Lead System Admin - Linux Server

Don Nelson Recruitment Limited; Hong Kong; On-site; HKD 420,000 - 650,000; Full time

Job summary

Don Nelson Technology Limited in Hong Kong seeks an experienced Linux Administrator with strong DevOps expertise to support enterprise Linux infrastructure, container platforms, and cloud environments. Focus on high availability, security, and scalability across physical, virtual, and cloud environments.

Responsibilities include administering Linux environments, managing Kubernetes/OpenShift/Tanzu, and developing automation with Ansible.

Qualifications

• 8–10 years of Linux system administration and cloud infra experience.
• Strong Red Hat Enterprise Linux expertise in physical and virtual environments.
• Hands-on with Kubernetes, OpenShift, Tanzu or similar orchestration platforms.
• Experience deploying and managing physical/virtual servers.
• Proficient in AWS and Azure cloud platforms.
• Automation skills using Ansible or equivalent tools.
• Shell, Python or Perl scripting proficiency.
• Excellent troubleshooting and communication in English and Chinese.

Responsibilities

• Administer and support enterprise Linux environments for 24x7 availability.
• Manage container platforms including Kubernetes, OpenShift, and Tanzu.
• Provide L1–L3 infrastructure support for incidents.
• Perform server installations, upgrades, patching and hardening.
• Develop automation scripts to improve efficiency.
• Implement infrastructure automation with Ansible.
• Monitor performance and capacity, propose improvements.
• Troubleshoot infrastructure, platform, and performance issues.
• Manage VMware, AWS, and virtualized servers.
• Collaborate across teams to improve deployment processes.
• Contribute to disaster recovery testing and business continuity.

Skills

Linux

Kubernetes

Automation

Ansible

Python

Shell scripting

Cloud platforms

OpenShift

VMware Tanzu

CI/CD

English & Chinese

Education

Bachelor's degree in Computer Science or related field

Tools

VMware Tanzu

OpenShift

Kubernetes

Ansible

Veritas Cluster Server

Veritas Storage Foundation

BigFix

ServiceNow

Job description

Position Overview

We are looking for an experienced Linux Administrator with strong DevOps expertise to support and manage enterprise Linux infrastructure, container platforms, and cloud environments. The role is responsible for both project delivery and day-to-day operational support, ensuring high availability, security, performance, and scalability across physical, virtual, and cloud-based environments. The successful candidate will possess strong technical skills in Linux, Kubernetes, automation, and infrastructure management, with a proactive mindset and a passion for continuous learning.

Key Responsibilities

Administer, maintain, and support enterprise Linux environments to ensure 24x7 service availability.

Manage and optimize container platforms including Kubernetes, OpenShift, and VMware Tanzu.

Provide L1, L2, and L3 technical support for infrastructure and platform-related incidents.

Perform server installations, upgrades, patching, maintenance, and system hardening activities.

Develop and maintain automation scripts and tools to improve operational efficiency.

Implement infrastructure automation using Ansible and other configuration management solutions.

Monitor system performance, capacity utilization, and availability, recommending improvements where necessary.

Troubleshoot and resolve infrastructure, platform, and performance-related issues.

Build and maintain physical servers, virtual machines, and cloud infrastructure environments.

Manage VMware, AWS, and virtualized server environments.

Collaborate with cross-functional teams to enhance deployment processes and operational workflows.

Participate in disaster recovery testing and business continuity planning exercises.

Support scheduled maintenance activities, weekend changes, and on-call rotations.

Maintain documentation and ensure compliance with operational standards and best practices.

Contribute to infrastructure scalability, security, and stability initiatives.

Requirements

Bachelor's degree in Computer Science, Information Technology, or a related discipline.

8-10 years of experience in Linux system administration and cloud infrastructure support.

Strong expertise in Red Hat Enterprise Linux across physical and virtual environments.

Hands-on experience with Kubernetes, OpenShift, Tanzu, or similar container orchestration platforms.

Proven experience deploying and managing physical and virtual servers.

Solid understanding of cloud platforms such as AWS and Azure.

Strong automation skills using Ansible or equivalent tools.

Proficiency in scripting languages such as Shell, Python, or Perl.

Experience managing enterprise server hardware and infrastructure architectures.

Excellent troubleshooting, analytical, and problem-solving skills.

Strong communication skills in both English and Chinese.

Ability to work independently and effectively in a fast-paced production environment.

Preferred Qualifications

RHCE, RHCT, or other Linux-related certifications.

Knowledge of Microsoft Windows Server administration.

Experience with Veritas Cluster Server and Veritas Storage Foundation.

Familiarity with enterprise tools such as BigFix, OneView, ITRS, ServiceNow, SCOM, and CyberArk.

Understanding of VMware virtualization and SAN technologies.

Experience with Docker and container technologies.

Exposure to enterprise database and clustering environments is advantageous.

**This position is offered through a strategic partnership between Don Nelson Technology Limited and NP Solution Limited.