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 is seeking a software engineer skilled with 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)

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

• Develops and maintains simulation models and environments utilizing diverse programming languages, tools, and data sources.
• Integrates simulation capabilities within broader system architectures, supporting Naval Capabilities Integration Process (NCIP) initiatives for interoperability testing.
• Partners with engineers, analysts, and operational subject matter experts to improve model fidelity and ensure simulation accuracy.
• Adds new functionalities, performs model testing and validation, and resolves issues across evolving simulation platforms.
• Leads and contributes 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, 401k
• Long-term program (funded through 2027)

/sci, top secret, top secret/sci, polygraph, SAP, special access program, hiring, opentowork, onsite, DoD, Marine Corp, SQL, c#, Java, Python, 3D, Agile, SCRUM, simulation, sysML, Navy, Modsim, 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.