[HCM] Network Administrator (onsite)

We are looking for a Network Administrator to maintain, monitor, and troubleshoot enterprise network infrastructure. The ideal candidate should have hands-on experience in LAN, Wi-Fi, VPN, network access authentication, and IT service management systems.

JOB DESCRIPTION

• Network Incident Management
  • Receive, investigate, troubleshoot, and resolve network incidents and service requests through ServiceNow.
  • Troubleshoot LAN connectivity issues, including 802.1X authentication failures, network port connectivity, and faulty network cables.
  • Diagnose 802.1X authentication issues using Windows Certificate Manager (certlm.msc).
  • Investigate network access and authentication issues through Aruba ClearPass, including Access Tracker and Endpoints, using device MAC addresses.
  • Troubleshoot VPN connectivity via Citrix, including checking user group membership and access permissions.
  • Perform basic network connectivity checks and escalate complex incidents to the relevant teams when required.
• Network Infrastructure Operations
  • Monitor network devices and services using SolarWinds and automated scripts.
  • Manage and troubleshoot enterprise network infrastructure, including:
    • Access Switches: Aruba/HPE 3810M and 6300 series.
    • Core Switches: Cisco Nexus 9000 series.
    • Routers: Cisco ISR 9901 and 9902 series.
    • Wireless Infrastructure: Aruba 535 and 325 series.
    • Firewalls: Cisco 5430 series - monitoring and administration subject to Security Team authorization.
  • Perform routine network health checks and follow up on alerts generated by monitoring systems.
  • Maintain network connectivity and support daily network operations.
• Network Cabling and Connectivity
  • Inspect, test, and troubleshoot LAN cabling and physical connectivity issues.
  • Work with Cat6A CommScope structured cabling systems, including patch cords, patch panels, and network outlets.
  • Install and activate new network ports according to approved procedures.
  • Label both ends of new network connections in accordance with existing labeling standards.
  • Support fiber-optic connectivity and ODF operations:
    • Buildings B8, B9, and B10: Single-mode fiber with LR-type SFP transceivers.
    • Other buildings: Multimode fiber with MM-type SFP transceivers.
• Change Management
  • Raise, implement, and update network changes in ServiceNow in accordance with the change management process.
  • Prepare and maintain change implementation plans and run sheets using existing templates.
  • Follow approved change windows, implementation procedures, validation steps, and rollback plans.
  • Update ticket records and document implementation results.
• Monitoring and Reporting
  • Monitor network devices and services through SolarWinds.
  • Execute and maintain operational scripts used for daily monitoring and automated email notifications.
  • Review monitoring alerts, identify potential network issues, and coordinate troubleshooting activities.

REQUIREMENTS

• Associate’s degree in Computer Science, Information Technology, or a related field, or equivalent work experience.
• 02+ years of experience working in Network.
• Basic knowledge of networking concepts (TCP/IP, DNS, DHCP, VPN) and networking hardware.
• Familiarity with network monitoring tools and software.
• Strong troubleshooting and problem-solving skills.
• Ability to work independently and as part of a team.
• Basic understanding of cybersecurity principles.
• Willingness to learn and adapt to new technologies and methodologies.
• Relevant certifications (e.g., CompTIA Network+, Cisco CCNA) are a plus.
• Good communication in English + willing to onsite client.

BENEFITS

• Highly competitive salary and bonus, plus several additional benefits.
• Productivity bonus added according to the business results of the Company
• Welfare package of Holiday 9 million/year.
• Consider periodic salary increases once a year. Or an unexpected pay rise based on personal accomplishment.
• Opportunity to work on challenging international projects.
• Being part of a rapidly expanding organization.
• Possibility to gather certificates and participate in world-class courses.
• Laptop and facilities provided.