AFSIM Developer (CSSLP)

VTG Defense; Beavercreek (OH); On-site; USD 120,000 - 160,000; Full time

Job summary

VTG Defense seeks an experienced AFMSIM Developer to provide Modeling, Simulation, and Analysis support to DoD programs. You will design, develop, integrate, and sustain AFSIM-based capabilities while implementing secure software lifecycle practices and CSSLP policy compliance.

Responsibilities include building AFSIM models, plugins, and scenarios, scripting configurations, and collaborating with government engineers to deliver validated simulation solutions for engagement, mission, and

Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, Physics, Mathematics, or related technical discipline.
• 3–5+ years of professional software development experience, including C++ and OO design on Windows or Linux.
• 2+ years of experience developing/integrating/using AFSIM for DoD/IC programs.
• Active CSSLP certification recognized under DoD 8140/8570.
• Experience with secure coding practices and software assurance across the lifecycle.
• Familiarity with DoD cybersecurity and RMF processes.
• Ability to obtain/maintain DoD Secret clearance (active preferred).

Responsibilities

• Design, develop, and integrate AFSIM models, components, and scenarios for government analysis.
• Implement secure software lifecycle practices aligned with CSSLP domains and DoD policies.
• Develop and maintain C++ AFSIM plug-ins, simulations, and interfaces to external tools.
• Apply Python/Lua scripting to configure scenarios, behaviors, and batch runs.
• Conduct code reviews, static analysis, and remediation for secure coding compliance.
• Support configuration management, CI/CD pipelines, and test automation for AFSIM capabilities.
• Collaborate with government engineers and contractors to translate requirements into capabilities.
• Prepare technical docs, test reports, and briefing materials per contract deliverables (CDRLs).
• Provide input to proposals, estimates, and design reviews for MS&A task orders.

Skills

C++

Object-oriented design

Windows

Linux

Scripting (Python/Lua)

Secure coding practices

CSSLP

Security clearance

Education

Bachelor's degree in Computer Science or related technical discipline

Tools

AFSIM

AFSIM plug-ins

Git/CI–CD tooling

Job description

Overview

Seeking an experienced Advanced Framework for Simulation, Integration and Modeling (AFSIM) Developer to provide Modeling, Simulation, and Analysis (MS&A) support to U.S. Department of Defense programs. The selected candidate will design, develop, integrate, and sustain AFSIM-based capabilities while applying secure software lifecycle practices validated by an active CSSLP certification in support of DoD 8140/8570 requirements.

What will you do?

• Design, develop, and integrate AFSIM models, components, and scenarios to support analysis of engagement-, mission-, and campaign-level concepts for government customers.
• Implement secure software lifecycle practices (requirements, design, implementation, testing, deployment, maintenance) consistent with CSSLP domains and DoD cybersecurity policies.
• Develop and maintain C++-based AFSIM plug-ins, simulation entities, behaviors, and interfaces to external tools and data sources.
• Apply scripting (e.g., AFSIM\'s script environment, Python/Lua where appropriate) to configure scenarios, behaviors, and batch runs for government analysis tasks.
• Conduct code reviews, static analysis, and vulnerability remediation to ensure compliance with secure coding standards and program security requirements.
• Support configuration management, CI/CD pipelines, and test automation for AFSIM capabilities delivered under government contracts.
• Collaborate with government engineers, analysts, and other contractors to capture requirements, refine use cases, and translate them into verified, validated simulation capabilities.
• Prepare and deliver technical documentation, test reports, user guides, and briefing materials in accordance with contract deliverable requirements (CDRLs).
• Provide technical input to proposals, estimates, and design reviews for current and future MS&A task orders.

Do you have what it takes?

Required Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, Physics, Mathematics, or related technical discipline.
• 3-5+ years of professional software development experience, including C++ and object-oriented design on Windows or Linux.
• 2+ years of direct experience developing, integrating, or applying AFSIM in support of DoD or IC programs (e.g., scenario development, plugin development, operational analysis).
• Active Certified Secure Software Lifecycle Professional (CSSLP) certification recognized under DoD 8140/8570.
• Experience applying secure coding practices, vulnerability mitigation, and software assurance concepts across the software development lifecycle.
• Familiarity with DoD cybersecurity and risk management processes (e.g., RMF, DoDD 8140/8570 role-based certification requirements).
• Ability to obtain and maintain a DoD Secret clearance; current active Secret or higher strongly preferred.

Desired Qualifications

• Active Secret or Top Secret/SCI clearance.
• Experience supporting Air Force Life Cycle Management Center (AFLCMC), Air Force Research Laboratory (AFRL), or other acquisition and S&T organizations in the Dayton/Beavercreek area.
• Experience with MS&A of air, space, or multi-domain operations, electronic warfare, or command and control systems.
• Experience with Python or other scripting languages for data processing, automation, and tool integration.
• Familiarity with DevSecOps practices, Git-based workflows, and modern CI/CD tools used in DoD environments.
• Prior experience working as a government contractor on cost-type or CPFF contracts, including adherence to CDRLs and program processes.

Work Environment and Travel

• Position is primarily on-site at government or contractor facilities in the Beavercreek/Dayton, OH area, with limited telework as authorized by the customer.
• Occasional travel (up to ~10%) to customer sites, test locations, or program reviews may be required.