Senior Cyber Security Engineer

General information

Requisition # R64683 Locations USA-VA-Chantilly Posting Date 12/10/2025 Security Clearance Required TS/SCI w/ Poly Remote Type Onsite Time Type Full time

Description & Requirements

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 Senior Cyber Security Engineer to join our team in Chantilly, VA. Senior Cyber Security Engineers are responsible for the quality of cyber security-related solution delivery, development, testing, and deployment in support of cyber security efforts. You will help create secure and efficient cyber solution components based on defined requirements and mission objectives. The successful candidate must possess the ability to work both independently and within a collaborative team environment. Responsibilities include but are not limited to: Maintain operations of identity and access management services including directory, access, identity, and privileged access management services Maintain infrastructure in cloud or virtualized environments Perform Linux-based system upgrades and patches Engineer and deploy a Multi-Factor Authentication (MFA) solution Manage Continuous Monitoring (CONMON) activities Maintain Authority to Operate (ATO) Provide status reports in an Agile environment Periodically provide after-hour support Minimum Qualifications: Bachelor’s degree in an Information Technology field, or 4+ years of additional experience in lieu of a degree 5+ years of cyber experience in support of mission systems Experience working in LINUX environments Proficiency with LDAP directories and database management Ability to create scripts (e.g., Python, Bash) to support automation efforts Understanding of cybersecurity frameworks and best practices Familiarity with cloud security and virtualized infrastructure technologies Ability to troubleshoot system-level issues and conduct root cause analysis Must have or be willing to obtain IAT Level II certification within 6 months of hire (e.g., Security+, GSEC, SSCP) Preferred Qualifications: Experience with Ansible and writing automation playbooks Experience with PKI principles and certificate lifecycle management Hands-on experience with identity federation technologies (e.g., SAML, OAuth) Experience working in Agile and DevOps environments Understanding of Identity and Access Management (IAM) concepts and solutions Experience with system hardening and compliance standards (e.g., STIGs, CIS Benchmarks) Clearance Requirements: Must have a current/active TS/SCI with Polygraph Physical Requirements: The person in this position must be able to remain