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# Systems Engineer - Sr

- **Company:** Nalley Consulting
- **Location:** Reston, VA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), 3d Models, Systems Engineering, C++ (Programming Language), Python (Programming Language), MATLAB, Monte Carlo Methods, Software Engineering, High Performance Computing, Information Technology, Modeling and Simulation, Ansys
- **Published:** May 20, 2026
- **Apply:** https://www.clearancejobs.com/jobs/8924309/systems-engineer-sr

## About the Role

Required clearance: TS/SCI with willingness to take CI poly. Candidates with current CI poly taken within the past seven years will be prioritized.

Required experience: At least 11 years
Required education: Master's or PhD in Engineering, Physics, Applied Mathematics, Computer Science, or a related field and 11+ years relevant experience in modeling and simulation within a defense or national security environment., * Demonstrate proficiency in software development and coding in languages such as Python, C++, MATLAB, or Java.

 * Develop modeling and simulation and conduct computational analysis, Monte Carlo simulations, multi-physics modeling, or agent-based modeling.
 * Use high-performance computing (HPC) environments to run simulations.
 * Work with tools such as Ansys, Ansys STK, IMEA or similar modeling (and DTRA) modeling software.
 * Use M&S tools to conduct vulnerability analyses and develop kinetic/non-kinetic defeat mechanisms.
 * 11+ years relevant experience in modeling and simulation within a defense or national security environment.

## Description

Nalley Consulting has an opportunity for an experienced Systems Engineer to support on-going research and development efforts for functional characterization of WMD facilities and their associated design.


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