Senior Linux Administrator

LinQuest is seeking a Senior Linux Administrator to join our team in Colorado Springs, CO. An active TS/SCI clearance is required. 

As a Linux Administrator, you will be responsible for administering, managing, and maintaining the Linux-based systems within our organization. Your primary focus will be on ensuring the stability, security, and performance of our Linux infrastructure, as well as providing support to end-users and other IT teams. This role requires a strong understanding of Linux operating systems, networking, scripting, and troubleshooting skills.

Responsibilities:

• Engineering of systems administration-related solutions for various project and operational needs
• Maintain best practices on managing systems and services across all environments
• Fault finding, analysis and of logging information for reporting of performance exceptions
• Troubleshoot and resolve issues related to server hardware, system and user application software, and networking.
• Collaborate with other IT and user teams to integrate improve overall performance, functionality and capabilities of the systems and applications.
• Proactively monitoring system performance and capacity planning
• Manage, coordinate, and implement software upgrades, patches, hot fixes on servers, workstations, and network hardware
• Create and modify scripts or applications to perform tasks
• Provide input on ways to improve the stability, security, efficiency, and scalability of the environment
• Collaborate with other teams and team members to develop automation strategies and deployment processes
• Monitor system performance and ensure optimal operation of Linux-based systems.
• Implement and maintain security measures to protect Linux servers from unauthorized access and vulnerabilities.
• Perform system updates, patches, and upgrades on a regular basis to ensure system stability and security.
• Utilize package management utilities such as Yum and DNF for package installation, removal, and dependency resolution.
• Develop and maintain scripts to automate routine tasks and improve system efficiency.
• Provide technical support and assistance to end-users and other IT staff.
• Create and maintain documentation for Linux systems, configurations, and procedures.
• Integrate Linux systems with Microsoft Active Directory (AD) for centralized authentication and user management.
• Implement appropriate security configurations, as well as any mitigations and remediations.
• Manage group permissions and access control lists (ACLs) within Linux environments.
• Support of security compliance through design control, configuration/change control documentation, patch testing, verification and remediation releases and decisions. 
• Develop and document systems administration standard operating procedures such as baseline, procedures, and processes to achieve system administration functions. 
• Deploying and maintaining container systems such as Docker and Kubernetes, ensuring efficient application deployment and scalability.

Required Skills and Experience: 

• Bachelor’s degree in Information Technology, Computer Science, or related fields. Equivalent years of experience considered.
• Minimum of 7-10 years of experience in System/network administration or related fields.
• DOD 8570.01M IAT 2 certification CompTIA Security+ or higher IAT cert required.
• Preferred certifications: CompTIA Linux+,  Red Hat Certified System Administrator (RHCSA) (preferred).
• In-depth knowledge of Linux operating systems (e.g., CentOS, Ubuntu, Red Hat), including installation, configuration, and administration.
• Strong understanding of networking concepts and protocols.
• Experience with virtualization technologies.
• Proficiency in shell scripting (Bash, Python, Perl) for automation and system tasks.
• Familiarity with security best practices and tools for securing Linux servers (e.g., firewalls, SELinux, SSH).
• Possess a strong understanding of Linux file system permissions, application integration and how to effectively manage Linux networks.
• Excellent troubleshooting and problem-solving skills.
• Ability to work independently and as part of a team in a fast-paced environment.
• The ability to work in a secure, confined location as needed (i.e., SCIF)
• US citizenship and an active TS/SCI government security clearance.

Compensation: The salary for this position ranges from approximately $110,000 to $125,000 depending on relevant experience and qualifications.

Benefits:

LinQuest offers comprehensive and competitive benefit o