• Operate, monitor, and maintain production server systems, ensuring: Stability, Security, Performance.
• Install, configure, and operate Linux and Windows servers (VPS, Dedicated, On-premise).
• Design, deploy, and optimize the company’s internal network infrastructure, including: LAN / WAN / VLAN; Routers, Switches, Firewalls; VPN, NAT, Load Balancing.
• Build and operate server infrastructure to support internal systems and online services.
• Deploy, manage, and operate Docker / Docker Compose (Kubernetes experience is a strong plus).
• Configure and monitor: System security (Firewall, Fail2ban, SSL, access control), Server performance (CPU, RAM, Disk, Network).
• Monitor systems and set up alerts using monitoring tools such as Prometheus, Grafana, Zabbix, ETC.
• Perform backup and restore operations to ensure data availability and security.
• Collaborate with the Development team to optimize system performance and ensure applications run stably and efficiently.
• Troubleshoot network and server issues to ensure high availability across internal and customer-facing systems.

Required skills and qualifications

• Hands-on experience of at least 2 years in a similar role. IT degree is not required. 
• Required English Level: Able to read and understand technical documentation.
• Solid understanding of network fundamentals, including: TCP/IP, DNS, DHCP, HTTP/HTTPS; Firewall, VPN, Routing, VLAN.
• Strong experience in administering Linux servers (Ubuntu, CentOS, Rocky Linux).
• Hands-on experience with: Installing, configuring, and operating production servers; Deploying and managing Docker / container environments
• Experience in implementing and maintaining: System security; Server performance optimization; Strong troubleshooting skills, system-level thinking, and a proactive approach to incident handling.

Preferred to have: 

• Experience or familiarity with CI/CD pipelines.
• Knowledge of Cloud platforms such as AWS, GCP, or Azure.
• Experience with Kubernetes, High Availability (HA) architectures, and Load Balancing.

• Participation in SHUI in accordance with Vietnamese labor law.
• Annual leave and seniority-based annual leave.
• 13th-month salary, annual salary review, and holidays bonuses, based on annual KPI performance and the company’s business results.
• Opportunities for training and career development.
• A dynamic, young, and friendly working environment.