Linux System Administrator

Everforth ECS is seeking a Linux System Administrator to provide temporary support to the Manpower & Reserve Affairs (M&RA) Customer. The selected candidate will be responsible for the administration, maintenance, and security of Linux-based systems hosted within the AWS GovCloud and MCCOG environments.

Responsibilities

• U.S. Navy and DoD cybersecurity discussions, RPOC specifically means a Rapid Assess and Incorporate Software Engineering (RAISE) Platform of Choice (RPOC)

System Administration: Install, configure, maintain, and troubleshoot RHEL/CentOS-based Linux servers within AWS GovCloud and MCCOG infrastructure * Cloud Operations: Manage EC2 instances, S3, IAM roles/policies, VPCs, security groups, and other AWS services within the GovCloud boundary * MCCOG Coordination: Interface with MCCOG teams for provisioning, accreditation, and operational support of cloud-hosted systems * Security & Compliance: Implement and maintain STIG hardening, ACAS/Nessus vulnerability scanning, and ensure compliance with DISA and Marine Corps cybersecurity policies (RMF/ATO) * Patching & Updates: Execute scheduled and emergency patching of Linux systems in accordance with IAVM requirements * Monitoring & Performance: Configure and maintain system monitoring tools (e.g., CloudWatch, Nagios, Splunk, or HBSS/ESS) to ensure availability and performance SLAs * Automation & Scripting: Develop Bash, Python, or Ansible scripts/playbooks to automate routine administrative tasks * Backup & Recovery: Manage backup solutions and disaster recovery procedures for Linux systems * Documentation: Maintain system documentation including SOPs, network diagrams, and change management records in accordance with contract requirements * Incident Response: Troubleshoot and resolve system outages and security incidents; participate in after-hours support as needed * Collaboration: Work with application teams, database administrators, network engineers, and the M&RA program office to support mission requirements

Education: Bachelor's degree in IT, Computer Science, or related field (or equivalent experience) * Experience: 5+ years of Linux system administration (RHEL/CentOS preferred) * Cloud Experience: 2+ years hands-on experience with AWS (preferably GovCloud) * Certifications (IAT Level II minimum per DoD 8570/8140):

• CompTIA Security+ CE (required)
• Red Hat Certified System Administrator (RHCSA) or RHCE (desired)
• Linux+ (acceptable), * Must be a U.S. Citizen
• Active DoD [Secret] security clearance

Knowledge of:

• DISA STIGs and SCAP compliance scanning
• RMF / ATO processes
• Experience in cloud formation and terraform
• Experience with RAISE 2.0 (Zero Trust) and the ATO Process
• AWS IAM, VPC, EC2, S3, CloudFormation, and CloudWatch
• TCP/IP networking, DNS, DHCP, NFS, SSH, LDAP
• Configuration management tools (Ansible, Puppet, or Chef)
• HBSS/ESS, ACAS, and Splunk