System Administrator (Prometheus, Grafana OpenStack, Linux Administration, Azure)

EXASOFT CONSULTING PTE. LTD.; Singapore; On-site; SGD 80,000 - 120,000; Full time

Job summary

A leading technology consulting firm in Singapore is looking for a seasoned DevOps professional with extensive experience in Linux Administration and Cloud Operations. The ideal candidate will administer Linux systems, design and manage cloud infrastructures like AWS and Azure, and have deep knowledge of CI/CD pipelines and monitoring tools. This role involves significant automation and collaboration with cross-functional teams to enhance infrastructure performance.

Qualifications

• 12 years of strong background in Linux Administration, DevOps, and Cloud Operations.
• Proficient in AWS, Azure, OpenStack, and virtualization technologies.
• Experienced in Ansible, Puppet, and Shell scripting.
• Hands-on experience managing CI/CD pipelines with GitLab.
• Expertise in monitoring tools like Nagios, Prometheus, Grafana, and ELK.
• Skilled in database management and system troubleshooting.
• Familiar with RHEL upgrades and lifecycle management.

Responsibilities

• Administer and support Linux systems across various platforms.
• Design and manage cloud infrastructures ensuring high availability.
• Manage deployments using Ansible for automation.
• Implement and maintain Kubernetes and KVM environments.
• Develop CI/CD pipelines supporting integration and delivery.
• Automate configuration management using Ansible and Puppet.
• Lead migration of monitoring solutions to advanced platforms.
• Monitor infrastructure health using Prometheus and Grafana.
• Support system upgrades and troubleshooting activities.
• Administer and tune PostgreSQL and MySQL databases.
• Collaborate with teams to resolve production issues.

Skills

Linux Administration

DevOps

Cloud Operations

AWS

Azure

OpenStack

Ansible

Puppet

Shell scripting

CI/CD pipelines

Monitoring tools

PostgreSQL

MySQL

Tools

Git

Kubernetes

Prometheus

Grafana

Elastic Stack (ELK)

Netcool

Job description

Responsibilities

• Administer and support Linux systems across RedHat, Ubuntu, CentOS, and Debian platforms.
• Design, deploy, and manage AWS, Azure, and OpenStack infrastructures, ensuring high availability and scalability.
• Manage deployments across AWS and on-prem environments using Ansible for automation and consistency.
• Implement and maintain Kubernetes and KVM virtualization environments for workload orchestration and resource optimization.
• Develop and manage CI/CD pipelines using GitLab and Git, supporting continuous integration and delivery processes.
• Automate configuration management using Ansible, Puppet, and custom Shell scripts.
• Lead the migration of monitoring solutions from Nagios to advanced platforms and Netcool, improving observability and alerting.
• Monitor infrastructure health using Prometheus, Grafana, and Elastic Stack (ELK).
• Support RHEL upgrades, system patching, and troubleshooting activities to ensure operational stability.
• Administer and tune PostgreSQL and MySQL databases, ensuring performance and reliability.
• Collaborate with cross-functional teams to resolve production issues and streamline DevOps practices.

Requirements

• Experienced professional with 12 years of strong background in Linux Administration, DevOps, and Cloud Operations.
• Proficient in AWS, Azure, OpenStack, and related virtualization technologies.
• Experienced in Ansible, Puppet, and Shell scripting for deployment and automation.
• Hands‑on experience managing CI/CD pipelines with GitLab and Git.
• Expertise in monitoring and logging tools — Nagios, Prometheus, Grafana, Elastic Stack (ELK), and Netcool.
• Skilled in database management (PostgreSQL, MySQL) and system troubleshooting.
• Familiar with RHEL upgrades, patching, and lifecycle management.