Senior Software Engineer

Modern Technology Solutions, Inc. (MTSI) is hiring a Senior Software Engineer in Springfield, VA. Qualified candidates must be U.S. citizens with a TS/SCI clearance and CI Polygraph.

Responsibilities:

• Support AI/ML Test & Evaluation (T&E) activities for mission-critical national security programs.
• Leads the development and maintenance of the technical and process foundation required for consistent, traceable, and repeatable execution of MT&E, ST&E, and HMTT&E activities across the program.
• Design and implement the operational ST&E environment by provisioning virtual infrastructure and integrating tools, data pipelines, and evaluation capabilities that replicate deployed operational model environments.
• Develops and maintains the authoritative T&E framework used to standardize evaluation workflows, test execution, reporting, and operational data integration across diverse AI/ML models and mission systems.
• Works closely with stakeholders, engineers, data scientists, and the mission team to establish scalable and auditable evaluation workflows that support mission-focused operational testing and repeatable AI/ML assessment activities across evolving operational environments.
• Integrate virtual infrastructure, tools, data pipelines, and evaluation capabilities that replicate deployed operational model environments.
• Document T&E processes, tools, metrics, data flows, and evaluation methodologies supporting repeatable operational assessments.
• Support development of auditable workflows and operational frameworks aligned with mission objectives and compliance requirements.
• Resolve technical integration issues affecting evaluation consistency, operational scalability, and workflow reliability.
• Support automation, orchestration, and optimization of operational AI/ML evaluation workflows across evolving environments.
• Contribute to technical documentation, system architecture development, operational reporting, and customer briefings.

Qualifications Required:

• 8+ years of demonstrated experience supporting software engineering, system integration, or operational platform development activities.
• Experience developing scalable applications, workflows, or infrastructure supporting mission or enterprise environments.
• Familiarity with cloud-based architectures, virtual infrastructure, APIs, and automated deployment pipelines.
• Experience supporting software development lifecycle activities within Agile or DevSecOps environments.
• Strong analytical, troubleshooting, and technical communication skills.

Education Requirements:

• Bachelor's Degree in software/systems engineering or similar field, or additional relevant experience in lieu of a degree.

Desired Qualifications:

• Experience supporting DoD, NGA, or Intelligence Community programs.
• Familiarity with AI/ML operational environments, evaluation pipelines, and testing frameworks.
• Experience with containerization technologies, orchestration frameworks, CI/CD pipelines, and cloud-native development.
• Familiarity with operational data pipelines, workflow automation, and scalable evaluation architectures.
• Experience supporting mission-focused T&E or operational AI/ML environments.

Clearance Requirements:

• Active TS/SCI clearance and the ability to pass a CI polygraph within 30 days.

The pay range for this position is $130,000 to $170,000/year; however, base pay offered may vary depending on established government contract ranges, job-related knowledge, skills, and experience, and other factors. MTSI also offers a full range of medical, financial, and other benefits, dependent on the position offered. Base pay information is based on market location. Applications will be accepted on an ongoing basis. This posting will be renewed periodically until the position is filled.

#LI-RC2

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  Interesting Work:
  
  
  
  Our co-workers support some of the most important and critical programs to our national defense and security.
  
  
  
  
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  Values:
  
  
  
  Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry.
  
  
  
  
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  100% Employee Owned:
  
  
  
  We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year.
  
  
  
  
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  Great Benefits - Most Full-Time Staff Are Eligible for:
  
  
  
  
  
• Starting PTO accrual of 20 days PTO/year + 10 holidays/year
  
  
• Flexible schedules
  
  
• 6% 401k match with immediate vesting up to $9k annually
  
  
• Semi-annual bonus eligibility (July and December)
  
  
• Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account
  
  
• Up to $10,000 in annual educational reimbursement
  
  
• Other company funded benefits, like life and disability insurance
  
  
• Optional zero deductible Blue Cross/Blue Shield health insurance plan
  
  





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  Track Record of Success:
  
  
  
  We have grown every year since our founding in 1993.
  
  
  
  

Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance

MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide.

For more information about MTSI, please visit

MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.