Senior Linux Administrator

ALTROCKS TECH PTE. LTD.; Singapore; On-site; SGD 70,000 - 100,000; Full time

Job summary

A leading company in technology solutions is looking for a Linux System Administrator with extensive experience in server management and Docker. The role involves ensuring high performance, security compliance, and achieving efficient deployments through automation. Candidates with 10+ years of hands-on experience with Linux systems will be preferred.

Qualifications

• 10+ years of hands-on experience with Linux system administration (Ubuntu, CentOS, RHEL).

Responsibilities

• Install, configure, and maintain Linux servers ensuring high availability.
• Design, deploy, and maintain Docker containers across environments.
• Automate tasks using shell scripting or Python.

Skills

Linux System Administration

Docker Administration

Automation & Scripting

Monitoring & Performance Tuning

Security & Compliance

Collaboration

Job description

Linux System Administration:

o Install, configure, and maintain Linux servers (CentOS, Ubuntu, Red Hat, etc.) and ensure high availability, security, and performance.

o Perform regular system updates, patching, and upgrades.

o Manage user permissions, file systems, and configurations in multi-server environments.

o Troubleshoot and resolve complex issues related to Linux systems.

• Docker Administration:

o Design, deploy, and maintain Docker containers across environments, ensuring efficient, scalable, and reliable deployments.

o Manage containerized applications, create Dockerfiles, and optimize Docker images.

o Monitor container performance and resolve issues related to container orchestration and networking.

o Integrate Docker with Continuous Integration/Continuous Deployment (CI/CD) pipelines.

• Automation & Scripting:

o Automate tasks and processes using shell scripting, Python, or other automation tools.

o Develop and maintain scripts for monitoring, reporting, and system health checks.

• Monitoring & Performance Tuning:

o Implement and configure monitoring tools to track server performance and container health.

o Proactively identify performance bottlenecks and optimize both system and application performance.

• Security & Compliance:

o Implement and enforce security best practices on Linux systems and Docker containers.

o Manage firewalls, access control lists (ACLs), VPNs, and other security protocols to ensure the integrity of the environment.

o Conduct regular security audits and ensure compliance with industry standards.

• Collaboration & Support:

o Work closely with development, DevOps, and infrastructure teams to ensure smooth deployments.

o Provide technical support and mentorship to junior administrators and other team members.

o Assist with troubleshooting and resolving issues within the production environment.

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Qualifications:

- 10+ years of hands-on experience with Linux system administration (Ubuntu, CentOS, RHEL).