Job ID# 10TEK0834-021126 – Posted 02/11/2026 – Downey & City of Industry, CA

We are seeking an experienced Linux System Administrator to support and manage enterprise computing and infrastructure systems across private and public cloud environments (AWS, Azure, GCP).

This role is responsible for administering, securing, monitoring, and optimizing Linux-based systems while ensuring high availability, operational security, and performance across multiple computing and storage platforms. The ideal candidate brings strong troubleshooting skills, automation experience, and deep expertise in enterprise Linux environments.

• Administer and support Red Hat Enterprise Linux (RHEL), Ubuntu, CentOS, SUSE, and Debian environments

• Manage Linux server instances across private and public clouds (AWS, Azure, GCP)

• Maintain system availability for network, storage, compute, and software systems

• Develop and maintain technical documentation, specifications, and operational procedures

• Perform patch planning, vulnerability assessments, patch testing, and quarterly security patch implementation

• Conduct proactive performance monitoring, tuning, reporting, and capacity planning

• Troubleshoot and resolve complex operating system issues in accordance with organizational standards

• Manage data center operations while maintaining strict security compliance

• Implement and enforce the latest security policies and procedures

• Coordinate and execute approved system changes during maintenance windows

• Participate in a 24×7 on-call rotation

• Collaborate closely with System Administrators, Developers, Application Engineers, Cybersecurity professionals, and Operations teams

• • Strong analytical and problem-solving abilities

  • Sound decision-making and organizational awareness

  • Excellent troubleshooting and critical thinking skills

  • Working knowledge of OpenShift and Kubernetes (on-prem and cloud environments)

  • Experience monitoring, tuning, and maintaining Kubernetes clusters

• Minimum 7 years of experience administering RHEL, CentOS, Ubuntu, SUSE, and Debian

• Minimum 4 years of experience developing automation using Ansible, Shell scripting, and Python

• Experience implementing automation for complex operational and administrative processes

• Experience with security and threat mitigation tools (McAfee, Cisco AMP, Nessus/Tenable, Tanium, Dell Secureworks Red Cloak)

• Experience with VMware, vCenter, and ESXi

Bachelor’s degree in Information Technology, Engineering, or related field
(Additional qualifying experience may substitute for education on a year-for-year basis.)