Senior System Administrator

Senior System Administrator - Aplus Careers | Career Page

Senior System Administrator

Phnom Penh, Cambodia

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Job Openings Senior System Administrator

About the job Senior System Administrator

Industry

NGO

Job Summary

Our client, a well-established NGO in Cambodia, is looking for a Senior System Administrator to manage, maintain, and improve its IT infrastructure, including networks, servers, cloud systems, and cybersecurity. The successful candidate will ensure system reliability, security, and performance while providing technical support to end users.

Main Responsibilities

• Manage, maintain, and monitor network infrastructure, including servers, switches, routers, LAN, VPN, and firewalls.
• Administer Windows and Linux servers, VMware infrastructure, Active Directory, and cloud-based systems.
• Monitor daily backups, databases, virtual machines, and disaster recovery procedures.
• Maintain and improve system security through vulnerability assessments, penetration testing, and risk mitigation.
• Manage cloud infrastructure, including VPS, Docker, and related services.
• Maintain IT services such as email, Google Workspace, file servers, ERP, HR systems, PBX, and CCTV.
• Support IT automation and system integration to improve operational efficiency.
• Provide technical support to end users and prepare technical documentation.
• Coordinate technical maintenance with IT technicians and the IT Assets Administrator.
• Ensure system availability, data protection, and compliance with organizational policies.

Main Requirements

• Bachelor's degree in Computer Science, Networking, Telecommunications, or a related field.
• At least 3 years of relevant experience in system administration, networking, or IT infrastructure.
• Strong knowledge of network administration, server management, and cybersecurity.
• Good understanding of risk assessment, system monitoring, and disaster recovery.
• Good command of spoken and written English.
• Strong teamwork, problem-solving, communication, and time-management skills.
• Ability to work under pressure, adapt to changes, and deliver quality results.
• Commitment to the NGO's mission, core values, and child protection policies.

Technical Skills

• Networking: Cisco, UniFi, FortiGate, MikroTik, routing, VPN, and firewall management.
• Systems: Windows Server, Linux, Active Directory, VMware, and MySQL Server.
• Backup and security: Veeam Backup, endpoint protection, vulnerability assessment, and penetration testing.
• Cloud and infrastructure: Google Cloud, AWS, DigitalOcean, Docker, and VPS management.
• Productivity and services: Google Workspace, email systems, PBX, and file servers.

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