Network Systems Administrator

ManTech International seeks a Network Systems Administrator to support mission-critical federal programs. In this role, you will configure, secure, and maintain enterprise networks, servers, and related infrastructure across classified and unclassified environments. Responsibilities include monitoring performance, troubleshooting outages, implementing patches and upgrades, and enforcing security controls aligned with federal standards. You will collaborate with cyber, systems engineering, and mission teams to ensure high availability, reliability, and compliance. ManTech offers robust training, certifications support, and clear paths for advancement in a mission-focused, collaborative culture.