Senior Infrastructure & Security Specialist

Job description

Server, Virtualization & Cloud Management:

• Administer enterprise servers (Windows, Linux), virtualization platforms (VMWare, Hyper-V), and cloud resources (AWS, Azure, CMC).
• Monitor performance, apply patches/updates, and ensure high availability.
• Implement backup and disaster recovery solutions to guarantee business continuity.
• Support cloud migration projects and drive cost optimization initiatives.

Network & Security Administration:

• Design, configure, and manage LAN, WAN, Wi-Fi, VPN, firewalls, IDS/IPS, and switching infrastructure.
• Perform advanced troubleshooting and optimize network performance and uptime.
• Deploy and enforce advanced security measures, including segmentation and intrusion prevention.

Identity & Access Management:

• Administer Active Directory, DNS, DHCP, and Group Policies.
• Manage user accounts, access rights, and authentication services.
• Ensure domain controller health, redundancy, and secure integration with enterprise systems.

IT Security & Compliance:

• Develop, implement, and enforce IT security policies and standards.
• Conduct vulnerability assessments, patching, penetration testing, and regular security audits.
• Ensure compliance with industry regulations (ISO, NIST, internal security frameworks).

IT Infrastructure Projects & Leadership:

• Plan, coordinate, and execute IT infrastructure projects, including migrations and upgrades.
• Collaborate with cross-functional teams and external vendors to ensure project success.
• Provide technical leadership and mentorship to junior IT staff.
• Establish best practices, system documentation, and operational standards.

Monitoring & Technical Support:

• Use monitoring tools (e.g., Zabbix, PRTG, SolarWinds) to proactively detect and resolve infrastructure issues.
• Analyze logs and alerts to ensure timely response to incidents.
• Provide tier 2/3 escalation support to minimize downtime and maintain service availability.

Your skills and experience

Education: 

• Bachelor's degree in Computer Science, Computer Engineering, Telecommunications, or a related field.

Experience:

• At least 5 years of experience in IT infratrusture, operations.

Work skills:

• Proficient in Windows Server, Linux, virtualization (VMware/Hyper-V).
• Experience in IT systems (AD, DNS, DHCP, RADIUS, Office 365, Ivanti, Azure AD).
• Strong knowledge of networking (TCP/IP, DNS, VLAN, VPN, routing, firewall).
• Experience with cloud platforms (AWS, Azure, CMC) and hybrid integration.
• Scripting and automation skills (PowerShell, Bash, Python).
• Familiarity with IT monitoring tools (Zabbix, PRTG, SolarWinds) and security tools (IDS/IPS, SIEM).
• Knowledge of IT security frameworks and compliance standards (ISO 27001, NIST, GDPR).

Soft skills:

• Problem-solving, analytical thinking, and risk-based decision-making.
• Strong communication, collaboration, and project management skills.
• Ability to work under pressure and manage multiple priorities.
• Proactive and responsible working attitude.

Why you'll love working here

1. Probation: 2 months with 85% basic salary
2. Working time: Mon to Fri ( 8:00AM – 5:00PM)
3. Working venue:  Floor 12, Royal Tower, 235 Nguyen Van Cu Street, District 1, HCMC
4. Annual  Leave: 12 days 
5. Personal Accident and Health-care Insurance 
6. Company product: provided every month after probation period
7. Performance Bonus: base on your KPI achievement