Senior - Principal Systems Administrator (TS/SCI with ...

Senior - Principal Systems Administrator (TS/SCI with Poly-Required) Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: Local CACI (Legacy Next Century) is seeking multiple Classified Senior to Principal Systems Administrators to join our team in Annapolis Junction, Maryland. Be part of the movement! Join a large seven-year multiprogram contract serving as the enterprise-wide analyst capabilities contract for an Intelligence Community (IC) customer. These efforts will include developing and sustaining integrated, feature-rich capabilities that promote the modernizing of visualization and presentation tools across the agency space. Joining our team could be a once-in-a-lifetime opportunity to reshape the way our customers perform their mission. To be successful as a, you will need: * Active Top Secret/SCI with a Polygraph-Required * Bachelor''s degree in a technical discipline from an accredited college or university AND ten (10) years experience as a Systems Administrator or five (5) additional year of experience as a Systems Administrator in lieu of degree * Monitor and maintain existing network and system infrastructure consisting of Linux, UNIX, and Windows servers and desktops * Troubleshoot and resolve system and network connectivity issues in development, test, and production environments * Provide Tier 1 and Tier 2 problem identification, diagnosis, and resolutions * Secure infrastructure using AWS/OpenStack security groups, firewall configurations, and SSL/PKI * Experience with Shell, Python, Ruby, Puppet, Ansible, and Git for document support * Maintain accreditation through updating documentation and ensuring all systems are meeting security and policy requirements * Apply required security patches, make regular updates to deployed software, and manage user accounts What We Can Offer You: * We''ve been named a Best Place to Work by the Washington Post. * Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. * We offer competitive benefits and learning and development opportunities. * We are mission-oriented and ever vigilant in aligning our solutions with the nation''s highest priorities. * For over 55 years, the principles of CACI''s unique, character-based culture have been the driving force behind our success. NSIS.BT.OPS NSIS.BTSTENG Company Overview: At CACI, you will have the opportunity to make an immediate impact by providing information solutions and services in support of national security missions and government transformation for Intelligence, Defense, and Federal Civilian customers. CACI is an Equal Opportunity Employer - Females/Minorities/Protected Veterans/Individuals with Disabilities. As a federal contractor, CACI is subject to any federal vaccine mandates or other customer vaccination requirements. All new hires are required to report their vaccination status.

Created: 2025-11-15