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219 simulation engineer jobs at 88 companies in Colorado

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System Simulation Engineer
Littleton, Colorado, United States
$89k-$158k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
1+ YOEUS citizen with Secret (able to obtain Top Secret) clearance; experience in flight dynamics, physics-based/time-domain simulations, and programming in C++; familiarity with software configuration tools and verification/validation of simulations.
C++, Git, Artifactory, Nexus, UNIX, LINUX, STK, MBSE, Cameo, HWIL
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1mo
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Mechanical Simulation Engineer
Boulder, Colorado, United States
$100k-$140k/yr OnsiteFull Time
FIRST RF
FIRST RF: Designs and manufactures advanced antennas and radio frequency systems.
5+ YOE5+ years in mechanical engineering with aerospace/defense experience; U.S. citizenship and ability to obtain U.S. Security Clearance; BS in Mechanical Engineering; strong CFD/FEA experience; proficient in CAD/FEA tools; able to work in fast-paced multidisciplinary environment.
Altair/Siemens (HyperMesh, Optistruct, RADIOSS, HyperLife), SolidWorks Simulation, MSC Nastran, NX Nastran, ABAQUS
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Co-Simulation Engineer III
United States or Colorado or California or Illinois or New York or Washington or District of Columbia
$105k-$131k/yr RemoteFull Time
DLB Associates
DLB Associates: Provides engineering and commissioning services for mission-critical data centers.
2+ YOEExperience developing thermo-hydraulic and CFD models, multi-domain co-simulation, validation/calibration, and preparing technical reports; strong thermodynamics, heat transfer, hydraulics knowledge; proficiency with hydraulic and CFD tools; programming and MS Office skills.
Flownex, Siemens Flomaster, Aspen HYSYS, Cadence Reality DC Design, ANSYS Fluent, STAR-CCM+, AutoCAD, Revit, Python, C/C++, MATLAB, Microsoft Excel, Microsoft Word, Microsoft Outlook, Microsoft PowerPoint, Microsoft Teams, BMS/SCADA
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Modeling & Simulation Systems Engineer
Colorado Springs, Colorado, United States
OnsiteFull Time
ASRC Federal
ASRC Federal: Provides engineering and IT services to federal government agencies.
0+ YOEOnsite role requiring DoD Secret clearance, 0-2 years with a Masters or 2+ years with a Bachelor in STEM; experience in modeling/simulation analysis; missile/infrared signature knowledge; scripting with Python, Bash, or MATLAB.
Python, Bash, MATLAB
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Simulation Test Lead
Golden, Colorado, United States
$115k-$160k/yr OnsiteFull Time
Lunar Outpost
Lunar Outpost: Develops autonomous robotic systems and rovers for lunar exploration.
5+ YOEBachelor's in CS/Aerospace or related, 5+ years software testing experience, simulation/HIL/testing of safety-critical systems, proficiency with test tools, automation frameworks, scripting, SDLC and systems engineering; U.S. Person.
Hardware-in-the-loop (HIL), continuous integration, CI/CD, simulators, cFS, VxWorks
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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 Simulation Engineer
Highlands Ranch or Houston or Littleton
$153k-$162k/yr OnsiteFull Time
I2X Technologies
I2X Technologies: Provides mission-critical engineering, cybersecurity, and IT services to government agencies.
9+ YOEBachelor's degree with 9+ years experience (5+ on spacecraft). U.S. citizenship required. Strong C++, Python, Linux, Perforce, DOORS, real-time 6 DoF simulation, MATLAB/Simulink experience and full SDLC knowledge.
C++, Python, Linux, Perforce, DOORS, MATLAB/Simulink, OrionSim, Orion Test Labs, ODN STE
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2mo
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Pulsed Power Modeling and Simulation Engineer
Denver, Colorado, United States
$120k-$160k/yr OnsiteFull Time
Xcimer Energy
Xcimer Energy: Developing laser-driven inertial fusion for commercial clean energy
2+ YOE2+ years in field solver/particle-in-cell/circuit simulation; BS/MS in Mechanical or Electrical Engineering; strong cross-disciplinary communication; US eligibility to work.
COMSOL, CST, LT-SPICE, SolidWorks, NX, Python, MATLAB, VBA, Java
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RF Simulation SW Engineer
Colorado Springs, Colorado, United States
$100k-$150k/yr RemoteFull Time
Auria
Auria: Engineering and software solutions for space and defense missions.
3+ YOEDegree in EE/physics/math/computer engineering or related; 3+ years experience; strong C++ skills; understanding of electromagnetics, radio Tx/Rx modeling or wireless fundamentals; experience with RF modeling/simulation and DevSecOps practices.
