Information System Security Engineer at ManTech in USA-VA-Quantico, USA-AL-Huntsville
- Company: ManTech
- Location: USA-VA-Quantico, USA-AL-Huntsville
- Posted: Sep 18, 2026
- Type: Full-time
- Experience: 14+ years
Overview
Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transfo…
Job description
- Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!
- MANTECH seeks a motivated, career and customer-oriented Information System Security Engineer (ISSE) to join our team in Washington, D.C., Chantilly, VA, Quantico, VA, or Huntsville, AL.
Responsibilities
- Identify information protection needs for an IS and Network Environment. Define IS and Network Environment security requirements in accordance with applicable cybersecurity requirements
- Design security architectures for use within the IS and Network Environment. Design and develop cybersecurity-enabled products for use within an IS and Network Environment
- Integrate and/or implement security with Cross Domain Solutions (CDS) for use within an IS and Network Environment
- Develop and implement security designs for new or existing network system(s). Ensure that the design of hardware, operating systems, and software applications adequately address cybersecurity requirements for the IS and Network Environment
- Design, develop, and implement network security measures that provide confidentiality, integrity, availability, authentication, and non-repudiation. Design, develop, and implement specific cybersecurity countermeasures for the IS and Network Environment
- Develop interface specifications for the IS and Network Environment. Develop approaches to mitigate IS and Network Environment vulnerabilities and recommend changes to network or network system components as needed
- Ensure that network system(s) designs support the incorporation of FBI directed cybersecurity vulnerability solutions
Requirements
- Must meet one of the following levels of experience: A high school diploma/GED and 14 years’ experience, an Associate’s degree and 7 years’ experience, a Bachelors degree and five years’ experience, or a Master’s and 3 years’ experience.
- Hold at least one of the following certifications: Certified Information Systems Security Professional (CISSP) (or Associate), CompTIA Advanced Security Practitioner (CASP) CE, Certified Secure Software Lifecycle Professional (CSSLP), CISSP- Information System Security Engineering Professional (ISSEP), or CISSP- Information System Security Architecture Professional (ISSAP).
- Familiarity with the use and operation of security tools including: Tenable Nessus and/or Security Center, IBM Guardium, HP WeblInspect, Network Mapper (NMAP), and/or similar applications.
- Working knowledge of the National Institute of Standards and Technology (NIST) Risk Management Framework (RMF) and ATO processes.
- Must have a current/active Top Secret security clearance with eligibility to obtain SCI prior to starting this position.
- Selected candidate must be willing to undergo a Polygraph.
- Degree in Computer Science, Cybersecurity, or other cyber discipline.
Skills
Required
- Information System Security Engineering
- Security architecture design
- Cross Domain Solutions (CDS)
- Network security
- Cybersecurity countermeasures
- NIST Risk Management Framework (RMF)
- ATO processes