1,238 simulation engineer jobs at 381 companies in California

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Simulation Engineer
Mountain View, California, United States
$200k-$360k/yr OnsiteFull Time
DensityAI
DensityAI: Semiconductor startup building full-stack AI accelerators for frontier-scale large language model inference.
5+ YOE5+ years building simulators/emulators or large-scale systems, exceptional modern C++ and strong Python, computer-architecture fundamentals, testing/CI/profiling experience, and simulator performance optimization skills.
C++, Python, gem5, QEMU, SystemC-TLM, Spike, JIT
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Senior Senior Simulation Engineer - Core Simulation Platform
Sunnyvale or Mountain View
$165k-$200k/yr OnsiteFull Time
Apptronik
Apptronik: Private humanoid robotics developing AI-powered robots for manufacturing, logistics, and future healthcare and home applications.
5+ YOE5+ years simulation or software engineering experience, strong C++ and/or Python, familiarity with modern robotic simulators (Isaac Lab, MuJoCo), cloud-scale parallel simulation (AWS/GCP/Azure), CI/CD, and Reinforcement Learning; MS/PhD or equivalent experience.
C++, Python, Isaac Lab, MuJoCo, Ray, Kubernetes, AWS, GCP, Azure, CI/CD
4w
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Thermal Simulation Engineer
Palo Alto, California, United States
OnsiteFull Time
Cspeed
Cspeed: Private semiconductor startup developing optical interconnects and photonic solutions for AI data-center infrastructure.
6+ YOEMS or PhD in engineering/physics,6+ years thermal simulation for semiconductor or electronic packages,expertise with commercial thermal/CFD tools,heat-transfer fundamentals,simulation-to-hardware correlation.
Ansys Icepak, Fluent, Simcenter Flotherm, Cadence Celsius
1mo
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Staff Simulation Engineer - Foundry
San Francisco, California, United States
$199k-$292k/yr OnsiteFull Time
DoorDash
DoorDashNYSE: DASH: Technology enabling local on-demand delivery and commerce.
10+ YOEMaster's or PhD in CS/EE/ME/Robotics/Aerospace, 10+ years in robotics or physics-based simulation, deep simulator internals expertise, simulation-autonomy integration, technical leadership experience.
MuJoCo, Gazebo, Isaac, Newton, Genesis, Covey
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Simulation Engineer - Avionics
South San Francisco, California, United States
OnsiteFull Time
Zipline
Zipline: Autonomous logistics and drone delivery service.
Experience in structural and thermal simulation of electronic/electromechanical systems, FEA (linear/nonlinear), vibration/shock/fatigue analyses, thermal modeling, electronics packaging knowledge, and scripting with Python or MATLAB.
Abaqus, ANSYS Mechanical, Siemens Simcenter 3D/Nastran, Altair OptiStruct, COMSOL, Python, MATLAB, Zemax, FRED, LightTools, TracePro, CETOL, 3DCS, VisVSA
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Robotic Simulation Engineer
Torrance, California, United States
$122k-$194k/yr OnsiteFull Time
Divergent Technologies
Divergent Technologies: Private U.S. manufacturer of software-defined metal structures for aerospace, defense, and automotive customers.
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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Member of Technical Staff - Simulation Engineer
San Francisco, California, United States
OnsiteFull Time
Embedding VC
Embedding VC: Private early-stage venture capital fund backing Generative AI startups and incubating AI-native companies in the United States.
Experience building robotics simulation systems, strong software engineering (Python/C++), knowledge of physics/sensor simulation and sim-to-real transfer, and ability to collaborate with robotics and ML teams.
Isaac Sim, NVIDIA Isaac Sim, Omniverse, MuJoCo, PyBullet, Gazebo, Drake, Python, C++, ROS2
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MTS, Simulation Infrastructure Engineer
San Carlos, California, United States
OnsiteFull Time
Genesis AI
Genesis AI: Private French full-stack robotics building general-purpose robots and physical-AI systems for factories, laboratories, hospitals, and homes.
Experience building simulation and robotics infrastructure, strong software engineering in Python or C++, and knowledge of distributed systems, data pipelines, and production engineering practices.
Python, C++, genesis-world, Isaac Sim, MuJoCo, Newton, Drake, Gazebo
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Staff Simulation Engineer - Foundry, DoorDash Air
San Francisco, California, United States
$199k-$292k/yr OnsiteFull Time
DoorDash
DoorDashNYSE: DASH: Technology enabling local on-demand delivery and commerce.
10+ YOEMaster’s or PhD in a related engineering or computer science field, 10+ years in robotics or physics-based simulation, deep simulator expertise, autonomy integration, and technical architecture leadership.
MuJoCo, Gazebo, Isaac, Newton, Genesis, CI/CD, Microsoft?
