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Added 13 hours ago
Software Developer
Torch Technologies, Inc.
Huntsville, AL
…network engineers, network/server administrators, and a dedicated engineer, you will contribute to a culture of security and automation throughout the software development lifecycle. This…
Added 15 hours ago
M&S Engineer
Modern Technology Solutions Inc
Dayton, OH · Dayton
Modern Technology Solutions, Inc. (MTSI) is seeking a Modeling and Simulation (M&S) Engineer. You will support a small, highly empowered team at our Dayton, OH location where every team…
Added 16 hours ago
Modeling and Simulation Engineer
SAIC
El Segundo, CA
SAIC is seeking a Modeling & Simulation Software Engineer on the Horizon 2 contract to support the United States Space Force Portfolio Acquisition Executive organization for Space Combat…
Added 20 hours ago
SS
Modeling Simulation Software Engineer
Space Systems Integration
El Segundo, CA
- $140,000 to $210,000 USD / year
SSI is seeking a Modeling Simulation Software Engineer for a role in El Segundo, CA.
Added 1 day ago
Manager, Systems Engineer (Operations Analysis - Model and Sim) - Top Secret Clearance
L3Harris
Herndon, VA
L3Harris Technologies is seeking a Manager, Systems Engineering in Modeling, Simulation & Analysis (MS&A) to join the Mission Analysis Group (MAG) in Herndon, VA. In this role, the selected…
Added 6 days ago
Junior Modeling and Simulation Engineer
Radiance Technologies, Inc.
DAYTON, OH
…educational reimbursement, competitive salaries, and a pleasant work environment combine to make Radiance Technologies a great place to work and succeed. We are searching for a talented…
Added 7 days ago
Modeling & Simulation (M&S) Engineer - Senior
Modern Technology Solutions Inc
Nellis AFB, NV · Nellis AFB
A Multi-Domain M&S Engineer evaluates complex defense architectures across air, land, sea, space, and cyber domains using advanced software tools like AFSIM (Advanced Framework for…
Added 7 days ago
Missile Defense Systems Architecture Engineer
Chenega Corporation
Ft Belvoir, VA
Venturi, LLC A Chenega Company has an exciting career opportunity for a Missile Defense System Architecture Engineer who will participate in analysis of future Missile Defense System (MDS)…
Added 7 days ago
Senior Missile Defense System Architecture Engineer
Chenega Corporation
Ft Belvoir, VA
Venturi, LLC A Chenega Company has an exciting career opportunity for a Senior Missile Defense System Architecture Engineer who will participate in analysis of future Missile Defense System…
Added 7 days ago
Senior Missile Defense System Architecture Engineer
Chenega Corporation
Ft Belvoir, VA
Venturi, LLC A Chenega Company has a challenging career opportunity for a Senior Missile Defense System Architecture Engineer who will participate in analysis of future Missile Defense…
Added 7 days ago
Modeling & Simulation Engineer, Mid
BOOZ, ALLEN & HAMILTON, INC.
McLean, VA
This role is more than just a simple modeling & simulation analyst role. As a modeling & simulation engineer at Booz Allen, you'll use your passion to master new tools and techniques and…
Added 7 days ago
Senior Missile Defense System Architecture Engineer
Venturi
Ft Belvoir, VA
Venturi, LLC A Chenega Company has an exciting career opportunity for a Senior Missile Defense System Architecture Engineer who will participate in analysis of future Missile Defense System…
Added 7 days ago
Senior Missile Defense System Architecture Engineer
Venturi
Ft Belvoir, VA
Venturi, LLC A Chenega Company has a challenging career opportunity for a Senior Missile Defense System Architecture Engineer who will participate in analysis of future Missile Defense…
Added 7 days ago
Missile Defense Systems Architecture Engineer
Venturi
Ft Belvoir, VA
Venturi, LLC A Chenega Company has an exciting career opportunity for a Missile Defense System Architecture Engineer who will participate in analysis of future Missile Defense System (MDS)…
Added 8 days ago
SS
Multi-Domain Sensing Engineer/Model Simulation Analyst
Space Systems Integr
Colorado Springs, CO
- $180,000 to $230,000 USD / year
…technical challenges. SSI is seeking a Multi-Domain Sensing Engineer/Model Simulation Analyst for a role in Colorado Springs, CO. This position requires significant technical understanding…
Added 8 days ago
IG
Secret Software Engineer Lead
Insight Global
Colorado Springs, CO
- From $85 USD / hour
Insight Global is seeking a highly skilled Senior Software Engineer to lead a small Agile team supporting the Operational Test and Training Infrastructure (OTTI) for the U.S. Space Force…
Added 8 days ago
TA
Payload & Mission Engineer - SDA Tracking Architecture
The Aerospace Corpor
Colorado Springs, CO
- $166,400 to $249,600 USD / year
Minimum Requirements - Senior Project Engineer - Signal & Image Processing and Modeling & Simulation Engineering:
Added 9 days ago
Payload & Mission Engineer - SDA Tracking Architecture
The Aerospace Corporation
Chantilly, VA · Huntsville, AL · Hill AFB, UT · Colorado Springs, CO · El Segundo, CA · Cape Canaveral AFS, FL · Albuquerque, NM
Minimum Requirements - Senior Project Engineer - Signal & Image Processing and Modeling & Simulation Engineering:
Added 9 days ago
Sr Manager, Systems Engineer (Operations Analysis - Model and Sim) - Top Secret Clearance
L3Harris Technologies
Herndon, VA
L3Harris Technologies is seeking a Manager, Systems Engineering in Modeling, Simulation & Analysis (MS&A) to join the Mission Analysis Group (MAG) in Herndon, VA. In this role, the selected…
Added 9 days ago
Sr Specialist, Systems Engineer (Operations Analysis - Model and Sim) - Top Secret Clearance
L3Harris Technologies
Palm Bay, FL · Herndon, VA
L3Harris Technologies is seeking a Senior Specialist, Systems Engineering in Modeling, Simulation & Analysis (MS&A) to join the Mission Analysis Group (MAG) in Herndon, VA. In this role,…
Added 9 days ago
Lead, Systems Engineer (Operations Analysis - Model and Sim) - Top Secret Clearance
L3Harris Technologies
Herndon, VA · Palm Bay, FL
L3Harris Technologies is seeking a Lead, Systems Engineering in Modeling, Simulation & Analysis (MS&A) to join the Mission Analysis Group (MAG) in Herndon, VA. In this role, the selected…
Added 9 days ago
Scientist, Systems Engineer (Operations Analysis - Model and Sim) - Top Secret Clearance
L3Harris Technologies
Palm Bay, FL
L3Harris Technologies is seeking a Scientist, Systems Engineering in Modeling, Simulation & Analysis (MS&A) to join the Mission Analysis Group (MAG) in Herndon, VA. In this role, the…
Added 11 days ago
Principal Modeling and Simulation Engineer
SRC, INC.
Fairborn, OH
Principal Modeling and Simulation Engineer to support the research and development of Radio Frequency (RF) Electronic Warfare (EW) technologies.
Added 11 days ago
Mission Analysis Engineer (Mid-career) - Millennium Space Systems
The Boeing Company
El Segundo, CA
As a Mission Analysis Engineer on the Mission Analysis Engineering Team, you will be the Responsible Engineering Authority (REA) for all modeling, simulation, and analysis for a program,…
Added 11 days ago
Mission Analysis Engineer (Senior) - Millennium Space Systems
The Boeing Company
El Segundo, CA
As a Mission Analysis Engineer on the Mission Analysis Engineering Team, you will be the Responsible Engineering Authority (REA) for all modeling, simulation, and analysis for a program,…

