Senior Systems Administrator—Automation & Reliability

PT ITSEC Asia Tbk; Jakarta Selatan; On-site; IDR 360,000,000 - 480,000,000; Full time

Job summary

PT ITSEC Asia Tbk is seeking an experienced Infrastructure Engineer to own, configure, and maintain production systems, ensuring platform stability, performance and security. You will develop and maintain automation scripts and configuration workflows for provisioning, deployment, and ongoing operations.

The candidate should have 7+ years managing production environments, deep OS knowledge, solid scripting, and hands-on familiarity with Proxmox, Kubernetes or Docker, plus monitoring tools.

Qualifications

• Bachelor’s degree in Computer Science, IT, Software Eng, or related field.
• Minimum 7 years managing production-grade systems and infrastructure.
• Deep knowledge of OS internals (Linux/Unix or Windows Server).
• Scripting in Python/Bash/PowerShell with config management tools.
• Experience with Proxmox, Kubernetes or Docker.
• Experience with monitoring/logging tools (Prometheus, Grafana, Loki).
• Strong analytical skills and ability to diagnose complex issues.
• Ability to independently manage core infrastructure systems.

Responsibilities

• Own, configure, and maintain OS environments for stability, performance, and security.
• Develop and maintain automation scripts and configuration workflows for provisioning and deployments.
• Troubleshoot root causes of complex system and infrastructure failures.
• Establish system hardening standards and automated patching procedures.
• Evaluate and integrate modern infrastructure technologies to improve performance.
• Optimize monitoring, logging, and metrics collection for proactive incidents.
• Collaborate with engineering and platform teams to support infra requirements.
• Document infrastructure configurations and troubleshooting workflows.

Skills

OS internals

Python scripting

Bash scripting

PowerShell

Ansible

SaltStack

Puppet

Proxmox

Kubernetes

Docker

Prometheus

Grafana

Loki

System hardening

Patch management

Technical writing

Cross-team collaboration

Education

Bachelor's degree in Computer Science/IT/Software Eng

Tools

Ansible

SaltStack

Puppet

Proxmox

Kubernetes

Docker

Prometheus

Grafana

Loki

Job description

PT ITSEC Asia Tbk is seeking an experienced Infrastructure Engineer to own, configure, and maintain production systems, ensuring platform stability, performance and security. You will develop and maintain automation scripts and configuration workflows for provisioning, deployment, and ongoing operations.

The candidate should have 7+ years managing production environments, deep OS knowledge, solid scripting, and hands-on familiarity with Proxmox, Kubernetes or Docker, plus monitoring tools.