Modeling and Simulation Software Engineer

Leidos is seeking a Modeling and Simulation Software Engineer to support development and sustainment of a multispectral, few-on-few C++ simulation environment. The position is based in Beavercreek, Ohio and requires an active Secret security clearance.

Location and Clearance

Location: Beavercreek, OH (onsite)

Security Clearance: Active and current Secret clearance

Role Summary

In this role, you will integrate an infrared threat simulation into a multispectral few-on-few C++ based simulation environment. Responsibilities include design, implementation, testing, and documentation to support a government customer’s requirements.

Responsibilities

• Support integration of an infrared threat simulation into a multispectral few-on-few C++ simulation environment
• Coordinate with a team of engineers and participate in team tasking
• Collaborate with government and contractor personnel
• Contribute to design and implementation of tools that support wider multispectral simulation efforts
• Test and evaluate implementations, provide feedback to the developmental team and team partners
• Develop, code, and test software, and prepare documentation requested by the government customer

Required Qualifications

• Education and Experience: Bachelor’s degree in CS, CE, EE, or a related field with 4+ years of applicable experience, or a Master’s degree in CS, CE, EE, or a related field with 2+ years of experience
• Experience with C++ and Linux
• Experience with modeling and simulation (M&S) techniques
• Excellent English-language written and verbal communication, with strong emphasis on writing ability
• Strong people skills and interest in working with technical teams of engineers and scientists
• Ability to work independently and meet deadlines in a mixed government-contractor environment
• Current and active Secret security clearance (required to be considered)

Technologies

• C++
• Linux
• Python
• GPU compute
• HPC resources

Preferred Qualifications

• Experience with modeling and simulation, Python, GPU compute, HPC resources, EO/IR sensor phenomenology, and infrared threat systems
• Prior experience with Department of Defense software applications

Compensation

• Pay Range: $87,100 - $157,450 per year

Benefits

• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

Additional Information

Original posting date: November 2, 2026

U.S. positions: While subject to change based on business needs, Leidos reasonably anticipates the job requisition will remain open for at least 3 days with an anticipated close date no earlier than 3 days after the original posting date listed above.