C++, NodeJS, Python, DevSecOps, CI/CD
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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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Mission Data & Simulation Integration Engineer
Colorado Springs or El Segundo or Huntsville or Chantilly
$151k-$227k/yr OnsiteFull Time
The Aerospace Corporation
The Aerospace Corporation: Provides technical expertise and research for national space programs.
8+ YOEBachelor’s in STEM; 8+ years software engineering; experience with DE, M&S, cloud; DoD/space domain exposure.
Python, C++, Docker, Kubernetes, Protobuf, Apache Kafka, HLA, DIS, TENA, SQL, NoSQL, ETL, CI/CD
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Software & Simulation Test Design Engineer
Englewood, Colorado, United States
$101k-$189k/yr OnsiteFull Time
ispace
ispaceTokyo Stock Exchange: 9348: Developing robotic spacecraft for lunar transportation and resource exploration.
5+ YOE5+ years in software engineering; proven scalable test frameworks; strong Python/C++/Java; ITAR familiarity; experience with simulations, HIL/SIL; aerospace/defense exposure preferred.
Python, C++, Java, MATLAB/Simulink, ROS, LabVIEW
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Kinematics Modeling & Simulation Systems Engineer - Level 2 or 3
Colorado Springs, Colorado, United States
$83k-$155k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
2+ YOEActive U.S. Secret clearance required. STEM degree preferred. Experience in modeling & simulation, missile/6-DoF trajectories, Linux/Windows, strong communication, and willingness to travel up to 10%.
Linux, Windows, Threat Modeling & Simulation Suite (TMSS)
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Simulation Lead
Greenwood Village or Austin
$130k-$205k/yr OnsiteFull Time
York Space Systems
York Space SystemsNYSE: YSS: Designs and manufactures modular spacecraft platforms and mission solutions.
3+ YOEBachelor's in Aerospace Engineering/CS or related; proficiency in C++ or Python, Git, Linux, bash, Docker; experience with CI/CD (GitLab CI/CD), full-stack/devops, API and networking concepts; ability to manage 5-10 engineers; Top Secret clearance or ability to obtain.
C++, Python, Git, Linux, bash, Docker, Docker Compose, GitLab CI/CD
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1mo
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2026 Associate Modeling & Simulation Systems Engineer - Colorado Springs CO
Colorado Springs or Schriever Air Force Base
$73k-$109k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
Requires active U.S. Secret clearance, STEM degree (B.S. or higher) in aerospace/mechanical/physics, experience with MATLAB/Python/LaTex, strong missile kinematics and simulation knowledge, and ability to obtain Special Access and higher clearances.
MATLAB, Python, LaTex
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AI Factory Thermal Cooling Simulation Engineer
Colorado or Georgia or Illinois or Michigan or North Carolina or Texas
$102k-$211k/yr RemoteFull Time
Siemens
SiemensXETRA: SIE: Manufactures industrial automation, infrastructure, and energy technology systems.
3+ YOEBachelor's in mechanical/thermal engineering,3+ years CFD airflow and heat transfer modeling,hydraulic modeling experience,steady-state and transient simulation capability,domestic travel up to 25%,U.S. work authorization required.
StarCCM+, Amesim, Modelica
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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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Engineer Senior – RF Payload Simulation and Modeling Engineer
Boulder or Westminster or United States
$97k-$165k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
4+ YOEBachelor's in engineering plus 4+ years related experience, active Top Secret/SCI polygraph clearance required, experience with RF system lifecycle and data analysis/modeling for image processing or remote sensing, strong communication skills.
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GNC Engineer, Simulation (Swarm/Vehicle)
Golden, Colorado, United States
$90k-$165k/yr OnsiteFull Time
Rendezvous Robotics
Rendezvous Robotics: Develops self-assembling modular tiles for in-space infrastructure.
Bachelor's in relevant STEM, software development in C++ and Python, experience with high-fidelity dynamics simulation, real-time/embedded systems, and GNC concepts; strong communication and problem solving.
C++, Python, InfluxDB, Grafana, DDS, Git
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Software Engineer II, Model and Simulation
Broomfield, Colorado, United States
$120k-$165k/yr OnsiteFull Time
Katalyst Space Technologies
Katalyst Space Technologies: Develops robotic spacecraft for in-orbit satellite servicing and maneuvering.
3+ YOE3+ years modeling and simulation experience for aerospace missions, expert C++ and Python, BS in STEM, experience with distributed compute and stakeholder-driven development.
C++, Python, Basalisk, STK, GMAT
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