兼职 Network Engineer (L2) 工作, 薪水 up to SGD 8,000, NTT Singapore Pte. Ltd. 公司招聘中 - Ricebowl

Role Overview

We are seeking an experienced Network Engineer (L2) on a contract basis to support and operate enterprise network infrastructure across LAN, WAN, and cloud environments. The role requires hands-on expertise in switching, firewall management, VPNs, DNS/DHCP, and network security.

You will be responsible for maintaining network performance, implementing configurations using infrastructure-as-code, and ensuring high availability, security, and compliance across all network systems.

Key Responsibilities

Network Infrastructure & Operations

• Manage and support LAN/WAN environments including VLANs, trunking, Spanning Tree, and Layer 3 routing.
• Configure and maintain Aruba switching infrastructure (VLAN provisioning, port and policy management).
• Monitor network performance, availability, and capacity to meet SLAs.

Firewall & Security Management

• Administer Fortinet FortiGate and MikroTik firewalls including rule lifecycle, NAT, and security profiles.
• Perform security patching (CVE) and ensure policy compliance.
• Monitor and respond to network security incidents and anomalies.

VPN & Remote Access

• Configure and manage SSL VPN and client VPN gateways.
• Administer user access, profiles, and VPN tunnel health monitoring.

Core Network Services

• Manage DNS, DHCP, and IPAM including zones, scopes, and IP allocation lifecycle.
• Configure and maintain load balancing (rules, health checks, listeners).

Cloud & Advanced Networking

• Support cloud networking environments (AWS/Azure/GCP) including virtual networks, routing, and security groups.
• Deploy and manage cloud network virtual appliance (VA) firewalls.
• Operate and maintain anti-DDoS solutions (on-prem and cloud-native).

Monitoring & Optimization

• Use Cisco DNA Centre and Cisco ThousandEyes for network monitoring and synthetic testing.
• Monitor QoS performance metrics and conduct trend analysis.
• Perform regular performance tuning and policy optimization.

Automation & Configuration Management

• Implement and manage Infrastructure as Code (IaC) using Terraform and Ansible.
• Maintain version-controlled configurations and reusable templates.

Support & Governance

• Provide L2 support for network incidents and service requests.
• Participate in change management (CAB) and maintain audit records.
• Maintain network documentation, runbooks, and topology diagrams.
• Coordinate with vendors and L3 teams for escalations where needed.

Required Skills & Competencies

• 2–5 years of experience in network engineering and operations
• Hands-on experience with LAN/WAN, VLANs, routing, and switching
• Strong experience with Aruba switches
• Experience managing Fortinet FortiGate and/or MikroTik firewalls
• Knowledge of VPN technologies (SSL VPN, client VPN)
• Experience with DNS, DHCP, and IPAM solutions
• Familiarity with network monitoring tools (Cisco DNA, ThousandEyes)
• Exposure to cloud networking concepts (AWS/Azure/GCP)
• Basic experience with Terraform and Ansible
• Strong troubleshooting and analytical skills

Preferred Skills

• Experience with load balancers and anti-DDoS solutions
• Knowledge of network security frameworks and compliance standards
• Scripting skills (Python, Bash)
• Relevant certifications (CCNA, NSE, Aruba, etc.)