IT Specialist (Infrastructure And Network Focus) HN

Network and Infrastructure

• Maintain and troubleshoot business LAN/WAN, switching, routing, wireless, VPN, DHCP, DNS, NAT, VLAN, trunking, ACL, and firewall-related services.
• Monitor network availability, performance, logs, alerts, SLA indicators, and uptime; investigate incidents using structured evidence and root-cause analysis.
• Apply secure network practices including segmentation, least privilege, secure authentication, wireless security, and mitigation of common Layer 2 and Layer 3 threats.
• Support infrastructure changes and deployments across office, branch, or multi-site environments using controlled and safe implementation practices.

Microsoft 365 Administration

• Administer and troubleshoot Microsoft Entra ID users, groups, roles, authentication, and access.
• Support Exchange Online mailboxes, permissions, mail flow, and service issues.

Helpdesk, Ticketing, and Asset Management

• Maintain accurate asset records, assignments, movements, reconciliation results, and audit evidence in the company inventory system, including MISA where applicable.

Level Expectations

• Technical independence: Owns complex tasks and technical decisions with minimal supervision.
• Troubleshooting : Leads root-cause analysis, identifies systemic improvements, and prevents recurrence.
• Documentation: Creates standards, diagrams, SOPs, change records, and operational guidance.
• Collaboration: Coordinates stakeholders, supports decisions, and mentors junior colleagues.

Required Knowledge and Skills

• 5 years of working experience in the relevant role
• Understanding of OSI and TCP/IP concepts, subnetting, VLSM, CIDR, VLANs, routing, switching, DHCP, DNS, NAT, VPN, ACLs, and firewall principles.
• Ability to troubleshoot network connectivity and service issues in a safe, logical sequence using technical evidence.
• Working knowledge of Microsoft 365 services, especially Entra ID, Exchange Online, Intune, Defender, and Purview.
• Strong documentation, communication, prioritization, and stakeholder coordination skills.
• Professional working ability in English (Written), intermediate English speaking skills; Chinese is an advantage.

Experience Profile

• General experience: Substantial hands-on experience owning complex infrastructure and Microsoft 365 operations.
• Network environment: Demonstrated delivery or ownership in multi-site or multi-branch environments.
• Equipment exposure: Strong operational depth across one or more enterprise network platforms, including design and advanced troubleshooting.

Preferred Qualifications

• CCNA, CCNP, CompTIA Network+, or equivalent networking certification.
• Hands-on exposure to centralized logging or monitoring platforms such as Rsyslog, Syslog-ng, ELK, Graylog, or equivalent

• Salary range: Up to 30M Gross
• Salary at 100% during the probationary period
• 90% contribution of the gross salary to social insurance
• 20 days leave (12 days of annual leave and 8 days of sick leave)
• Full working equipment will be provided Annual Health Checkup
• Activities: Birthday party, Employee engagement activities.