Platform Linux Engineer

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.

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