Systems Administrator

We are seeking a highly skilled and experienced Systems Administrator with expertise in Linux, specifically Red Hat Enterprise Linux, to support a mission-critical federal program. The successful candidate will have in-depth knowledge of Linux system administration, scripting, automation, and networking. This role involves designing, implementing, maintaining, and optimizing Linux environments to ensure reliable and secure operations., * Design, deploy, troubleshoot, and maintain Red Hat Enterprise Linux Server environments (version 8 and 9).

• Develop and maintain advanced automation scripts utilizing BASH, Perl, JavaScript, or Python.
• Perform administration and operational tasks from the command line interface.
• Automate tasks and manage configurations using tools such as Ansible and RHEL Satellite.
• Manage package deployment and updates across multiple geographically dispersed environments.
• Configure and administer network services including NFTables, Firewalld, IPTables, ISC2 BIND DNS, TCP/IP, IPv4/IPv6, and Postfix/SMTP relay.
• Oversee Linux server clustering, NFS filesystems (NFSv3 and NFSv4), PXE boot environments, and SELinux configurations.
• Support container runtime environments (formerly Docker), cloud platforms, and code management systems like GitLab.
• Maintain comprehensive documentation of system architecture, configurations, and processes.
• Collaborate with cross-functional teams to support infrastructure projects.
• Provide mentorship to junior team members.
• Troubleshoot and resolve LAN/WAN connectivity and performance issues.
• Ensure systems adhere to security hardening standards such as CIS, NIST SP 800-53 Revision 5, and DISA STIGs.

• Bachelor’s degree in computer science, Information Systems, Cybersecurity, or a related field, or an equivalent combination of education and experience.
• Over 10 years of experience in Linux/UNIX system administration with interoperability experience with Windows.
• Current certification in Red Hat Enterprise Linux (e.g., RHCSA, RHCE, or RHCA).
• Proficiency in scripting languages including BASH, Perl, JavaScript, or Python.
• Hands-on experience with automation tools such as Ansible and RHEL Satellite.
• Familiarity with container runtimes (formerly Docker), cloud services like AWS, and code repositories such as GitLab.
• Strong problem-solving, communication, and documentation skills.
• Ability to work independently and within a team environment.
• Availability to participate in a 24/7/365 on-call rotation.

Why This Opportunity May Be Appealing

This role offers the chance to work on a mission-critical project within a dynamic government-focused environment, employing advanced Linux system management and automation techniques. Candidates will have the opportunity to contribute to critical infrastructure, collaborate with multidisciplinary teams, and refine their skills in a challenging, impactful setting.

Dexian stands at the forefront of Talent + Technology solutions with a presence spanning more than 70 locations worldwide and a team exceeding 10,000 professionals. As one of the largest technology and professional staffing companies and one of the largest minority-owned staffing companies in the United States, Dexian combines over 30 years of industry expertise with cutting-edge technologies to deliver comprehensive global services and support.