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Simulation & Modeling Engineer
San Francisco or Ann Arbor
$155k-$200k/yr OnsiteFull Time
Sygaldry Technologies
Sygaldry Technologies: Quantum-accelerated AI server developer helping AI organizations speed training and inference.
Experience modeling and simulating distributed AI acceleration architectures, heterogeneous GPU/CPU clusters, architecture modeling platforms, and C++ or SystemC behavioral models.
ASTRA-sim, Gem5, C++, SystemC, GPUs, CPUs
2w
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Camera Simulation Engineer
Cupertino, California, United States
OnsiteFull Time
Apple
AppleNASDAQ: AAPL: Designing and manufacturing consumer electronics, software, and digital services.
Expertise in imaging, optical system design, or computer vision, with broad skills in simulation, calibration, metrology, hardware design, and cross-functional product development.
machine vision
1mo
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Lead Thermal Simulation Engineer
San Francisco, California, United States
$342k-$445k/yr OnsiteFull Time
OpenAI
OpenAI: AI research and deployment focused on beneficial AGI.
Experience in thermal simulation and analysis of electromechanical systems, correlating models with test data, and developing simulation workflows; familiarity with robotics and multidisciplinary collaboration.
Simcenter 3D, Abaqus, Ansys, Nastran, LS-DYNA, COMSOL
2mo
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Vehicle Simulation Engineer II
Long Beach, California, United States
$126k-$173k/yr OnsiteFull Time
Relativity Space
Relativity Space: Aerospace developing 3D-printed rockets and launch services.
1+ YOEBS/MS/PhD in engineering, CS, physics or related; 1+ years relevant experience; experience with rocketry or complex hardware; proficiency in Python, Julia or MATLAB; simulation and end-to-end ownership skills.
Python, Julia, MATLAB, Docker, Continuous Integration/Continuous Deployment (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: Redefining modern defense with a multi-product portfolio.
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
1mo
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Simulation Researcher/Engineer
Redwood City, California, United States
OnsiteFull Time
Luma AI
Luma AI: AI is a private creative AI platform generating video and images for creators and teams.
Experienced in robotics simulation or generative 3D, fluency in Python and C++, familiarity with production physics engines, and track record shipping simulation systems.
Python, C++, Isaac Sim/Lab, MuJoCo, Bullet, PhysX, Drake
3mo
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GNC Engineer, Modeling & Simulation
Huntington Beach, California, United States
$130k-$220k/yr OnsiteFull Time
Mach Industries
Mach Industries: Private defense manufacturer developing unmanned aerospace systems and production infrastructure for military customers.
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
2mo
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Simulation Engineer I, Arc Vehicle
Playa Vista, California, United States
$71k-$124k/yr OnsiteFull Time
Inversion Space
Inversion Space: Privately held aerospace building autonomous reentry vehicles for defense, logistics, and rapid cargo delivery from orbit.
1+ YOEBachelor's in CS/CE/Aerospace/Mechanical or equivalent experience; 1+ years internship/research/professional experience in software or physics-based simulation; proficiency with C++ or Python on Linux; strong physics and numerical analysis; familiarity with Git.
C++, Python, Linux, Git, MATLAB/Simulink, ROS/ROS2, Docker, CI/CD, HPC, SIL, HIL
3w
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Beamforming Systems & Simulation Engineer
California or Washington
$192k-$269k/yr RemoteFull Time
Blue Origin
Blue Origin: Developing reusable space vehicles and infrastructure.
M.S. or Ph.D. in engineering, applied physics, or related field; expertise in phased arrays, beamforming, DSP, or wireless systems; MATLAB/Python simulation experience; U.S. work authorization required.
MATLAB, Python, C, C++, CUDA, FPGA, ASIC, OFDM, 5G, 3GPP, Monte Carlo, Defense Biometric Identification System (DBIDS), Microsoft Excel
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Staff Engineer, Modeling & Simulation (R4869)
San Diego, California, United States
OnsiteFull Time
Shield AI
Shield AI: Developer of AI-powered autonomous systems for defense and aerospace.
7+ YOEBS/MS in a related field and 7+ years of simulation software development using modern C++ and performance optimization. Requires dynamics, simulation systems, testing, V&V, and complex build environment experience.
C++, CMake, GTest, Python, CI/CD
1mo
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Simulation and Modeling Engineer
El Segundo, California, United States
$100k-$160k/yr OnsiteFull Time
Wardstone
Wardstone: Private U.S. defense-tech startup building modular interceptors for air-breathing and ballistic missile defense.
Bachelor's or master's degree in aerospace, mechanical engineering, physics, applied mathematics, or similar; strong dynamic simulation experience; expertise in orbital or flight dynamics, numerical methods, and model validation; US person or permanent resident required.
MATLAB, Simulink, Python, C++, Julia, OpenFOAM, SU2, ANSYS Fluent