Information Systems Security Engineer

Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting‑edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary.

Your journey starts now—protect and innovate with MANTECH!

MANTECH seeks a motivated, career and customer‑oriented Information Systems Security Engineer (ISSE) to join our team onsite in Norfolk, Virginia supporting the Navy Continuous Training Environment (NCTE) Program. This position is onsite.

Perform, support, or review security assessments to identify vulnerabilities or non‑compliance and recommend activities to mitigate or eliminate identified threats.

Validate, and verify complex system‑wide security requirements based on analysis of user, policy, regulatory, and resource demands.

Design, develop, and deploy security system architectures to meet evolving customer needs.

Design, develop, implement and/or integrate security components including for networking, computing, and multi‑enclave environments.

Assist in the development and implementation of security functionality in varied products and services across the enterprise environment.

Review, provide feedback, and help update and maintain project and program documentation which contain IS stipulations, such as system security plans (SSP), certification and accreditation (C&A) packages, and other system design artifacts.

Enforce compliance with security authorization activities in accordance with Government standards and the RMF.

Bachelor’s degree in Computer Science or other related technical field and 5+ years of relevant information systems experience, or an Associates degree and 8+ years of relevant information systems experience, or a High School Diploma and eleven 11+ years of information systems relevant experience in lieu of Bachelors degree.

Experience identifying and analyzing systems requirements.

Experience developing and maintaining system applications and security.

Experience providing user support and guidance.

Experience recommending and implementing security upgrades, security patches, and new applications vulnerabilities for installed equipment.

Experience ensuring proper documentation, coordination, and maintenance of multiple systems.

Experience of DIACAP and RMF are required as well as ACAS experience and DISA ACAS certification.

Experience with eMass.

Computing Environment/Operating System (CE/OS) certifications (Preferably VMware, Linux and/or Microsoft Windows 2022).

Relevant work experience as an ISSE within a U.S. Government environment, DoD strongly preferred.

Active SEC+ CE certification.

Master’s degree in computer science or related technical field.

Active Top Secret/Sensitive Compartmented Information (TS/SCI) security clearance.

US citizenship required and active Secret security clearance.

Must be able to remain in a stationary position 50% of the time.

Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer.

The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

The projected compensation range for this position is $89,100.00-$. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (for Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation.

MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short‑term and long‑term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation. If you need a reasonable accommodation to apply for a position with MANTECH, please email us at  and provide your name and contact information.