Linux System Administrator

Teknita LLC; Downey (CA); Hybrid; USD 110,000 - 150,000; Full time

Job summary

Teknita LLC is seeking an experienced Linux System Administrator to manage enterprise computing across private and public clouds (AWS/Azure/GCP). The role emphasizes Linux administration, security, monitoring, and automation in a high-availability environment.

Ideal candidates have 7+ years of Linux admin experience, 4+ years automating with Ansible, Python, and scripting, plus VMware vCenter/ESXi familiarity. On-site work in CA with on-call rotation is required.

Qualifications

• 7+ years of experience administering RHEL, CentOS, Ubuntu, SUSE, and Debian.
• 4+ years developing automation using Ansible, Shell scripting, and Python.
• Experience with security and threat mitigation tools.
• Experience with VMware, vCenter, and ESXi.

Responsibilities

• Administer and support Linux systems across private and public clouds.
• Maintain system availability for network, storage, compute, and software.
• Develop and maintain technical documentation and procedures.
• Perform patch planning, vulnerability assessments, and patching.
• Monitor, tune, and report on performance; capacity planning.
• Collaborate with System Admins, Developers, Cybersecurity, and Ops.
• Participate in 24×7 on-call rotation.

Skills

Linux admin

Automation

OpenShift

Kubernetes

Scripting

Cloud platforms

On-call experience

Education

Bachelor's degree in IT/Engineering

Tools

Ansible

Python

Shell scripting

VMware vCenter/ESXi

Job description

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

Key Responsibilities

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

Required Skills:

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

Experience Requirements

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

Education:

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