Demo

Junior Information Systems Security Engineer

MANTECH
Virginia, VA Full Time
POSTED ON 7/29/2026
AVAILABLE BEFORE 8/26/2026
MANTECH seeks a motivated, career and customer-oriented Junior Information Systems Security Engineer (ISSE) to join our team in Virginia Beach, VA. This is a hybrid position with 2-3 days onsite and 2-3 days remote.

This critical role focuses on the full lifecycle of cybersecurity engineering, from initial system design to maintaining a Continuous ATO (cATO) posture through diligent Annual Security Reviews (ASRs).

Responsibilities Include But Are Not Limited To

  • Performing cyber security research under NAVSEA for cloud and network solutions
  • Assist in identifying information protection needs and defining security requirements for Information Systems (IS) and Cloud Network Environments.
  • Support the design of security architecture and the implementation of specific cybersecurity countermeasures.
  • Assist in cyber incident reviews and reporting. Conduct onsite SIPR-based research to retrieve and analyze incident data classified at the Secret level.
  • Assist in performing Interconnection Approval (IAP) requests, Boundary Change Requests (BCRs), Privacy Impact Assessments (PIA), and Ports, Protocols, and Services Management (PPSM).
  • Participate in Authorization to Operate (ATO) efforts using RMF, NIST 800-series, and Navy-specific guidance.
  • Assist with auditing and updating IL5 & IL6 eMASS instances, including inheritance, POA&M, hardware, software, DADMS, diagrams for Secure Cloud Computing Architecture and Cloud Hosting Environments.
  • Lead self-assessments and STIG reviews to ensure system hardening compliance.
  • Manage the annual security review of full ATO packages to ensure on-time submission, extending accreditation dates and maintaining the Continuous ATO model.
  • Track tasks via GitHub, creating and maintaining metadata (milestones, projects, descriptions and board linkages).
  • Collect and integrate the latest Navy guidance to ensure issue templates and security documentation remain current.

Minimum Qualifications

  • Bachelor’s degree in Computer Science, IT, Engineering, or a related technical field and 1 year of relevant Information Systems experience OR High School diploma and 4 years of relevant Information Systems experience may be substituted in lieu of degree
  • Active Security Certification (or other DoD 8570/8140 IAT Level II compliant certification).

Preferred Qualifications

  • Knowledge of Navy Cloud brokerages and DoD and Navy-specific RMF guidance.
  • Experience with GitHub for project tracking or documentation management.
  • Familiarity with Federal compliance standards: FISMA, NIST Cybersecurity Framework, and FedRAMP.
  • Understanding of technology for implementing security controls (Access Control, PAM, Data Loss Prevention, and Configuration Management).

Clearance Requirements

  • Must be able to obtain and maintain an active Secret security clearance.

Physical Requirements

  • The person in this position must be able to remain in a stationary position 50% of the time.
  • Must be able to move around the office and operate office equipment.
  • Frequently communicate with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.

Salary.com Estimation for Junior Information Systems Security Engineer in Virginia, VA
$70,903 to $84,343
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