System Administrator

ManTech International, a leader in mission-critical national security solutions, is seeking a Linux System Administrator to join our Information Technology & Technical Support team. In this role, you will install, configure, secure, and maintain Linux-based servers and services supporting federal customers. Responsibilities include user and permissions management, system monitoring, patching, troubleshooting, and backup/recovery. You will collaborate with cyber and infrastructure teams to harden systems and support incident response. ManTech's culture of innovation, integrity, and respect ensures opportunities for growth, including paths into advanced cyber security engineering roles.