Platform Linux Engineer

NETS; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

NETS Singapore is seeking a skilled Linux Engineer to design, implement and support enterprise Linux-based infrastructure across data centre environments. The role focuses on RHEL/Linux system administration, automation, performance tuning, and platform reliability while supporting mission-critical systems.

The ideal candidate will have strong hands-on experience in Linux platforms, automation, and enterprise operations, with the ability to operate in a fast-paced, production-critical

Qualifications

• Degree in Computer Science, Information Technology, or related field.
• Minimum 5+ years of experience in Linux system administration in enterprise environments.
• Strong hands-on expertise in RHEL / Linux and kernel tuning.
• Experience with Ansible for configuration management.

Responsibilities

• Install, configure, harden, patch, and maintain Linux systems (RHEL-based).
• Perform OS tuning, performance optimization, and capacity planning.
• Ensure security compliance (CIS benchmarks, patching).
• Manage Linux systems across development, testing, production environments.
• Provide Level 3 support for Linux incidents and DR configurations.
• Develop automation using Ansible, Bash, and Python; IaC practices.

Skills

RHEL / Linux

LVM

Kernel tuning

Shell scripting (Bash)

Python

Ansible

Large-scale production

Education

Degree in Computer Science or related field

Tools

Ansible

Docker

Kubernetes

Job description

The NETS Group is a leading payments services group, enabling digital payments for merchants, consumers and banks across the entire payments value chain.

The Group operates Singapore’s national debit scheme enabling customers of DBS Bank/POSB, HSBC, Maybank, OCBC Bank, Standard Chartered Bank and UOB to make payments using their ATM cards or mobile devices at more than 130,000 acceptance points in the country as well as online payments.

Position Summary

We are seeking a skilled Linux Engineer to design, implement, and support enterprise Linux-based infrastructure across data centre environments. The role focuses on RHEL/Linux system administration, automation, performance tuning, and platform reliability while supporting mission-critical systems. The ideal candidate will have strong hands-on experience in Linux platforms, infrastructure automation, and enterprise operations, with the ability to operate in a fast-paced, production-critical environment.

Key Responsibilities

Linux System Administration

• 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

Network for Electronic Transfers (Singapore) Pte Ltd.