System Administrator
PT ITSEC Asia Tbk
Fewer Applicants- Full-Time
- On-site • Jakarta Selatan
- Undisclosed
Job Description
- Own, configure, and maintain operating system environments (Linux/Ubuntu/CentOS or Windows Server) to ensure platform stability, performance, and security.
- Develop and maintain automation scripts and configuration management workflows for system provisioning, configuration, and deployments.
- Perform deep-level technical troubleshooting to identify and permanently resolve root causes of complex system and infrastructure failures.
- Establish and enforce system hardening standards, access controls, and automated patching procedures.
- Evaluate, test, and integrate modern infrastructure technologies and tools to improve system performance and reliability.
- Optimize system monitoring, logging, and metrics collection to ensure system health and proactive incident management.
- Collaborate with engineering, product, and platform teams to support infrastructure requirements without compromising system stability.
- Maintain clear technical documentation for infrastructure configurations, procedures, and troubleshooting workflows.
Requirements
- Bachelor’s degree in Computer Science, Information Technology, Software Engineering, or a related technical field (or equivalent practical experience).
- Minimum 7 years of experience managing production-grade systems and infrastructure environments.
- Operating Systems: Deep knowledge of OS internals, including memory allocation, storage/filesystems, process management, and networking stacks (Linux/Unix or Windows Server).
- Automation & Scripting: Strong scripting skills in Python, Bash, or PowerShell, alongside experience with configuration management tools (such as Ansible, SaltStack, or Puppet).
- Virtualization & Containers: Experience with virtualization platforms (e.g., Proxmox) and container orchestration tools (such as Kubernetes or Docker).
- System Monitoring: Experience configuring and maintaining monitoring and logging solutions (e.g., Prometheus, Grafana, Loki, or APM tools).
- Security & Networking: Practical knowledge of network protocols, access control management, system hardening guidelines, and patch management.
- Strong analytical skills and a methodical approach to diagnosing and resolving complex technical issues.
- Ability to independently manage core infrastructure systems and make sound operational decisions.
- Willingness to objectively evaluate and adopt modern infrastructure technologies based on operational needs.
- Clear written and verbal communication skills to document system architectures and collaborate effectively across teams.
ITSEC is one of the leading cybersecurity companies in the APAC region, listed on the Indonesian Stock Exchange (IDX), with over 300 employees across five countries. We deliver end-to-end cybersecurity services and solutions, including Consulting Services, Security Solutions Integration, and Managed Security Services. ITSEC provides continuous IT infrastructure protection against multiplying cybersecurity threats and ensures compliance with increasingly demanding data protection and critical infrastructure regulations. Our expertise has been built over a decade of delivering thousands of high-quality cybersecurity projects, providing cutting-edge solutions in collaboration with world-class technology partners across financial, telecommunications, energy, transportation, manufacturing, and other critical industry sectors. We also have extensive experience in helping our customers with fraud prevention, Operational Technology (OT), and Industrial IoT (IIoT) security.
