Senior Linux Engineer (Weekend Operations)

Ambition; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Ambition is seeking a Senior Linux Platform Operations Engineer to own large-scale Linux environments in a production setting. You will focus on operational ownership, incident management, and platform reliability while driving automation and continuous improvement.

The role requires hands-on leadership in production support, change management, and cross-team collaboration to ensure high availability of mission-critical systems.

Qualifications

• 8+ years of Linux systems administration in large-scale 24x7 environments.
• Deep expertise in Linux OS administration, performance tuning, troubleshooting, and kernel fundamentals.
• 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).
• Hands-on experience with Grafana and Prometheus for monitoring.
• Familiarity with AWS, GCP, Docker and Kubernetes.
• Experience with Infrastructure as Code and DevOps tooling (Terraform, Git, CI/CD).
• Strong problem-solving skills for high-severity incidents.

Responsibilities

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

Skills

Linux administration

Incident management

Automation scripting

Python

Shell scripting

Monitoring

Grafana

Prometheus

Terraform

Git

CI/CD

AWS/GCP

Kubernetes

Docker

Salt/Puppet/Ansible

Tools

Salt

Puppet

Ansible

Grafana

Prometheus

Terraform

Git

CI/CD pipelines

Docker

Kubernetes

Job description

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

They are looking for a Senior Linux Platform Operations Engineer to provide hands-on operational ownership of large-scale Linux environments. This is a highly operational role focused on production support, incident management, maintenance execution, platform reliability, and continuous improvement. The successful candidate will act as a senior escalation point for Linux infrastructure issues and play a key role in ensuring the stability and availability of mission-critical systems.

Key Responsibilities

• Own the operational health, availability, and performance of Linux infrastructure across production and non-production environments.
• Lead and execute weekend 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

• Weekend-focused operational coverage model.
• Early morning starts will be required to support global operations (7AM SGT)