Linux Administrator

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.

• 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, ensuring 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 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.

• 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).
• Experience with system patching, configuration management, and troubleshooting.
• Experience with user account and access management.
• Experience with virtualization platforms and/or cloud infrastructure.
• Experience with networking fundamentals and system performance tuning.
• Familiarity with cybersecurity best practices, including STIG implementation and vulnerability remediation.

• 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.).