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252 simulation engineer jobs at 86 companies in Bellflower, CA

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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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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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Lead Modeling and Simulation Engineer
Simi Valley, California, United States
$155k-$170k/yr OnsiteFull Time
ALTEN
ALTENEuronext Paris: ATE: Provides engineering and technology consulting services to industrial clients.
8+ YOEMaster's or PhD in engineering, U.S. citizenship, existing DoD Secret clearance, 8+ years M&S experience in missile/aerospace systems, GNC and simulation expertise, MS Office and strong communication and leadership skills.
Microsoft Office
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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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Modeling and Simulation Engineer, Space
El Segundo or Costa Mesa
$166k-$220k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
Active U.S. Top Secret/SCI clearance, space mission MS&A experience, spacecraft and payload physics-level modeling, strong engineering background (astrodynamics/aerospace), MATLAB/Python proficiency, and excellent communication.
Lattice OS, MATLAB, Python, GitHub, GitLab, STK, Astrogator, SAP
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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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2mo
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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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Systems Engineer, Spacecraft Design & Simulation
Long Beach, California, United States
$112k-$159k/yr OnsiteFull Time
Vast
Vast: Develops and operates commercial artificial-gravity space stations.
4+ YOEBachelor's in engineering/physics, 4+ years spacecraft systems or mission analysis experience, broad subsystem knowledge (power, thermal, ADCS, orbital mechanics), rigorous validation mindset, AI-assisted workflows familiarity, able to read and review code.
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3mo
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Application Engineer – Multi-Physics Simulation
Ghent or Calabasas
OnsiteFull Time
Keysight Technologies
Keysight TechnologiesNew York Stock Exchange: KEYS: Manufactures hardware and software for electronic test and measurement.
Bachelor's or Master’s in EE/ME/Physics, strong understanding of electronic design workflows, experience with engineering simulation/EDA tools, ability to translate engineering problems into product requirements, customer-facing and product ownership experience, excellent English.
Electronic Design Automation (EDA), Keysight ADS, Cadence Allegro, Cadence Celsius, Siemens FloTherm, Siemens NX, Ansys Mechanical / Icepak
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Engineer, Ride Comfort Objectivation & Simulation
Novi or Charlotte or San Francisco or Los Angeles or New York City
$130k-$160k/yr OnsiteFull Time
Scout Motors
Scout Motors: Designs and manufactures all-electric rugged SUVs and trucks.
8+ YOEBachelor's degree in engineering, 8+ years in ride comfort/vehicle dynamics, hands-on instrumentation and proving-ground testing, experience with MBS and correlation, proficiency with CANape, INCA, Diadem, MATLAB, Python, Adams/CarSim/Simpack.
CANape, INCA, Diadem, MATLAB, Python, Adams, CarSim, Simpack
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