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65 software simulation engineer jobs at 26 companies in El Monte, CA

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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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3mo
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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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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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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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Simulation Engineer
Los Angeles, California, United States
$145k-$185k/yr OnsiteFull Time
Apex
Apex: Mass-manufactures standardized satellite buses for commercial and government use.
3+ YOE3+ years in closed-loop simulation tools; BS in CS/CE/EE/Aerospace; proficient in C/C++, Python; Linux; Docker; CI/CD; experience with SITL/HITL; strong analytical skills.
C++, Rust, Python, Linux, Docker, CI/CD, Git
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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 Software Engineer, Infrastructure & Simulation
Huntington Beach, California, United States
$165k-$220k/yr OnsiteFull Time
Mach Industries
Mach Industries: Designs and manufactures autonomous unmanned aerial vehicles for defense.
5+ YOE5+ years building production systems or developer infrastructure; strong C++ and Python/Rust/C; experience with simulation/test/validation frameworks; CI/CD, Docker; distributed/cloud compute; Jenkins/GitHub Actions; Terraform.
C++, Python, Rust, C, Docker, Jenkins, GitHub Actions, Terraform, CI/CD, Linux
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Senior Vehicle 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.
2+ YOEUndergraduate or graduate degree in engineering/CS/physics, 2+ years relevant experience (rocketry or complex hardware preferred), strong proficiency in Python/Julia/MATLAB, simulation and software tooling experience, ability to lead multidisciplinary analysis.
Python, Julia, MATLAB, Docker, Continuous Integration/Continuous Deployment (CI/CD)
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Software Engineer - Simulation (Palmdale)
Palmdale, California, United States
$92k-$138k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
0+ YOESTEM degree (BS/MS), experience with SDLC, C/C++/Python, familiarity with simulation environments, experience with listed DevOps tools, active U.S. Secret clearance and ability to obtain SAP.
C, C++, Python, Jira, Crucible, Bitbucket, Subversion, Bamboo, Jenkins, Sonarqube, Fortify, Coverity
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Software Engineer, Engineering Simulation & Automation (Vehicle Engineering)
Hawthorne, California, United States
$125k-$175k/yr OnsiteFull Time
SpaceX
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
1+ YOE1+ years software development; 1+ years in a simulation domain; bachelor’s degree in engineering/CS/data science/math/physics or 4+ years in lieu of degree.
ANSA, Star-CCM+, OpenFOAM, Abaqus, OpenTD, CalculiX
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Simulation Engineer I, Arc Vehicle
Playa Vista, California, United States
$71k-$124k/yr OnsiteFull Time
Inversion Space
Inversion Space: Building autonomous re-entry vehicles for global space-to-Earth cargo delivery.
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
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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 - Simulation (Palmdale)
Palmdale, California, United States
$92k-$138k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
2+ YOESTEM bachelor's with 2 years (or STEM master's), SDLC experience, proficiency in C/C++/Python, experience with listed CI/SCM tools, active U.S. Secret clearance and ability to obtain SAP, 2+ years engineering experience.
C, C++, Python, Jira, Crucible, Bitbucket, Subversion, Bamboo, Jenkins, Sonarqube, Fortify, Coverity, AI/ML, Quantum computing, Cloud, Joint Simulation Environment (JSE), Distributed Interactive Simulation (DIS), High-Level Architecture (HLA), AFSIM, NGTS
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Director – Modeling & Simulation Software
El Segundo or Chantilly
$168k-$252k/yr OnsiteFull Time
The Aerospace Corporation
The Aerospace Corporation: Provides technical expertise and research for national space programs.
10+ YOEBachelor's in STEM, 10+ years engineering/scientific experience, track record of technical achievement, experience with C++ or Python, leadership and team-building experience, ability to obtain Top Secret/SCI clearance, occasional domestic travel (<20%).
C++, Python, Java, Go, Rust
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Senior Software Engineer
El Segundo, California, United States
$212k-$286k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
10+ YOERequires 10+ years modeling & simulation or systems engineering/software development experience, active U.S. Secret clearance, bachelor\u0002s degree or equivalent, proficiency in modern programming languages and Git/Linux.
C++, Java, JavaScript, Perl, Python, Visual Basic, Git, Linux, MATLAB/Simulink, Rust, AWS, Azure, CI/CD
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Software Engineer Staff Combat Systems
Palmdale, California, United States
$114k-$201k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Bachelor's in engineering/technical field, experience developing C++ software on Windows and Linux, familiarity with CMake, TCP/UDP and DDS, Agile/Jira experience, ability to integrate and test real-time simulation software; must be a U.S. citizen with active Secret clearance.
C++, Windows, Linux, CMake, TCP, UDP, DDS, Jira, VRSG, OMNI View, AFSIM, HOTAS, DIS, CIGI, Git, hardware-in-the-loop
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Senior Software Engineer
El Segundo, California, United States
$212k-$286k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
10+ YOEActive U.S. Secret clearance, Bachelor's or equivalent,10+ years modeling & simulation or systems/software experience,5+ years modern programming (C++,Java,Python,etc.),Git/Linux experience.
C++, Java, JavaScript, Perl, Python, Visual Basic, Git, Linux, MATLAB, Simulink, Rust, AWS, Azure
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Modeling & Simulation Software Engineering Intern - Fall 2026
Los Angeles, California, United States
$25-$33/hr OnsiteInternship
Hermeus
Hermeus: Develops high-speed and hypersonic aircraft for defense and transportation.
0+ YOEPursuing a degree in Computer Science, Aerospace Engineering, Electrical Engineering, Applied Mathematics, or related field; proficient in Julia or Python/MATLAB/C++; knowledge of 6DOF dynamics; experience with data validation and modeling; GPA 3.0+; strong communication and teamwork.
Julia, Python, MATLAB, C++
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Software Engineer, Locomotion
El Segundo, California, United States
OnsiteFull Time
GRAM
GRAM: Developing self-replicating robotic systems for space infrastructure.
Robot locomotion experience, learned policy transfer from simulation to hardware, Python and legged-robotics stack proficiency.
Python, MuJoCo, MuJoCo MPC, Drake, Pinocchio, OCS2, Crocoddyl, C++, legged_gym
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Senior Software Engineer - OMS
Fort Worth or Palmdale
$120k-$160k/yr OnsiteFull Time
Lynx Software Technologies
Lynx Software Technologies: Provides secure, safety-certified software for aerospace and defense.
5+ YOEBachelor's in STEM,5+ years C++ development,OMS architecture,Linux C++ mission software,DDS/pub-sub,service-oriented design,interface and ICD work,simulation and integration testing,active Secret clearance required.
C++, Linux, Open Mission Systems (OMS), DDS, Confluence, JIRA, Bitbucket, Java, FACE, Modular Open Systems Approach (MOSA)
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