Platform Linux Engineer

Quess Corp Limited; Singapore; On-site; SGD 70,000 - 110,000; Full time

Job summary

Quess Corp Limited in Singapore is seeking a seasoned Linux systems administrator to manage RHEL-based servers across development, testing, and production environments.

You will implement performance tuning, capacity planning, and security hardening while enabling automation with Ansible, Bash, and Python to improve reliability.

Qualifications

• Degree in Computer Science, Information Technology, or related field.
• Minimum 5+ years of Linux system administration in enterprise environments.
• Experience with RHEL, LVM, networking, and kernel tuning.
• Familiarity with CIS benchmarks and security hardening.

Responsibilities

• Install, configure, patch, and maintain Linux systems (RHEL-based).
• Perform OS tuning, performance optimization, and capacity planning.
• Provide Level 3 Linux support for incidents and issues.
• Support high availability and disaster recovery configurations.
• Develop and maintain automation using Ansible, Bash, and Python.
• Automate provisioning, patching, and configuration management workflows.
• Monitor system health, logs, and performance; troubleshoot bottlenecks.

Skills

RHEL / Linux

LVM

Kernel tuning

Networking

Ansible

Bash scripting

Python

Production environments

Large-scale systems

Education

Bachelor's degree in CS / IT

Tools

Docker

Kubernetes

Job description

//Candidates currently based in Singapore only, as the interview will be conducted face-to-face //

Key Responsibilities

• Install, configure, harden, patch, and maintain Linux systems (primarily RHEL-based distributions)
• Perform OS tuning, performance optimization, and capacity planning
• Ensure system security compliance (CIS benchmarks, patching, vulnerability remediation)

Infrastructure Operations

• Manage Linux systems across development, testing, and production environments
• Provide Level 3 support for Linux-related incidents and issues
• Support high availability and disaster recovery configurations

Automation & DevOps

• Develop and maintain automation using Ansible, Bash, and Python
• Automate provisioning, patching, and configuration management workflows
• Continuously improve system efficiency through infrastructure-as-code practices

System Monitoring & Reliability

• Monitor system health, logs, and performance using enterprise monitoring tools
• Troubleshoot system bottlenecks, kernel issues, and application dependencies
• Ensure high system availability and uptime

Hardware & Platform Support

• Support physical server infrastructure including installation and maintenance
• Coordinate with vendors and internal teams for hardware-related issues

Documentation & Compliance

• Maintain documentation of system configurations, procedures, and runbooks
• Ensure compliance with internal policies, security standards, and audit requirements

Requirement:

Education & Experience

• Degree in Computer Science, Information Technology, or related field
• Minimum 5+ years of experience in Linux system administration in enterprise environments

Core Technical Skills

• Strong hands-on expertise in RHEL / Linux (LVM, networking, kernel tuning, system internals)
• Experience with configuration management tools (Ansible preferred)
• Proficiency in shell scripting (Bash) and familiarity with Python
• Experience working in large-scale, production environments

Additional Skills (Preferred)

• Familiarity with containers (Docker/Kubernetes) is a plus
• Understanding of security hardening and compliance standards
• Red Hat certification (RHCSA/RHCE) is highly desirable
• ITIL certification is an advantage

Business Manager, Recruitment | Singapore