Linux System Engineer

About the role

A leading global financial markets and technology organisation operating high-availability infrastructure is looking for a Linux Engineer to own the day-to-day operation of large-scale Linux environments. This is a highly operational, production-support-focused role covering platform stability, incident response, maintenance, system reliability and continuous improvement, with weekend support built into the core schedule.

Key responsibilities

• Own the health, availability and performance of Linux infrastructure in production and non-production environments
• Lead maintenance, upgrades, patching, failover testing and recovery exercises
• Act as the senior escalation point for Linux incidents, driving triage, resolution and root cause analysis
• Maintain bare-metal servers, storage systems and configuration management platforms
• Execute and monitor production changes under change management processes
• Build automation with Python and shell scripting and support monitoring, observability and capacity management
• Create runbooks, procedures and recovery documentation
• Work with Engineering, SRE, Security and Infrastructure teams to improve reliability

Required profile

• At least 8 years of Linux systems administration in large-scale, 24x7 environments
• Deep Linux expertise, including performance tuning, troubleshooting and kernel fundamentals
• Experience with bare-metal servers and enterprise storage (SAN, NAS, RAID, NVMe)
• Hands-on monitoring and observability experience
• Familiarity with cloud and container technologies
• Experience with Infrastructure as Code and DevOps tooling
• Strong problem-solving under pressure during high-severity incidents

Required skills

• Configuration management: Salt, Puppet or Ansible
• Python and shell scripting
• Grafana and Prometheus
• AWS, GCP, Docker and Kubernetes
• Terraform, Git and CI/CD pipelines

Schedule: 5-day week, 7:00 AM to 4:00 PM (SGT), including Saturday and Sunday, with early morning support for global operations.