System Security Engineer

DMI is a leading provider of digital services and technology solutions, headquartered in Tysons Corner, VA. With a focus on end-to-end managed IT services, including managed mobility, cloud, cybersecurity, network operations, and application development, DMI supports public sector agencies and commercial enterprises around the globe. Recognized as a Top Workplace, DMI is committed to delivering secure, efficient, and cost-effective solutions that drive measurable results. Learn more at www.dminc.com

DMI, LLC is seeking a System Security Engineer to join us.

Duties and Responsibilities:

• Security Assessment & Authorization (SA&A)
  • Lead the preparation, submission, and lifecycle maintenance of full Certification & Accreditation (C&A) packages for ISB systems (e.g., Azure, Consolidated Statistical Platform, OCIO ISB Infrastructure Services).
  • Develop and maintain documentation in Archer.
  • Coordinate with CSPO to ensure federal SA&A elements are accurate, complete, and compliant.
• Enhanced Security Control Evaluation Audits (ESCA)
  • Provide complete and accurate security control evidence for CSPO audits.
  • Resolve findings and update documentation (BSI, BCP, SSP, ATT, PIA, ATO) in Archer based on CSPO review and feedback.
• Security Evaluation & Approvals
  • Verify and validate security control implementations across ISB managed systems.
  • Track vulnerabilities, remediation plans, and mitigation activities.
  • Review and approve system configuration changes via ServiceNow or similar change control platforms.
  • Ensure alignment with NIST 800-53a assessment procedures.
• Risk Management Framework (RMF)
  • Apply ITIL processes to document security-related policies and procedures.
  • Maintain accountability, records retention, and documentation consistent with RMF requirements.
• Physical Security – Data Center Access
  • Manage and maintain Access Control Lists (ACLs) for data center smart card physical security.
• Federal Regulation & Compliance
  • Ensure compliance with:
    • Federal IT security laws
    • OMB circulars
    • Presidential Decision Directives (PDDs)
    • FISMA requirements
    • Other federal regulations and guidance
    • Monitor CSPO alerts and implement required updates to ISB managed systems

Years of Experience and Certifications:

• 3+ years of experience.
• Proficiencies in Microsoft Word, Excel, and Adobe PDF tools.
• Certified Information Systems Security Professional (CISSP) is required.

Required and Desired Skills: 

• Advanced Information Security experience, including deep knowledge of NIST and/or ISO frameworks.
• Expertise with NIST 800-53, including control interpretation, assessment, and documentation (this constitutes ~75% of the role).
• Demonstrated experience writing and maintaining Security Control responses and compliance documentation.
• Experience with ServiceNow or similar change control systems (can be learned on the job).
• Experience with Archer governance, risk, and compliance (GRC) tools (can be learned on the job).

Clearance Requirements: Successful completion of a Public Trust background investigation and/or a Public Trust clearance.

Min Citizenship Status Required: Must be a U.S. Citizen

Physical Requirements: No physical requirement is needed for this position.

Location: Remote, US

DMI is a diverse, prosperous, and rewarding place to work. Our culture is shaped by five core values that guide how we work, grow, and succeed together:

• Do What’s Right – We lead with honesty and integrity.
• Own the Outcome – We take responsibility and deliver.
• Deliver for Our Customers – We are relentless about delivering value.
• Think Bold, Act Smart – We innovate with purpose.
• Win Together – We collaborate and celebrate our success.

These values aren’t just ideals—they show up in how we support every part of your well-being:

• Convenience/Concierge – Virtual health visits, commuter perks, pet insurance, and entertainment discounts that make life easier.
• Development – Annual performance reviews, tuition assistance, and internal career growth opportunities to help you thrive.
• Financial – Generous 401(k) matches, life and disability insurance, and financial wellness tools to support your future.
• Recognition – Annual awards, service anniversaries, referral bonuses, and peer-to-peer shoutouts that spotlight your achievements.
• Wellness – Healthcare coverage, wellness programs, flu shots, and biometric screenings to support your health.

DMI values employees for their talents and contributions, and we take pride in helping our customers achieve their goals. Because when we live our values, we all win together.

***************** No Agencies Please *****************

Applicants selected may be subject to a government security investigation and must meet eligibility requirements for access to classified information. US citizenship may be required for some positions.