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Who We Are: Founded in 2007, SimIS Inc. is an innovative information technology solution Veteran Owned Small Business (VOSB) that models future environments, requirements, and capabilities, and then secures the enterprise from internal and external threats compliant with Federal, State, and industry standard governance to ensure client mission success. Our performance standard is "excellence," with an outcomes-based, quality focus in our services and products, guided by our core values of honesty (in word and deed), relationships (confidence and trust with clients and partners), teamwork (shared goals, mission, and purpose), loyalty (allegiance to our client and team), and importance of others (work and win as a team).

SimIS is currently recruiting for the listed position and is contingent upon award.

Job Description:
The ideal candidate will support U.S. military Modeling & Simulation (M&S) efforts with intermediate-level responsibilities in the design, development, integration, and maintenance of simulation systems used for training, analysis, and decision support in defense environments at our Suffolk, Virginia headquarters. The candidate will work with some independence while collaborating with senior developers and contributing to software architecture decisions. This role requires solid experience in software engineering and growing understanding of military systems, simulation standards, and real-time/constructive simulations.

The candidate performs the following specific assignments:

Designs, implements, and maintains simulation software for military training and analysis
Contributes to software architecture decisions and technical design reviews
Integrates models and simulations with C4ISR systems, data sources, and external interfaces using DIS, HLA, and DDS protocols
Translates operational military requirements into scalable and reusable software components
Develops and tests simulation scenarios, models, and system behaviors to meet fidelity and performance requirements
Collaborates with systems engineers, subject matter experts (SMEs), and military users to validate simulation capabilities
Ensures compliance with software development standards, security guidelines, and configuration management practices
Contributes to technical documentation, including design specifications, test plans, and user manuals
Mentors junior developers and participates in code reviews
Supports system integration testing and troubleshooting
Participates in requirements analysis and system design activities

Experience Required:

Master's degree in Computer Science, Software Engineering, Computer Engineering, or related field
OR Bachelor's degree with 3-5 years of relevant software development experience
At least 2 years of software development experience, with exposure to M&S domain preferred
Proficiency in multiple programming languages: C++, C#, Java, or Python
Experience with simulation frameworks such as HLA, DIS, or similar M&S tools
Understanding of software engineering best practices including Agile/Scrum methodologies

Experience Desired:

Experience with DoD M&S standards and tools (STOW, RTI, SISO standards)
Knowledge of CI/CD practices and version control systems
Understanding of military doctrine, tactics, and operational scenarios
Experience with GIS, terrain databases, or synthetic environment generation
Familiarity with containerization technologies (Docker, Kubernetes)
Experience with distributed systems and real-time processing

Special Skills/Knowledge/Training Required/Desired:

Strong analytical and problem-solving skills
Excellent communication and collaboration abilities
Ability to work independently with minimal supervision
Strong debugging and troubleshooting skills
Experience with software testing and quality assurance practices

Benefits:

Medical, Dental, and Vision
Short-Term Disability (at no cost to you) & Long-Term Disability
Life Insurance
401(k) Savings Plan
Flex Spending Accounts
Tuition Assistance Program
Professional Development
Paid Time Off (PTO)
11 Federal Holidays each year

SimIS, Inc. is an EOE / M / F / Disability / VET / Drug Free Employer

About the company

SimIS delivers IT solutions for government and defense, specializing in modeling and simulation, test and evaluation, cybersecurity, and autonomous systems. Its M&S work uses cognitive systems engineering to create executable models and simulations; T&E validates system performance for DoD and DHS; cybersecurity includes compliance support such as CMMC. The company develops autonomous platforms in its robotics lab, including the SimIS Autonomous Maritime System (SAMS) and RiverScout, plus AI/ML, data analytics, software development, and 3D printing. Its model centers on securing prime government contracts and IDIQ vehicles, with services supported by a Tier 3 data center for hosting and managed IT services, aiming to help government customers model, test, secure, and deploy advanced systems.

Company Size

11-50

Company Stage

N/A

Total Funding

N/A

Headquarters

N/A

Founded

2007

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Simplify's Take

What believers are saying

December 2025 SHIELD IDIQ win opens Missile Defense Agency and DoD pipelines.
August 2026 GSA MAS prime status supports recurring federal purchasing and cloud work.
September 2026 Constellis and I/ITSEC presence keeps SimIS visible to buyers and recruits.

What critics are saying

ICE office lease needs Suffolk Council approval; delays block a multi-year revenue stream.
MDA SHIELD positioning still depends on task orders, not guaranteed funded work.
Autonomy demos at I/ITSEC and Constellis do not prove production-scale adoption.

What makes SimIS unique

Veteran-owned Suffolk firm sells cleared modeling, simulation, cyber, and autonomy to defense customers.
GSA MAS prime contract 47QTCA23D0056 runs through February 2043, broadening federal access.
RiverScout and SAMS give SimIS owned robotics platforms, not just staff augmentation.

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Benefits

Health Insurance
Dental Insurance
Vision Insurance
Disability Insurance
Flex Spending Accounts
401(k) Retirement Plan
Tuition Reimbursement
Professional Development Budget
Paid Time Off
Paid Holidays

SimIS

Software Developer 2 - Modeling & Simulation

About the job