computer science or related field, 7+ years building simulations or numerical modeling frameworks, proficient in Rust and Python, strong understanding of flight dynamics, rigid body dynamics, and numerical integration.
Rust, Python, C++, Rapier, Bevy, WebGL, OpenGL, Three.js, JSBSim, Gazebo
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Senior Software Engineer I/II - Simulation Engineering
Littleton or Long Beach
$120k-$160k/yr OnsiteFull Time
Rocket Lab
Rocket LabNasdaq: RKLB: Operates launch vehicles and manufactures satellites for space missions.
5+ YOEBachelor's degree and 5+ years experience in large-scale simulation engineering or distributed computational modeling; proficiency in Python or C++; experience with Monte Carlo campaigns, big-data analysis, and HPC; U.S. citizenship required.
Python, C++, Docker Swarm, Kubernetes
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Software Engineer - Modeling & Simulation
Costa Mesa, California, United States
$166k-$220k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
Bachelor’s/Master’s/Ph.D. in robotics, CS, or electrical engineering; strong sensor modeling, simulation, and software tooling experience.
Unreal Engine, C++, Python, Matplotlib, Plotly
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Simulation Software Engineer
Los Angeles, California, United States
OnsiteFull Time
Revel
Revel: Modern software platform for controlling complex hardware systems.
Bachelor's or Master's in CS/Software Engineering, strong C++ and/or Rust, knowledge of physics/applied math, modern engineering practices (testing, code reviews, CI/CD), strong problem-solving and communication.
C++, Rust, TypeScript, Python
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Network Modelling and Simulation Engineer
El Segundo, California, United States
$129k-$194k/yr OnsiteFull Time
The Aerospace Corporation
The Aerospace Corporation: Provides technical expertise and research for national space programs.
6+ YOEBachelor's in CS/CE/EE or related; 6+ years in data analysis, OSI/TCP-IP, network design and modeling/simulation; deep routing/switching knowledge; software development in Python or C/C++; ability to present results; ability to obtain security clearance (U.S. citizenship required); travel up to 10%.
Python, C/C++, OSI model, TCP/IP
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Senior Satellite Simulation & Test Software Engineer - TeraWave
Seattle or Los Angeles or Denver
$182k-$277k/yr OnsiteFull Time
Blue Origin
Blue Origin: Develops reusable rockets and systems for human spaceflight.
10+ YOEBachelor's degree in CS/SE/Aerospace, 10+ years spacecraft or embedded simulation/software experience, strong C/C++ and Python skills, simulation architecture and verification experience, familiarity with flight interfaces and IPC, U.S. work eligibility required.
C, C++, Python, Google Test, Git, CI/CD, containerized environments, IPC, sockets, shared memory, message queues, publish-subscribe middleware, NASA's Trick, cFS, CCSDS, MISRA C/C++, Linux, QNX, VxWorks, RTEMS, TCP/IP, UDP, CAN, I2C, SPI, RS-422/485
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Modeling Simulation & Analysis Engineer (Level 2)
El Segundo, California, United States
$92k-$138k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
2+ YOEBachelor's in STEM +2 years (or Master's + some experience), active U.S. Secret clearance, scripting with MATLAB/Python/C++/Java, simulation frameworks (AFSIM, Suppressor, STK), modeling, analysis, and visualization experience.
MATLAB, Python, C++, Java, AFSIM, Suppressor, STK, Bitbucket, GitHub, Gitlab
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Optical Modeling and Simulation Engineer
Los Angeles, California, United States
OnsiteFull Time
Furientis
Furientis: Develops cost-effective, high-volume interceptor missile systems.
4+ YOEB.S. in Optical Engineering/Physics/EE/CS (M.S./Ph.D. preferred), 4+ years relevant experience (4–7 preferred) including synthetic training data and EO/IR M&S, Python, CUDA, cloud/MODTRAN/DIRSIG experience, U.S. Person required.
Python, MODTRAN, MUSES, DIRSIG, CUDA, AWS, GCP, Azure, Git, Claude Code, Codex, OpenCode, Kilo, Unreal Engine, Unity, Zemax, Code V, NV-IPM, DTED
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Modeling and Simulation Manager
Denver or Long Beach
$145k-$245k/yr OnsiteFull Time
True Anomaly
True Anomaly: Develops autonomous spacecraft and software for space security missions.
8+ YOE4+ Mgmt8+ years in modeling/simulation with 4+ years leading teams; master's in aerospace/mechanical/systems engineering or related field; strong leadership and communication skills.
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Senior Robotics Software Engineer, Simulation & Evaluation
Irvine, California, United States
$155k-$180k/yr OnsiteFull Time
Field AI
Field AI: Develops autonomous software brains for robots in unstructured environments.
3+ YOE3+ years developing robotics simulation tools or related robotics software; strong C++ and/or Python skills; experience with Isaac Sim, Gazebo, MuJoCo, Unity, Unreal, or custom simulators; familiarity with ROS2, URDF/SDF, and debugging simulator-to-robot gaps.
C++, Python, Isaac Sim, Gazebo, MuJoCo, Unity, Unreal, ROS2, URDF, SDF, Omniverse, USD, PhysX, Docker, CMake, Bazel, GitHub Actions
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Software Engineer, Propulsion Simulation & Data Analysis
Hawthorne, California, United States
$125k-$175k/yr OnsiteFull Time
SpaceX
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
1+ YOEBachelor's in CS/engineering/STEM, 1+ year writing software and 1+ year physics-based simulation experience. Preferred: dynamical systems, lumped-parameter modeling, data pipelines, combustion/flow knowledge, full-stack and frontend (Angular/React), backend (Python, C#/.NET, C++, Java), control design, numerical analysis.
Angular, React, Python, C#/.NET, C++, Java, Unix-like operating systems
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