Modeling & Simulation Engineer; TS​/SCI

Modeling & Simulation Engineer (TS/SCI)

Zachary Piper Solutions is seeking Modeling & Simulation Software Engineers to support a classified program for G-7 Mission Engineering, Modeling, and Analysis branch in Quantico, VA
. The team requires a software engineer skilled in building and integrating digital models and creating databases to support a mission-critical program.

Clearance: Active TS/SCI clearance (TS minimum)

Location: Quantico, VA (100% onsite)

Recruiting period: This job opens for applications on 12/19/2025. Applications will be accepted for at least 30 days from the posting date.

• Develop and maintain simulation models and environments utilizing diverse programming languages, tools, and data sources.
• Integrate simulation capabilities within broader system architectures, supporting Naval Capabilities Integration Process (NCIP) initiatives for interoperability testing.
• Partner with engineers, analysts, and operational subject matter experts to improve model fidelity and ensure simulation accuracy.
• Add new functionalities, perform model testing and validation, and resolve issues across evolving simulation platforms.
• Lead and contribute to the planning, coordination, and documentation of simulation projects, including data gathering, stakeholder engagement, and capability monitoring.

• Active TS/SCI clearance, Top Secret minimum.
• Bachelor’s degree in STEM and 3+ years of relevant experience in software development, focused on simulation or game‑based environments.
• Proficiency in programming languages such as C++, C#, Python, or Java.
• Experience with simulation platforms or engines such as Unity, Unreal Engine, Simio, or Arena.
• Familiarity with version control systems and collaborative software development workflows.
• Understanding of modeling and simulation principles in military or operational contexts.
• Familiarity with the Naval Capabilities Integration Process (NCIP) and military systems.
• Knowledge of 3D graphics, physics engines, and database management systems (e.g., SQL).

• Total compensation based on experience level – $150,000–$200,000+ (based on years of experience and skill level).
• Full benefits: PTO, 11 paid holidays, sick leave as required by state law, medical, dental, and vision, 401(k).
• Long‑term program (funded through 2027).

Keywords: Modeling and simulation, object-oriented programming, real-time systems, multithreading, concurrency, data structures, algorithms, performance optimization, memory management, simulation frameworks, physics engines, game loops, TS/SCI, top secret, top secret/SCSI, polygraph, SAP, special access program, hiring, open-to-work, onsite, DoD, Marine Corp, SQL, C#, Java, Python, 3D, Agile, SCRUM, simulation, SysML, Navy, Mod Sim, UML, STK, event-driven architecture, developer, software developer, software design patterns, numerical methods, discrete event simulation, agent-based modeling, system dynamics, visualization tools, debugging, unit testing, integration testing, version control, Git, software architecture, API development, hardware interfacing, cross-platform development, compiler optimization, code refactoring, simulation fidelity, interoperability, and high-performance computing.

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Mid‑Senior level

Full-time

Engineering and Information Technology

IT Services and IT Consulting