Cyber Security Systems Engineer

• Develop and implement system security plans, policies, and controls in accordance with DoD and NIST standards (e.g., RMF, NIST SP 800-53).
• Conduct cybersecurity risk and vulnerability assessments and develop mitigation strategies.
• Support architecture and design reviews from a security perspective.
• Coordinate with cross-functional teams to ensure cybersecurity is integrated early in the systems engineering process.
• Assist with security test and evaluation (ST&E), including validation, verification, and accreditation efforts (e.g., ATO/ATC).
• Contribute to Program Protection Plans (PPPs), Security Classification Guides (SCGs), and related security documentation.

• Bachelor's degree in Systems Engineering, Cybersecurity, Computer Science, or a related field (or equivalent experience).
• 5+ years of experience in cybersecurity or systems security engineering within a DoD environment.
• Familiarity with RMF, NIST SP 800 series, and DoDI 8510.01.
• Experience supporting system accreditation packages and security documentation.
• Active Top Secret clearance with SCI eligability required.
• DoD 8570 IAT Level II or III certification (e.g., Security+, CISSP, CASP+) required.

• Experience supporting classified DoD systems, weapon systems, or multi-domain platforms.
• Knowledge of supply chain risk management (SCRM), anti-tamper, and secure architecture design.
• Familiarity with cybersecurity tools such as ACAS, Nessus, STIG Viewer, and Splunk.
• Experience working closely with ISSMs/ISSEs and government security stakeholders.

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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:
  
  
  




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  Starting PTO accrual of 20 days PTO/year + 10 holidays/year
  
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  Flexible schedules
  
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  6% 401k match with immediate vesting
  
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  Semi-annual bonus eligibility (July and December)
  
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  Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account
  
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  Up to $10,000 in annual tuition reimbursement
  
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  Other company funded benefits, like life and disability insurance
  
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  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 www.mtsi-va.com