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Linux Administrator Jobs

mc lean, va • Posted 6 days ago
Onsite Contract General
At Credence, we support our clients' mission-critical needs, powered by technology. We provide cutting-edge solutions, including AI/ML, enterprise modernization, and advanced intelligence capabilities, to the largest defense and health federal organizations. Through partnership and trust, we increase mission success for war-fighters and secure our nation for a better future.

We are privately held, are repeatedly recognized as a top place to work, and have been on the Inc. 5000 Fastest Growing Private Companies list for the last 12 years. We practice servant leadership and believe that by focusing on the success of our clients, team members, and partners, we all achieve greater success.

Credence has an immediate opening for a Linux Administrator to support the Defense Logistics Agency (DLA) Enterprise Sourcing, Medical and Contingency (ESMC) Portfolio Hosting Support contract. This role will be responsible for administering, maintaining, and securing Linux-based systems supporting enterprise-level logistics and IT services in a mission-critical environment.

Responsibilities include, but are not limited to ...


Collaborate with a large team of Cloud Engineers, Solutions Architects, and Cybersecurity Professionals to manage and modernize workloads in the cloud.

Troubleshoot complex problems and design and implement solutions.

Build automation to eliminate mundane tasks.

Document any developed processes and procedures.


Linux System Administration


Administer, configure, and maintain RHEL server environments

Ensure system availability, performance, and reliability across enterprise infrastructure


System Maintenance & Patching


Perform system patching, updates, and configuration management in accordance with government and enterprise security requirements

Maintain baseline configurations and ensure compliance with security standards (e.g., STIGs)


User & Access Management


Manage Linux user accounts, permissions, and access controls

Support identity and access management processes in secure environments


Troubleshooting & Operational Support


Diagnose and resolve system, application, and access-related issues in a timely manner

Provide Tier II/III technical support for Linux environments


Cybersecurity & Compliance


Implement and maintain cybersecurity controls aligned with federal standards and RMF requirements

Support vulnerability scanning, patch remediation, and continuous monitoring activities


Virtualization & Infrastructure Support


Support virtualized Linux environments and enterprise platforms (e.g., VMware, cloud-based infrastructure)

Assist with provisioning, deployment, and sustainment of systems


Configuration Management & Documentation


Participate in change management processes and maintain accurate system documentation

Ensure all changes are tracked and compliant with Government-directed processes


Requirements


US citizenship with the ability to obtain a public trust

Bachelor's degree in Information Technology, Computer Science, or related field (or equivalent experience)

5+ years of experience in Linux system administration in enterprise or government environments

Current CompTIA Security+ Certification or ability to obtain it in the first 60 days

Current AWS Certification or ability to obtain it in the first 90 days

Ability to work and produce results in an agile and fast-paced environment with dynamic deadlines

Experience with automation/scripting (e.g., Bash, Python, Ansible)

Experience with:

Linux OS (RHEL, CentOS, Ubuntu)

System patching, configuration management, and troubleshooting

User account and access management

Virtualization platforms and/or cloud infrastructure

Networking fundamentals and system performance tuning

Familiarity with cybersecurity best practices, including:

STIG implementation and vulnerability remediation


Preferred Qualifications


Experience supporting DLA, DoD, or federal enterprise IT environments

Strong AWS skills

Proficiency with Infrastructure as Code (Terraform, Cloud Formation)

Proficiency with containerization in the cloud (EKS, ECS, Fargate)

Familiarity with RMF (Risk Management Framework) processes

Experience supporting enterprise service management or logistics systems

Relevant certifications (e.g., Security+, RHCSA/RHCE, AWS, etc.)
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