Senior Systems Administrator

Your essential job functions will include but may not be limited to: Install, configure, and maintain operating systems, hardware, virtual environments, and network devices to meet program needs Perform system hardening to ensure compliance with established security policies Troubleshoot and resolve hardware and software issues Manage user accounts, permissions, and access controls Implement and maintain system backups and disaster recovery procedures Monitor system performance and identify areas for improvement Collaborate with other IT staff to ensure system stability and availability Provide technical support to end-users Maintain accurate documentation of system configurations and procedures Install and maintain DevSecOps tools (GitLab, Artifactory, etc.) Install and maintain Atlassian suite of tools (Jira, Confluence, Mattermost) Install and maintain ACAS suite of tools (Nessus, Tenable SC, etc.) Working knowledge of compliance frameworks such as RMF, DISA STIGs, and NIST 800-53 6+ years of experience administering Linux systems (e.g., Red Hat, CentOS, Ubuntu) Experience with system standup and configuration including group policy Excellent troubleshooting and problem-solving abilities Stay current with emerging technologies and best practices in systems administration Previous work supporting test or research and development environments Coordinate with program stakeholders, engineers, and other IT professionals to align system capabilities with mission objectives Provide technical expertise and recommendations for system improvements and upgrades Must have in-depth knowledge of DoD, National and applicable service and agency security policy, manuals and standards. Must have the ability to work in a dynamic environment and effectively interact with numerous DOD, military/civilian personnel and industry partners Master's degree in an IT-related field Bachelor's degree and relevant professional experience can be accepted in lieu of a master's degree Experience as a Data Transfer Agent (DTA) Experience with configuration management, automation tools, and scripting languages (e.g., Ansible, Bash, Python, Puppet, Chef) Experience with Containerization and Orchestration tools (e.g., Kubernetes, K8S, K3S) Certifications: ISC2 CCSP; CompTIA SecurityX (CASP+), AWS Certified DevOps Engineer - Professional, Azure DevOps Engineer Expert, or CKA (Certified Kubernetes Administrator) Must possess an active DoD Top Secret (TS) security clearance (with SCI and SAP eligibility). LI-MM1 ONSITE