Senior Linux Administrator

Overview

i3 is searching for a Senior Linux Administrator to support the Missile Defense Agency Information Management and Software Services (AIMSS) effort. The mission is to design and implement a Missile Defense System with multiple layers of protection. The Senior Linux Administrator performs administration of cloud and on-site Linux technologies and provides end-to-end solutions for IT Systems. Creates and configures virtual and physical machines in a multi-platform environment. Monitors system performance and addresses any issues through an effective support process. This position is located at Redstone Arsenal in Huntsville, AL.

Responsibilities

• Build, configure, and maintain standardized Linux Operating Systems (such as RHEL 9) in various technical use cases.
• Build and maintain virtual machine Linux golden images from source code management.
• Integrate Linux operating systems with Active Directory environments utilizing tools such as SSSD.
• Maintain software repository mirrors utilizing Red Hat Satellite servers and custom scripts.
• Integrate multifactor authentication, CAC/smartcard PKI and certificate management in a mixed Windows/Linux environment.
• Work with teammates on an agile project with a focus on providing a secure, versatile, efficient, reproduceable, and highly scalable computing environment.
• Responsible for the installation, maintenance, configuration, and integrity of computer software and implementing operating system enhancements that will improve the reliability and performance of the applications and systems.
• Perform Linux system configuration, patching, and vulnerability remediation utilizing Ansible, Terraform, Chef, GitLab, or other automation tools.
• Coordinate hardware and software upgrades and installations with network and security teams.
• Apply security controls as defined in DISA’s Security Technical implementation Guides (STIGs). Ensure compliance with established MDA cybersecurity compliance standards for Linux and VM computing systems.
• Implement and ensure operations for DOD security controls such as Security Technical Implementation Guidelines (STIG) and Host Based Security Systems (HBSS).
• Maintains the integrity and security of servers and systems applicable to the compliance of RMF accreditation packages.
• Monitor, evaluate, and maintain systems and procedures to safeguard information systems, networks and databases.
• Have a customer centric approach and provide all level of support for the technical and cyber team as well as the user base community. 
• Provides advice and training to end-users and provides mentorship to junior team members.
• Work with software developers in ensuring their applications operate correctly within a Linux environment.
• Ensure software application data is monitored, managed and stored within an on-prem and hybrid cloud environment.

Qualifications

Education/Experience

• Bachelor’s degree in Computer Information Systems, Information Technology, Computer Science, or a related technical field. Additional experience may substitute for degree.
• Minimum 12+ years of relevant IT experience required.
• Senior knowledge and experience of Linux operating systems (RHEL).
• Experience with different database systems (PostgreSQL and MySQL).
• Experience with container solutions (Podman).
• Experience with Ansible playbooks.
• Working knowledge of current systems and applications.
• Ability to troubleshoot and resolve software and hardware conflicts.
• Be able to quickly adapt to new situations, have a strong commitment to a team environment, maintain a capacity to work with little supervision, and the willingness to learn new technologies.
• Must hold an approved DoD 8140 certification - CompTIA Security+ CE.
• Must have an RHCSA certification, RHCE preferred.
• Active Secret clearance required. Must be able to maintain the security clearance required for this position.
• Must reside within a 75-mile radius of Redstone Arsenal in Huntsville AL or be willing to relocate prior to start date.
• Ability to reliably commute to the office as business needs dictate.
• U.S. Citizenship

 

Knowledge/Skills

• Knowledge of office administration and procedures.
• Exceptional judgment capabilities and relationship management skills.
• Excellent communication, teamwork, and client service skills; ability to clearly communicate in discussions and written documents, and to deliver feedback clearly and tactfully.
• Interact with a diverse array of customers and staff in a professional and courteous manner.
• Work independently with accountability for accurate and complete results.
• Be extremely organized and e