Simulation Engineer

Systems; Colorado Springs (CO); On-site; USD 120,000 - 150,000; Full time

Job summary

NextGen Federal Systems seeks an experienced AFSIM Scenario Developer to support N&NC mission areas through advanced modeling, simulation, analysis, and scenario development. Build high‑fidelity operational scenarios for planning, experimentation, and wargaming activities.

The role requires 5+ years in aerospace/defense with AFSIM, and an active TS/SCI clearance; you will create space, air, land, and maritime models, implement BAM techniques, run Monte Carlo simulations, and document

Qualifications

• BS or equivalent in Computer Science, Engineering, Mathematics, or equivalent technical degree.
• 5+ years’ prior work experience in the aerospace or defense industry, with demonstrated AFSIM experience.
• Must have an active Top-Secret SCI (TS/SCI) security clearance.
• Demonstrated proficiency and experience in the AFSIM development environment.
• Strong understanding of military operations across space, air, land, and maritime domains.
• Experience developing behavior models, agent-based simulations, or Monte Carlo analytical methods.
• Ability to translate government specifications into fully functional AFSIM scenarios and platform models.
• Experience documenting technical interfaces and providing user instructions.
• Ability to produce clear, professional reports and briefing materials.

Responsibilities

• Build scenarios in the AFSIM software environment that accurately represent N&NC interests and mission areas.
• Support development of CONPLAN materials, Table-Top Exercises (TTX), wargames, and select experimentation projects using AFSIM-based modeling and simulation (M&S) products.
• Align all scenarios with core mission areas, including representations of Golden Dome and Border missions.
• Develop realistic representations of space, air, land, and sea platforms, including sensors, communication links, and behavior models.
• Implement Behavior and Agent Modeling (BAM) techniques and utilize Monte Carlo methods for scenario execution.
• Save scenarios, platforms, and related objects in a data repository to ensure standardization and future reuse.
• Develop interfaces for import/export between AFSIM and other software entities
• Document interface designs and produce user instructions.
• Run AFSIM simulations in support of N&NC analysis tasks and overall M&S efforts.
• Build and execute AFSIM scenarios for CONPLAN development, TTXs, wargames, and experimentation projects as tasked.
• Prepare and deliver data outputs, written reports, and briefing products as required by the Government.

Skills

TS/SCI clearance

AFSIM experience

Military operations understanding

Education

BS or equivalent in Computer Science, Engineering, Mathematics, or equivalent technical degree

Tools

AFSIM development environment

Monte Carlo methods

Job description

NextGen is seeking an experienced AFSIM Scenario Developer to support North American Aerospace Defense Command (N&NC) mission areas through advanced modeling, simulation, analysis, and scenario development. The ideal candidate will be highly proficient in the AFSIM environment and capable of building high‑fidelity operational scenarios that support planning, experimentation, and wargaming activities.

Responsibilities

• Build scenarios in the AFSIM software environment that accurately represent N&NC interests and mission areas.
• Support development of Concept Plan (CONPLAN) materials, Table-Top Exercises (TTX), wargames, and select experimentation projects using AFSIM-based modeling and simulation (M&S) products.
• Align all scenarios with core mission areas, including representations of Golden Dome and Border missions.
• Develop realistic representations of space, air, land, and sea platforms, including sensors, communication links, and behavior models.
• Implement Behavior and Agent Modeling (BAM) techniques and utilize Monte Carlo methods for scenario execution.
• Save scenarios, platforms, and related objects in a data repository to ensure standardization and future reuse.
• Develop interfaces for import/export between AFSIM and other software entities
• Document interface designs and produce user instructions.
• Run AFSIM simulations in support of N&NC analysis tasks and overall M&S efforts.
• Build and execute AFSIM scenarios for CONPLAN development, TTXs, wargames, and experimentation projects as tasked.
• Prepare and deliver data outputs, written reports, and briefing products as required by the Government.

Qualifications

• BS or equivalent in Computer Science, Engineering, Mathematics, or equivalent technical degree
• 5+ years’ prior work experience in the aerospace or defense industry, with demonstrated AFSIM experience
• Must have an active Top-Secret SCI (TS/SCI) security clearance
• Demonstrated proficiency and experience in the AFSIM development environment.
• Strong understanding of military operations across space, air, land, and maritime domains.
• Experience developing behavior models, agent-based simulations, or Monte Carlo analytical methods.
• Ability to translate government specifications into fully functional AFSIM scenarios and platform models.
• Experience documenting technical interfaces and providing user instructions.
• Ability to produce clear, professional reports and briefing materials.

About NextGen

NextGen Federal Systems is an innovative technology and professional services provider specializing in advanced software solutions and comprehensive mission and business support services. We work in close collaboration with our customers to truly understand their business and mission goals. Our approach is to design, build, implement, and manage solutions that measurably improve our client’s organizational performance. We have established and foster a corporate culture where we:

• Treat employees with fairness and respect regardless of their position, sexual identity, race, or tenure.
• Communicate the importance of our mission and our employees' contributions to it, ensuring they understand how their job role contributes to the greater good.
• Openly promote and communicate our ideas for change and adaptability.
• Strive to achieve results as an organization.
• Hold employees accountable to their commitments and provide incentives that encourage positive and productive behaviors.
• Value the talents and contributions of our employees as the key factor for our success.
• Create an environment where people can engage at all levels.
• Encourage people to take risks and allow them to make mistakes.

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities.

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