Linux Administrator

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