NETWORK ENGINEER

Salary: ฿30,000 – ฿45,000 per month

Role Summary

The Intermediate Network Engineer works for a network implementation and service support provider serving customers across all industry sectors. The role supports the implementation, operation, and maintenance of different customer network, firewall, security, and WLAN environments. It handles routine service requests and incidents as a Tier 1 support resource, performs standard configuration and implementation tasks using approved procedures, and escalates issues beyond its scope to senior engineers or vendors. The position is delivery and service focused and does not include sales responsibilities.

Key Responsibilities

· Provide Tier 1 support for network and security incidents and service requests, following documented procedures, troubleshooting guides, and escalation paths.

· Perform initial triage across multiple customer environments, collect relevant logs and details, assess service impact, keep tickets updated, and escalate unresolved or complex issues with clear diagnostic information.

· Monitor network, firewall, and WLAN alerts and dashboards; acknowledge events, perform first-line checks, and notify the appropriate teams when service impact is identified.

· Assist with routine configuration, deployment, maintenance, and replacement of switches, routers, wireless access points, controllers, and firewalls across customer sites under approved designs and change plans.

· Support basic troubleshooting of LAN/WAN connectivity, TCP/IP, VLANs, routing and switching, wireless access, VPN connectivity, and firewall policy or connectivity issues.

· Assist with firewall and security operations, including reviewing access requests, validating rule changes, checking logs, and following established security and approval processes.

· Carry out planned changes and implementation tasks, including pre-checks, approved configuration updates, post-change verification, and rollback steps when directed.

· Maintain accurate ticket notes and operational documentation, including device inventory, configuration backups, network diagrams, troubleshooting records, and change documentation.

· Coordinate with senior engineers, service desk teams, customer contacts, and vendor support to progress incidents and service requests for customers across different industry sectors within agreed SLAs.

· Follow operational, security, and change management procedures and contribute suggestions to improve runbooks and recurring support tasks.

Qualifications

· 2–3 years of experience in network engineering, network operations, infrastructure support, or a related technical role, preferably in a service provider, systems integrator, or customer-facing IT services environment.

· Working knowledge of TCP/IP, subnetting, Ethernet, VLANs, basic routing and switching, DNS, DHCP, and common connectivity troubleshooting methods.

· Exposure to enterprise networking or security products from one or more of the following vendors: Cisco, Arista, H3C, Fortinet, and Palo Alto Networks.

· Basic understanding of firewall concepts, security policies, VPNs, WLAN, wireless access points, and network monitoring tools.

· Ability to follow technical procedures carefully, document work clearly, prioritize support requests, and recognize when an issue must be escalated.

· Good communication and customer service skills, with the ability to explain technical findings clearly to users and technical teams.

· Willingness to participate in scheduled maintenance or out-of-hours changes when required.

Preferred Qualifications

· Entry-level or associate certifications in networking or security, such as Cisco CCNA, Arista ACE: L1/L2, H3C certification, Fortinet FCP/FCA, or Palo Alto Networks PCCET/PCNSA.

· Experience using ticketing systems, network monitoring platforms, and configuration backup or management tools.