Linux System Administrator

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

Required Skills 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:

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 Desired Skills Prior experience supporting

USMC/M&RA

systems or programs Familiarity with MCCOG onboarding and operational processes Experience with containerization (Docker, Kubernetes, OpenShift) Experience with CI/CD pipelines and DevSecOps practices Knowledge of DISA Cloud Access Point (CAP) and BCAP connectivity ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, or local jurisdiction law. Everforth ECS is the federal segment of Everforth , a $4B global organization with over 10,000 employees. Our nearly 3,500 professionals deliver advanced technology solutions in data and AI, cybersecurity, and enterprise transformation, serving defense, intelligence, and federal civilian agencies. Our work powers mission-critical outcomes, strengthens technology partnerships, and creates meaningful opportunities for our people. We are defined by a commitment to excellence in delivery, a culture of innovation, and an environment where talent can thrive and grow.

We value:

Attracting and developing top talent and high-performing teams Fostering a culture that is engaging, accountable, and mission-driven Meet the challenge. Make a difference with Everforth ECS!