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Provides hands-on system administration for test, integration, and production environments supporting the Intelligence Community. Maintains RHEL, Windows, Oracle, virtual, network, and monitoring systems; troubleshoots switches, routers, hardware, and applications; applies patches, manages backups, monitors security and performance, optimizes resources, and performs capacity planning. Develops procedures and automation, prepares technical documentation, trains junior staff, responds to incidents, and supports configuration, upgrades, and system operations.

Performs enterprise network operations and engineering support for USMC and Navy-Marine Corps networks. Designs, installs, configures, troubleshoots, and manages Cisco networking solutions; monitors performance; coordinates infrastructure repairs; reviews root cause analyses; supports DevSecOps technology implementation; and assists cybersecurity teams with defense-in-depth practices and intrusion artifact collection.

Installs, configures, administers, troubleshoots, and maintains networked systems, hardware, software, and infrastructure. Manages accounts, documentation, patches, system performance, diagnostics, virtualization, and software testing. Develops system requirements and technical solutions, evaluates new technologies, and collaborates with development and Information Assurance teams to maintain DISA compliance. The role supports multiple critical projects at a customer-site lab and provides guidance to junior personnel.

Designs, installs, tests, and supports enterprise LAN/WAN network capabilities in a complex national security program. Maintains network documentation, rack elevations, installation instructions, and as-built designs. Troubleshoots routers, switches, and firewalls; manages vulnerability alerts and security scanning; supports incident resolution and evolving network architecture. The role also coordinates with IT service providers, responds to operational issues on call, and contributes to agile DevOps-based system engineering, integration, testing, and operations.

Administer and secure Oracle and other relational and NoSQL databases in a complex operational environment. Implement DISA STIGs, conduct vulnerability scans, remediate findings, support RMF and ATO processes, manage POA&M items, apply patches, and validate compliance with ISSOs. Troubleshoot database issues, perform recovery actions, maintain and develop scripts, execute SQL queries, and assess security impacts of system changes. The role requires extensive Oracle administration and database security experience in a DoD environment.

Leads proactive threat hunting, high-severity incident response, host and network analysis, detection engineering, and vulnerability mitigation across cloud, SaaS, and on-premises environments. Develops threat-hunting hypotheses, custom signatures, detection rules, correlation logic, and AI-assisted detections. Produces executive-ready reports, briefs senior government leaders, delivers cybersecurity training, mentors personnel, and integrates threat intelligence into defensive cyber operations.

Provides system administration for complex, geographically distributed and air-gapped environments. Responsibilities include installing and maintaining applications, configuring servers and desktops, managing Active Directory, patching, vulnerability assessments, certificate renewals, virtualization, backups, troubleshooting, security management, performance optimization, and technical documentation. The role supports end users and technical teams, resolves operational issues, coordinates outages and upgrades, and maintains server, storage, and network infrastructure.

Develop and maintain FAA Terminal Flight Data Manager software that improves aircraft runway and terminal congestion. Responsibilities include C++ and Java development in UNIX/Linux environments, user interface framework design, system engineering support, version control, documented software processes, and Agile Scrum collaboration. The role supports air traffic control display software and requires eligibility for Public Trust clearance and FAA Suitability.

Lead development and maintenance of FAA air traffic control display software for the TFDM program. Responsibilities include C++ and Java development on UNIX/Linux, object-oriented design, user interface framework development, system engineering support, version control, documented software processes, and Agile Scrum collaboration. The role supports software improving airport surface and terminal airspace traffic management and requires obtaining and maintaining a Public Trust clearance.

Administer and secure RHEL/Linux infrastructure across development, test, and production environments. Responsibilities include system configuration, lifecycle management, patching, monitoring, troubleshooting, root-cause analysis, vulnerability remediation, security hardening, automation with Ansible, Bash, and Python, documentation, change control, and on-call support. The role collaborates with engineering and operations teams to maintain mission-critical systems in a secure national-security environment.