Senior Network & Server Engineer (Up To Team Leader) - Thưởng 2 Lần/Năm

Introduction of KDDI Vietnam Corporation
KDDI Vietnam is the Vietnam branch of KDDI, the second largest telecommunications company in Japan, and aims to contribute to industrial development in Vietnam through the development of telecommunications and IT infrastructure for private companies and support for public projects.
KDDI Vietnam has more than 20 years of business history in Vietnam and has extensive experience in supporting Japanese companies mainly in the industrial sector.
Most of our clients are Japanese companies, but we also have clients from Korea and other nationalities, Vietnamese domestic companies, and the government. And we have branch offices in various countries in Southeast Asia, and we utilize these networks to support our clients' global expansion.

Role Overview

We are also seeking a Senior Network/ Server Engineer who is a maintenance professional and has the potential to become a Maintenance Team Leader in the future.
This role requires deep understanding of IT maintenance, strong troubleshooting skills, and the ability to educate, guide, and lead team members, while ensuring high-quality customer support.

Key Responsibilities

Advanced IT Maintenance & Customer Success

• Take responsibility for stable operation of complex customer IT environments
• Handle high-level incidents and perform root cause analysis
• Act as a key technical contact for customers during operations
• Ensure system performance, availability, and security

Supported Technologies

• Network & Security (Routing, Switching, Firewall, Wireless)
• Microsoft Server platforms, Microsoft 365, Azure
• Virtualization (Hyper-V, VMware)
• Backup and storage solutions
• Endpoint and physical IT infrastructure

Team Development & Leadership

• Mentor and train junior maintenance engineers
• Review incident handling and maintenance quality
• Improve maintenance procedures, standards, and documentation
• Coordinate maintenance tasks within the team
• Gradually take responsibility for team management and quality control

• At least 4 years of experience in IT, with strong focus on IT maintenance and operations
• Solid understanding of:
o Routing & Switching, Wireless, Voice
o SAN / Storage Systems
o Active Directory, Exchange
o Microsoft 365, Azure
o Microsoft Hyper-V, VMware
• Experience with products such as:
o Cisco, Fortinet, Juniper, Palo Alto
o HP, DELL-EMC, IBM, Nutanix
• Strong troubleshooting, documentation, and communication skills
• Ability to guide, educate, and support team members
• Clear understanding of the importance and professionalism of Maintenance work
• Good English communication skills
• IT certifications are a strong advantage
• Reliable, proactive, and leadership-oriented mindset
• Age: 25-40 years old (flexible depending on experience)
• Japanese language skill is preferable (Good to have)

• Good chance to study and develop career path stably.
• Working travel by company car or taxi/ GRAB; Mobile phone allowance (for particular position).
• Social insurance contributions based on 100% of Gross Salary.
• Annual Salary Review once a year in June.
• Two Bonuses in mid-year and at the end of the year (depending on company performance).
• Annual health check-up.
• Annual company trip and union-sponsored trip.
• Register for Health Insurance 24/7 after 2 months of Probation.
• International working environment with opportunities to learn Japanese working. style and develop foreign language skills.
• Preference will be given to candidates who can start immediately.