Red Hat Linux Administrator

Job Title: Red Hat Linux Administrator

Location: Woodlawn, MD
Duration: 6+ Months Contract

Duties & Responsibilities:

·        Administer, harden, and optimize Red Hat Enterprise Linux (RHEL 7/8/9+) systems for DIS operational environments.

·        Build and maintain Ansible/Tower/AAP automation for OS configuration, patching, deployments, network/storage tasks, and cloud infrastructure provisioning.

·        Operate and support DIS Internet Messaging platforms (Sendmail/Postfix, SMTP Auth, LDAP sync), including YAML/Ansible-based server provisioning and Splunk log/report automation.

·        Manage UNIX/BIND DNS zones, automate zone maintenance, integrate with AD DNS, and ensure compliance with SSA security and change-management processes.

·        Support and operate OpenShift, Kubernetes, and Amazon EKS clusters, including deployment of OCI-compliant base images, namespace administration, and containerized application support.

·        Provide multi-cloud ACI operations across AWS, Azure, and Google Cloud Platform—compute, storage, networking, AMIs, IAM, encryption, monitoring, and DR/failover design.

·        Implement and support security operations including ATO documentation, POA&M tracking, continuous monitoring, vulnerability scanning, intrusion detection, event logging, and incident response.

·        Maintain Red Hat Satellite for patching, inventory, and configuration compliance.

·        Support virtualization infrastructure including VMware ESXi, vCenter, Horizon/VCF/Aria, Dell/EMC platforms, SAN administration, and backup/restore technologies.

·        Produce and maintain engineering documentation, runbooks, system architecture references, and CAPRS/ServiceNow problem and change records.

·        Participate in 24x7 on-call rotations, respond to incidents within required SLAs, and support weekend/off-hour maintenance windows.

Required qualifications to be successful in this role:

·        7+ years administering RHEL 7/8/9+ including installation, configuration, optimization, security hardening, and backup/recovery.

·        7+ years troubleshooting performance issues (CPU, memory, I/O, networking).

·        5+ years supporting virtualized environments (VMware ESXi/vCenter/VCF/Aria, KVM).

·        5+ years developing automation using Ansible, Ansible Tower/AAP, Bash, Python, or Perl.

·        Expertise in Linux command-line operations and enterprise-level troubleshooting.

·        Strong communication and documentation skills.

·        5 years of experience working Virtual Platforms

·        5 years of experience working with Ansible Playbooks

·        3 years of experience with scripting languages for automation tasks and deployments (e.g., Bash Shell and Python)

·        Expertise in the Linux command-line environment 

·        Excellent interpersonal and communication skills

·        Deep experience with RHEL tools including Ansible, Satellite, CoreOS, OCI image creation, and automation pipelines.

·        Hands-on experience supporting Kubernetes/OpenShift/EKS clusters.

·        Advanced experience supporting AWS/Azure/Google Cloud Platform including computer, networking, IAM, encryption, DR/failover.

·        Experience managing Internet Messaging (Send mail/Postfix, LDAP, SMTP Auth), Splunk, and YAML/Ansible provisioning.

·        Experience supporting UNIX/BIND DNS in multi-platform environments.

·        Strong knowledge of federal security requirements including ATO, POA&M, continuous monitoring, vuln scanning, IDS/IPS, and CAPRS/ServiceNow workflows.

·        Experience automating cloud, server, network, and storage operations at enterprise scale.

Thanks & Regards
Rocky Thomas | M9 Consulting, Inc
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