Linux Administrator

Posted 8/18/2026 · last confirmed live 8/26/2026

Closure Technologies is an innovative IT consulting and software engineering company that helps government organizations solve complex technical challenges. The company specializes in custom software development, cloud infrastructure, cybersecurity, systems integration, and data analytics, delivering scalable solutions that improve operational efficiency and drive mission success. With a collaborative and problem-solving culture, Closure Technologies is committed to building high-impact technology solutions that are delivered on time, within budget, and tailored to each client’s unique needs. Clearance Requirement:  TS/SCI with Polygraph Key Responsibilities: Planning, testing, installing, integrating, and maintaining new and upgraded versions of the relevant operating systems Building and hardening Linux servers, and establishing configuration baselines Applying all appropriate security and firmware patches in a timely manner, and assisting in creating, maintaining, and adhering to the organization’s patch management plans Developing test plans and procedures Replacing server hardware components where necessary Testing and integrating software and hardware Managing operating system lifecycles Establishing, developing, testing, staging, and operating environments Designing interfaces to external systems Researching and resolving operating system problems efficiently and accurately, while adhering to organizational standards and practices Troubleshooting operating system problems, and collaborating with other teams (e.g. application development, network, etc.) to resolve problems across the organization Providing technical support to other teams (e.g. application development, etc.) on requirements for integration into the operating system Maintaining and updating documentation on the operating system configuration and all other areas of responsibility Required Qualifications: TS/SCI w/ Polygraph Minimum of 10 years configuring and maintaining Linux servers Bachelor’s Degree in Computer Science, Information Systems, Engineering, or other related discipline, OR 10 years of related technical experience may be substituted for education Strong Linux administration experience Experience working in an organization with complex, intertwined systems and data flows Experience creating, maintaining, and communicating complex information technology documentation Experience with domain account management, particularly via Centrify, LDAP, and Active Directory Experience applying security patches in a Linux environment Strong shell scripting experience Ability to manage a large, complex server environment Experience with the server environment, its hardware components and how/where they are used Understanding how to troubleshoot and replace server hardware if necessary Strong communication and collaboration skills to work effectively and proactively across a large organization of dispersed teams    

This role is published by Closure Technologies on greenhouse. SwiftFit is not the employer and does not accept applications.