Space Systems Integration

Modeling Simulation Software Engineer

El Segundo, CA, United States

$140,000 to $210,000 USD / year

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Job details

Pay: $140,000 to $210,000 USD / year
Posting language: English
Posted: Oct 26, 2026

Original job description

Space Systems Integration (SSI) is a fast-growing engineering company that provides aerospace solutions to a variety of government and commercial customers. Our employees are forward-thinking, self-directed individuals who are committed to solving our customers’ technical challenges.

SSI is seeking a Modeling Simulation Software Engineer for a role in El Segundo, CA.

Role and Responsibilities include:

Be a member of a fast-paced multidisciplinary mission operations modeling, simulation, and analysis team informing the United States Space Force acquisition decision process.
Your background and interest in simulation development will be highly valued in developing and testing simulation applications. You'll be integrating mission simulation tools into an automated system-level trade study execution architecture.
You will have a strong hand in defining requirements, specifying designs, and implementing an ever-growing portfolio of space mission operations analysis simulations and trade studies.

Required Qualifications

Bachelors degree in aerospace, astronautics, mathematics, or physics and nine (9) years of experience with:
At least one programming language: MATLAB, Python, Java, C#, or C++.
Live, virtual, and/or constructive (LVC) simulation techniques and technologies.
Simulation development experience with simulation environments such as STK, AFSIM, GMAT, or FreeFlyer.
MATLAB and/or Simulink or other simulation scripting languages.
Preparing and delivering presentations and technical demonstrations.
Satellite orbital mechanics & maneuvers, remote sensing, spacecraft launch/command/control, and/or satellite communications.
Equivalent experience with airborne systems is applicable to this role.
Managing files & directories, network file sharing, installing software & licenses, and command line shell (Windows Cmd or Bash).
Active TS clearance with in-scope T5/SSBI is required, along with SCI eligibility and participation in Continuous Evaluation.
Must meet all requirements for SCI and SAP access and be willing to undergo a polygraph examination.
Travel is 10%

Desired Qualifications:

Simulation software development, test, and integration experience in a team environment. Use of Agile methodology and Atlassian Jira are beneficial.
Prior industry experience in aerospace or space & defense.
Systems engineering, with experience defining and executing trade studies. Engineering methodologies such as Model-Based Systems Engineering (MBSE), Multidisciplinary Design Analysis Optimization (MDAO), or Model-Based Design are a plus. Demonstrated knowledge of supporting toolsets such as Cameo Enterprise Architect, Sparx Systems EA, or Ansys ModelCenter would be helpful.
Participation in engineering peer reviews, both as a developer and as a reviewer.
Advanced degree in engineering with emphasis on applications to space launch, orbit propagation, and maneuvering.
Professional certification (e.g., Professional Engineer, INCOSE CSEP, ITEA CTEP, Agile PM/PO, OMG OCSMP, etc.).

Space Systems Integration provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, or any other characteristic protected by federal, state, or local laws.

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