Network & Security Engineer

Opensource; Singapore; On-site; SGD 60,000 - 100,000; Full time

Job summary

Opensource is seeking a skilled network engineer to provide deployment and implementation support for enterprise IT network services. You will work closely with project leads to meet deliverables and timelines, performing hands-on installation, configuration, migration, and validation of LAN/WAN/WLAN environments and security solutions.

You will configure and troubleshoot diverse devices including Cisco, Check Point, Palo Alto and Fortinet gear, support monitoring tools, and contribute to

Qualifications

• Hands-on experience with enterprise network gear and security appliances.
• Proven ability to install, configure, integrate, migrate and validate network/security solutions.

Responsibilities

• Provide deployment and implementation support for customers’ Enterprise IT Network Services.
• Work with Project Manager and Technical Lead to meet deliverables and timelines.
• Perform hands-on installation, configuration, integration, migration and validation of network and security solutions.
• Configure, implement and troubleshoot LAN/WAN/WLAN environments.
• Support network monitoring and appliances (SolarWinds, F5 LTM/GTM).
• Prepare and update technical documentation and test plans.
• Raise TAC/support cases with vendors until resolution.
• Support after-office-hours maintenance.

Skills

Cisco

Alcatel

Check Point

Palo Alto

Fortinet

Networking troubleshooting

Technical documentation

Education

CCNA/CCNP

Job description

Job Responsibilities

• Provide project deployment and implementation support for customers’ Enterprise IT Network Services.


• Work closely with the Project Manager and Technical Lead to fulfil project deliverables, timelines and technical requirements.


• Perform hands‑on installation, configuration, integration, implementation, migration and validation of network and security solutions.


• Configure, implement and troubleshoot LAN/WAN/WLAN environments.


• Perform hands‑on implementation and support involving:Cisco routers and switchesAlcatel network switchesCheck Point firewallsPalo Alto firewallsFortinet / FortiGate firewalls


• Support network security solutions and security appliances.


• Perform firewall policy/rule configuration, troubleshooting and implementation activities.


• Troubleshoot network connectivity, routing, switching, firewall and performance‑related issues.


• Support network monitoring and network appliances where required, including SolarWinds, F5 LTM/GTM and related technologies.


• Support infrastructure migration and upgrade activities.


• Prepare and update technical documentation including network diagrams, installation procedures, implementation plans, support documents and preventive maintenance documentation.


• Develop test cases and conduct testing / proof‑of‑concept activities for new hardware and software before deployment.


• Perform post‑implementation testing and validation.


• Raise and follow up TAC/support cases with principal vendors for complex technical issues until resolution.


• Support after‑office‑hours implementation and scheduled maintenance activities when required.

Job Requirements

• Hands‑on experience in Cisco, Alcatel, Check Point, Palo Alto and Fortinet technologies.


• Practical experience in implementation and troubleshooting of LAN, WAN and network security infrastructure.


• Hands‑on experience with Cisco routers and switches, including configuration and troubleshooting.


• Experience with enterprise firewall configuration, deployment and troubleshooting.


• Knowledge of network routing, switching, VLAN, TCP/IP and network security concepts.


• Experience with F5, Aruba, Cisco ISE, SolarWinds or A10 will be an advantage.


• Cloud infrastructure/networking exposure will be an advantage.


• Cisco certification such as CCNA / CCNP is preferred.


• Good analytical and problem‑solving skills.


• Good technical documentation and communication skills.


• Strong customer service orientation.


• Able to work independently as well as in a team‑oriented environment.


• Able to work flexible hours, especially during scheduled after‑office‑hours maintenance windows.