Jobs at MANTECH

ManTech seeks a Network Engineer III to support the Navy Enterprise Tactical Training Network (NETTN) at NSWC Corona in San Diego. The role involves designing enterprise IT system architectures covering software, hardware, and communications; ensuring compliance with open systems standards (OSI, ISO, IEEE OSE, TAFIM); and managing the full lifecycle of application systems from analysis through coding, testing, and documentation.…See more The position requires 9 years of IT experience, a Bachelor's degree, and full technical knowledge across systems analysis and programming phases.

Seeking an experienced Systems Administrator to maintain critical defense enterprise infrastructure in San Diego, including Windows servers, domain controllers, cloud resources, and VMware environments. The role requires dual network and systems administration responsibilities, including TACLANE cryptographic encryptor configuration, troubleshooting site outages, vulnerability remediation (ACAS/Nessus), system hardening, and user account management.…See more Requires 4+ years designing and deploying enterprise Windows infrastructure (AD, DHCP, DNS, GPO, WSUS) and 2+ years in a Network or Systems Administrator role, plus DoD 8570 IAT Level II compliance (Security+ or equivalent).

ManTech seeks a Systems Administrator to maintain critical enterprise infrastructure for national security operations in San Diego, supporting the 0100–0900 morning shift. The role requires administering Windows servers, domain controllers, cloud resources, and VMware environments; configuring and troubleshooting KG-175 (TACLANE) cryptographic network encryptors; performing vulnerability remediation with ACAS/Nessus; and executing rapid incident response and site outage troubleshooting.…See more Candidates must have 4+ years of enterprise Windows infrastructure experience (AD, DHCP, DNS, GPO, WSUS), hands-on TACLANE configuration expertise, and DoD 8570 IAT Level II compliance (Security+ CE or equivalent). The position includes up to 25% travel (CONUS/OCONUS) and requires an active Top Secret clearance with SCI eligibility.

ManTech seeks an Information System Security Officer to maintain Assessment & Authorization (A&A) documentation per NIST and DoD standards, track compliance deficiencies via Plans of Action and Milestones, implement continuous monitoring strategies, and oversee audit log systems and patch management. The role requires managing security tools, evaluating system configuration changes, and supporting an Information System Security Manager (ISSM) with compliance and incident response procedures.…See more Candidates must hold Security+ certification, have 2+ years of RMF and NIST SP 800-53 experience, and possess an active Top Secret clearance with SCI eligibility.

The ISSO will manage information system security operations for classified computing environments, including developing security documentation, applying security controls aligned with NIST and DoD standards, conducting vulnerability assessments with tools like Nessus, and supporting Risk Management Framework implementation and System Security Plans. The role requires expertise in compliance frameworks (NIST SP 800-53, NIST SP 800-171, CNSSI 1253, DoDM-5220-22), Information Assurance controls, and Intelligence Community Directive 503 requirements.…See more The person will perform alternative ISSM duties and assist with Assessment & Authorization artifacts for classified systems.

ManTech seeks a Systems Administrator to support national security infrastructure in San Diego, maintaining Windows servers, domain controllers, cloud resources, and VMware environments. The role combines network and systems administration, including configuring cryptographic network encryptors (TACLANE), troubleshooting site outages, performing vulnerability remediation with ACAS/Nessus, and managing user accounts.…See more Requires a Bachelor's degree with 4+ years of IT experience (or equivalent), DoD 8570 IAT Level II compliance, and 2+ years as a Network or Systems Administrator with enterprise Windows infrastructure expertise. Travel up to 25% and an active Top Secret/SCI clearance with polygraph eligibility are required.

ManTech seeks a Systems Administrator to maintain critical national security enterprise infrastructure in San Diego, working a 0100–0900 morning shift with on-call support. Responsibilities include administering Windows servers, domain controllers, cloud resources, and VMware environments; configuring and troubleshooting TACLANE cryptographic network encryptors; performing patch management, vulnerability remediation (ACAS/Nessus), and system hardening; and managing user accounts and ticketing incidents.…See more Requires a bachelor's degree with 4+ years of IT experience (or equivalent substitution), DoD 8570 IAT Level II compliance (Security+ CE or equivalent), 4+ years of enterprise Windows infrastructure design/deployment, and hands-on TACLANE encryptor experience. Up to 25% travel (CONUS and OCONUS) is required.