Linux Administrator

About the role

We are seeking an experienced Linux Systems Administrator to support a large-scale infrastructure modernization initiative involving the migration of legacy business applications from a traditional mainframe environment to a modern Linux-based cloud platform. This role is focused on systems administration and platform support, ensuring the stability, performance, and ongoing maintenance of critical enterprise applications running on Linux infrastructure.

Responsibilities

• Administer and maintain enterprise Linux environments, including Red Hat Enterprise Linux (RHEL) and SUSE Linux.
• Perform system patching, upgrades, software installations, deployments, and performance tuning.
• Support Rocket Enterprise Server environments hosting COBOL applications on Linux platforms.
• Provide infrastructure support for legacy application modernization and cloud migration initiatives.
• Monitor system health, troubleshoot production issues, and implement corrective actions.
• Document system configurations, operational procedures, and support processes.
• Collaborate with infrastructure, development, cloud, and application teams to ensure platform stability.
• Participate in knowledge transfer sessions and contribute to operational readiness efforts.
• Occasionally provide support for critical incidents and scheduled maintenance activities.

Requirements

• 5+ years of Linux systems administration experience.
• Strong experience administering Red Hat and/or SUSE Linux environments.
• Hands-on experience with Rocket Enterprise Server (formerly Micro Focus Enterprise Server).
• Familiarity supporting Rocket Enterprise Developer environments.
• Experience deploying and maintaining Linux workloads in AWS.
• Strong command-line administration and troubleshooting skills.
• Experience performing system upgrades, patch management, and application deployments.
• Excellent problem-solving, organizational, and documentation skills.
• Strong verbal and written communication abilities.
• Ability to work independently with minimal supervision.

Preferred Qualifications

• Experience supporting COBOL-based application environments.
• Knowledge of mainframe modernization or migration initiatives.
• Familiarity with DB2, Teradata, or related database integrations.
• Understanding of JCL, control cards, and legacy processing frameworks.
• Experience supporting data warehousing, reporting, or enterprise product development environments.
• Experience in cloud transformation or lift-and-shift migration projects.