Principal Linux Engineer

AMBITION GROUP SINGAPORE PTE. LTD.; Singapore; On-site; SGD 180,000 - 260,000; Full time

Job summary

Ambition Group Singapore PTE. LTD. is partnering with a leading global financial markets and technology organisation to recruit a Principal Linux Engineer.

You will own hands-on operations for large-scale Linux environments, focusing on platform stability, incident response and continuous improvement. The role requires weekend coverage as part of the core schedule and close collaboration with SRE, Security and Infra teams to ensure seamless production operations across global infrastructure,

Qualifications

• 8+ years of Linux systems administration in large-scale 24x7 environments.
• Deep Linux OS administration, performance tuning, troubleshooting, and kernel basics.
• Experience with configuration management tools such as Salt, Puppet, or Ansible.
• Proficiency in Python and Shell scripting for automation.
• Experience with bare-metal servers and enterprise storage (SAN/NAS/RAID/NVMe).
• Experience with monitoring/observability (Grafana/Prometheus).
• Familiarity with cloud and container tech (AWS, GCP, Docker, Kubernetes).
• Experience with Infrastructure as Code and DevOps tooling (Terraform, Git, CI/CD).
• Strong problem-solving during high-severity incidents.

Responsibilities

• Own the operational health, availability, and performance of Linux infrastructure across production and non-production environments.
• Lead maintenance activities, upgrades, patching, failover testing, and recovery exercises.
• Serve as senior technical escalation point for Linux incidents, driving triage and RCA.
• Administer and maintain bare-metal Linux servers, storage systems, and CM platforms.
• Execute and monitor production changes per change management processes.
• Develop and maintain operational automation using Python and Shell scripting.
• Support monitoring, observability, and capacity management via dashboards and analysis.
• Create and maintain runbooks and recovery documentation.
• Collaborate with Engineering, SRE, Security, and Infra teams to improve reliability.

Skills

Linux Admin

Python

Shell scripting

Grafana

Prometheus

AWS/GCP

Terraform

Salt/Puppet/Ansible

CI/CD

Tools

Salt

Puppet

Ansible

Terraform

Git

Docker

Kubernetes

Job description

Our client is a leading global financial markets and technology organisation that operates high-availability infrastructure supporting customers around the world.

They are looking for a Principal Linux Engineer to provide hands-on operational ownership of large-scale Linux environments. This is a highly operational, production support-focused role with responsibility for platform stability, incident response, maintenance execution, system reliability, and continuous operational improvement. This position requires weekend support as part of the core working schedule.

Key Responsibilities

• Own the operational health, availability, and performance of Linux infrastructure across production and non-production environments.
• Lead and execute maintenance activities, system upgrades, patching, failover testing, and recovery exercises.
• Act as the senior technical escalation point for Linux-related incidents, driving triage, resolution, and root cause analysis.
• Administer and maintain bare-metal Linux servers, storage systems, and configuration management platforms.
• Execute and monitor production changes in accordance with established change management processes.
• Develop and maintain operational automation using Python, Shell scripting, and infrastructure management tools.
• Support monitoring, observability, and capacity management through dashboards, reporting, and system analysis.
• Create and maintain operational procedures, runbooks, and recovery documentation.
• Collaborate with Engineering, SRE, Security, and Infrastructure teams to improve platform reliability and operational efficiency.

Requirements & Qualifications

• At least 8 years of Linux systems administration and infrastructure operations experience in large-scale, 24x7 environments.
• Deep expertise in Linux OS administration, performance tuning, troubleshooting, and kernel fundamentals.
• Strong experience with configuration management tools such as Salt, Puppet, or Ansible.
• Proficiency in Python and Shell scripting for automation and operational tooling.
• Experience supporting bare-metal server environments and enterprise storage technologies (SAN, NAS, RAID, NVMe).
• Hands-on experience with monitoring and observability platforms such as Grafana and Prometheus.
• Familiarity with cloud and container technologies including AWS, GCP, Docker, and Kubernetes.
• Experience with Infrastructure as Code and DevOps tooling, including Terraform, Git, and CI/CD pipelines.
• Strong problem-solving skills with the ability to perform effectively during high-severity incidents.

Work Schedule

• Working schedule: Wednesday to Sunday, 7:00 AM to 4:00 PM (SGT).
• Support for early morning operational activities is required to align with global infrastructure operations.