Senior Linux Systems Engineer - OpenShift, Kubernetes & VMware

ISHIR; Killeen (TX); On-site; USD 90,000 - 120,000; Full time

Job summary

ISHIR is seeking a Linux Systems Administrator to join its Systems Support team in Killeen, TX. You will manage Linux servers (RHEL/Ubuntu/CentOS), secure services, and troubleshoot complex infrastructure while supporting Windows environments and VMware, OpenShift, and Kubernetes in a hands-on capacity.

Ideal candidates will have strong problem-solving skills, be security-conscious, and able to collaborate with DevOps, development, and security teams across locations.

Qualifications

• Experience administering Linux servers (RHEL, Ubuntu, CentOS).
• Linux configuration, patching, troubleshooting, and security experience.
• Working knowledge of Windows Server and core services.
• Familiarity with VMware vSphere/ESXi.
• Experience with Apache/Nginx and web server technologies.
• Understanding of server security and common web app vulnerabilities.
• Strong analytical and independent troubleshooting skills.
• Excellent written and verbal communication skills.
• Ability to collaborate with technical and non-technical stakeholders.
• Willingness to participate in an on-call rotation.

Responsibilities

• Administer, monitor, maintain, and troubleshoot Linux servers (RHEL, Ubuntu, CentOS).
• Install, configure, secure, and optimize Linux services (SSH, systemd, Apache/Nginx, cron).
• Perform system upgrades, patching, security hardening, and configuration management.
• Provide Tier 2/3 support for complex infrastructure and enterprise applications.
• Support OpenShift/Kubernetes environments and containerized apps.
• Administer Windows Server environments (AD, DNS, DHCP, GPO, PowerShell).
• Support VMware vSphere/ESXi, including VM deployment and resource management.
• Monitor performance, availability, capacity, and security.
• Collaborate with development, DevOps, and security teams.
• Maintain technical documentation and SOPs.
• Participate in weekly on-call rotation and travel as required.

Skills

Linux system administration

Windows Server administration

On-call support

DevOps collaboration

Strong communication

Education

Bachelor’s degree in Computer Science or related field

Tools

OpenShift

Kubernetes

Docker

Ansible

Terraform

Git

Prometheus/Grafana

ELK/Splunk

Job description

ISHIR is seeking a Linux Systems Administrator to join its Systems Support team in Killeen, TX. You will manage Linux servers (RHEL/Ubuntu/CentOS), secure services, and troubleshoot complex infrastructure while supporting Windows environments and VMware, OpenShift, and Kubernetes in a hands-on capacity.

Ideal candidates will have strong problem-solving skills, be security-conscious, and able to collaborate with DevOps, development, and security teams across locations.