Principal Information Security Engineer (ISSE) - Military veterans preferred

ManTech (


  full-time   employee   contract

United States

Entering ManTech’s 50th year, we hold the distinct honor of being named a “Top 100 Global Technology Company” by Thomson Reuters. We have earned this and many other accolades over the years for our dedication to serving the missions of our nation’s most important customers: U.S. Intelligence, Defense and Federal Civilian agencies. All know us as a trusted partner offering best-in-class solutions in cyber, data collection & analytics, enterprise IT, and systems and software engineering tailored to meet their specific requirements.

Become an integral part of a diverse team in the Mission, Cyber and Intelligence Solutions (MCIS) Group. Currently, ManTech is seeking a motivated, mission Principal ISSE, in the Chantilly, VA area, with strong Customer relationships. At ManTech, you will help protect our national security while working on innovative projects that offer opportunities for advancement.

The IMS Division provides mission solutions to a wide range of Defense and Intelligence Community customers. This division consists of a team of technical leaders that deliver advanced technical solutions to government organizations. Our customers have high standards, are technically adept, and use our products daily to support their mission of protecting national security. Our contributions to our customer’s success is driving our growth.

The Principal Information System Security Engineer (ISSE) ensures that cyber security requirements are effectively integrated into information systems through purposeful security architecting, design, development, and configuration. Must possess excellent analytical skills and be capable of quantifying risk to enterprise systems and level of compliance with security policy. The ISSE employs best practices that can be used to integrate security into all facets of business operations. Requires expert technical knowledge in security engineering and IT systems engineering.

Responsibilities include but not limited to:

  • Defines, plans, designs, and evaluates information security systems and architecture
  • Performs requirements analysis, design, and integration for complex software applications and collaboration infrastructures
  • Conducts certification testing and reporting in accordance with the Risk Management Framework (RMF) and NIST 800-53; identifies deficiencies (POA&M) and provides recommendations for solutions
  • Performs system administration and maintains audit collection and reporting system, vulnerability management program, and continuous monitoring capabilities
  • Participates in the change management process, and assesses security impact of proposed changes
  • Creates and maintains existing information system security documentation, including SSP, SCTM, Security Configuration Guide
  • Writes implementation and design documents describing how security features are implemented

Position Requirements:

  • Requires Bachelor’s degree or equivalent in the fields of mathematics, telecommunications, electrical engineering, computer engineering, or computer science and 7-9 years related experience; or Master’s degree with 5-7 years of experience
  • Experience with modern Windows, UNIX, network operating systems, databases, and virtual computing
  • Strong IT system and application engineering background with experience in Windows 7, Windows Server 2008 R2, Active Directory Group Policy, SQL, networking, VMware vSphere, and auditing
  • Experience with certification testing, Risk Management Framework (RMF), information assurance tools, DoD STIG, and vulnerability assessment
  • CISSP, or DoD 8570.1/8140 certification meeting IAM/IAT Level III required

Security Requirement:

US Citizenship and active TS clearance and SSBI