Principal Cyber Support Developer

MANTECH•Chantilly, VA

3d•$141,500 - $236,000•Onsite

About The Position

MANTECH is seeking a motivated, career- and customer-oriented Principal Cyber Support Developer to join our team in Chantilly, VA. In this role, you will play a vital part in leading technical operations, executing cybersecurity engineering solutions, and safeguarding mission-critical enterprise systems.

Requirements

Bachelor’s Degree or 4+ years of additional direct experience in lieu of a degree.
7+ years of experience in systems engineering, cybersecurity operations, or software development.
Proficiency in Linux systems administration and scripting.
Demonstrated experience developing and maintaining Lua (LUA) scripts.
Strong baseline understanding of networking concepts, including TCP/IP, firewalls, and routing protocols.
Active DoD 8570/8140 IAT Level II certification (e.g., Security+ CE, GSEC, SSCP) or the explicit ability to obtain certification within 30 days of hire.
Must possess an active TS/SCI with polygraph.

Nice To Haves

Deep understanding of cybersecurity architectural principles, including defense-in-depth, resilience, and integrated security operations.
Hands-on experience designing, implementing, and managing database schemas.
Demonstrated experience applying schema security-hardening practices, including access controls, input validation, least-privilege permissions, secure configuration, and vulnerability mitigation.
Solid understanding of COTS CDS technologies listed on the NCDSMO Approved Products List (APL).
Proven ability to apply security engineering principles to large-scale enterprise system designs.
Familiarity with cloud computing concepts and virtualized networked environments.
Experience with Information Assurance concepts and processes required to author documentation for Assessment and Authorization (A&A) frameworks.

Responsibilities

Utilize Linux and scripting experience to support and deploy Enterprise Cross Domain Solutions (CDS), enabling secure data transfers across network domains.
Engineer and deploy capabilities to provide new functionality, improve system performance and availability, and generate efficiencies in operational environment maintenance.
Support Assessment and Authorization (A&A) activities related to CDS technologies.
Identify potential conflicts with the implementation of CDS technologies within the enterprise and develop actionable recommendations for remediation.
Contribute to the successful completion of milestones associated with specific projects to meet customer requirements.
Develop and enforce plans to safeguard computer files against unauthorized modification, destruction, or disclosure.
Travel up to 25% annually to CONUS and OCONUS customer locations as required.