Senior Network Security Engineer – Fortinet

We are looking for an experienced Network Security Engineer – Fortinet to design, implement, operate, and maintain secure and reliable network infrastructure using the Fortinet Security Fabric. The ideal candidate will have strong hands-on experience with FortiGate firewalls, VPN technologies, and network security solutions, ensuring robust protection of business systems while maintaining network stability, performance, and availability.

Key Responsibilities

• Configure, monitor, and maintain FortiGate firewalls, including policies, NAT, routing, and HA clusters.
• Manage site-to-site and remote-access VPN (IPsec, SSL VPN), as well as ZTNA.
• Monitor logs and security events via FortiAnalyzer and respond to security incidents.
• Manage centralized configurations and firmware updates via FortiManager.
• Apply security profiles, including IPS, web filtering, application control, and antivirus.
• Perform regular security reviews, firewall rule cleanup, and vulnerability patching.
• Troubleshoot network and connectivity issues across layers L2–L7.
• Maintain technical documentation, including network diagrams, change logs, and runbooks.
• Follow change management processes and report to managers.

Experience and Education

• 3–5 years of hands-on experience in network or network security engineering.
• At least 2 years of direct experience working with FortiGate in a production environment.
• Bachelor’s degree in IT, Computer Science, Telecommunications, or equivalent experience.
• Experience supporting enterprise or multi-site environments is a strong plus.

Certifications

Why you’ll love working here  

• Attractive salary and benefits packages, including full social insurance on salary. 

• 100% salary during Probation Period.

• Premium Healthcare and Accident Insurance coverage. 

• 14 days of leave, including 12 days of annual leave and 2 personal leave days. 

• English-speaking working environment.

• Gifts on special occasions + holidays (Tet, Full-moon festival, Birthday, Christmas etc.) 

• Employee Referral Program.

• Additional bonuses. (13th bonus, Talented retention bonus).

• Engaging in team-building activities, company trips, and year-end parties. 

• Diverse training opportunities for technical and soft skills. 

• Commitment to community development, including regular charity initiatives and blood donation drives.