Linux System Administrator

ECS Tech Inc

About The Position

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.

Requirements

Bachelor's degree in IT, Computer Science, or related field (or equivalent experience)
5+ years of Linux system administration (RHEL/CentOS preferred)
2+ years hands-on experience with AWS (preferably GovCloud)
CompTIA Security+ CE (required)
Must be a U.S. Citizen
Active DoD [Secret] security clearance
Knowledge of DISA STIGs and SCAP compliance scanning
Knowledge of RMF / ATO processes
Knowledge of AWS IAM, VPC, EC2, S3, CloudFormation, and CloudWatch
Knowledge of TCP/IP networking, DNS, DHCP, NFS, SSH, LDAP
Knowledge of configuration management tools (Ansible, Puppet, or Chef)
Knowledge of HBSS/ESS, ACAS, and Splunk

Nice To Haves

Red Hat Certified System Administrator (RHCSA) or RHCE (desired)
Linux+ (acceptable)
Experience in cloud formation and terraform
Experience with RAISE 2.0 (Zero Trust) and the ATO Process

Responsibilities

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