Linux System Administrator

Linux System Administrator at ECS Corporate Services Linux System Administrator at ECS Corporate Services in Washington, Washington DC Posted in 1 day ago.

Job Description:

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)

Clearance:

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