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Information Systems Security Engineer (ISSE)

Tetrad Digital Integrity LLC
Posted 8 days ago, valid for 22 days
Location

Fort Belvoir, VA, US

Salary

Competitive

Contract type

Full Time

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Sonic Summary

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  • Tetrad Digital Integrity (TDI) is seeking an Information System Security Engineer (ISSE) with an active Secret Clearance for onsite support at Fort Belvoir, five days a week.
  • Candidates should possess a Bachelor of Science degree in a related field and have 10-15 years of overall experience, or 5-10 years of DoD/DoW experience with a degree.
  • The role requires strong communication skills and familiarity with the DoD Risk Management Framework (RMF), along with experience in cybersecurity tools such as eMASS and ACAS.
  • Responsibilities include managing authorization packages, documenting vulnerabilities, and ensuring compliance with DISA Security Technical Implementation Guides (STIGs).
  • Salary details are not provided, but candidates must hold a DoD 8570 IAT Level II certification (e.g., Security+ CE, CYSA+, or CASP+ CE).
Tetrad Digital Integrity (TDI) is a cybersecurity firm built for high-consequence environments where mission, complexity, and trust intersect. Our single focus has been delivering cyber solutions to effectively manage risk & the business of cyber for 25 years!

We are seeking an ISSE with an active Secret Clearance to provide onsite customer support at the Fort Belvoir customer site, 5 days a week for a Department of War combat support agency focused on protecting the United States and its allies from weapons of mass destruction (WMD) and emerging threats. DTRA supports the warfighter by delivering technical, operational, and strategic capabilities that help deter strategic attacks, reduce and counter WMD threats, and strengthen national security and mission readiness.

RESPONSIBILITIES:Ā 
  • Must possess excellent written and oral communication skills, with an ability to brief Program Management, Government customers (to include System Owner and/or COR) and Government Cybersecurity personnel.Ā  Briefings might be daily, weekly, monthly or on an ad-hoc basis. Must be detail oriented.
  • Strong understanding of the DoD Risk Management Framework (RMF) and experience with tools such as Enterprise Mission Assurance Support Service (eMASS), ESS/HBSS, ACAS, patching solutions, etc.
  • Create and manage authorization packages in eMASS for two enclaves.Ā  Collaborate with cybersecurity teams to support Authorization to Operate (ATO) packages, Plans of Action & Milestones (POA&Ms), and audit readiness, while maintaining detailed system documentation.
  • Document and manage vulnerabilities in a Plan of Actions and Milestones (POA&M) and provide updates on open vulnerabilities to Program Management and Government personnel.
  • Implement and maintain security controls in compliance with DISA Security Technical Implementation Guides (STIGs) and DoD cybersecurity policies to ensure the secure configuration of all systems.
  • Perform system hardening, patching, and vulnerability remediation using tools such as the Assured Compliance Assessment Solution (ACAS) and Endpoint Security Solutions (ESS).
  • Apply and manage patches and updates across all Linux and Windows systems in accordance with DoD patch management policies, ensuring timely remediation of vulnerabilities.
  • Expertise in Windows Server and/or Linux (RHEL) administration, virtualization technologies (VMware, Hyper-V, Nutanix), and a comprehensive understanding of networking fundamentals, including routing, DNS, and firewalls.
  • Hands-on experience with DoD-specific security tools such as ACAS, ESS (formerly HBSS), and Security Content Automation Protocol (SCAP) or other STIG tools.
QUALIFICATIONS:Ā 
  • Ā Bachelor of Science degree in a relatedĀ area
  • 10-15 overall years of experience. Can have less overall YOE with a degree with 5 – 10 years of DoD/DoW experience in systems support and cybersecurity
  • DoD 8570 IAT Level II certification (such as Security+ CE, CYSA+, or CASP+ CE) is required

Ā 

TDI does business with the federal government, which restricts employment to individuals who are either US citizens or lawful permanent residents of the United States.

ā€œTDI is an Equal Opportunity Employer. Employment decisions are made based on individual qualifications, merit, and business needs. We do not discriminate in employment opportunities or practices based on race, color, religion, sex, or national origin, in accordance with applicable federal laws.ā€




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