Network & Security Engineer

Opensource; Singapore; On-site; SGD 42,000 - 60,000; Full time

Job summary

Opensource is seeking an experienced network engineer to support deployment, configuration and maintenance of enterprise IT networks in Singapore. You will work with project teams to meet timelines, implement security appliances, and troubleshoot complex LAN/WAN environments.

The role emphasizes hands-on configuration of Cisco, Alcatel, Check Point, Palo Alto and Fortinet systems, plus collaboration with vendors and internal teams to ensure smooth project delivery and documented processes.

Qualifications

• Hands-on deployment and troubleshooting of enterprise network systems.
• Ability to translate client requirements into technical solutions.
• Ability to create and maintain accurate network diagrams and documents.

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, Alcatel, Check Point, Palo Alto and Fortinet technologies.
• 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.

Skills

Network troubleshooting

Documentation

Customer service

Teamwork

Independent work

Education

CCNA/CCNP

Tools

Cisco

Alcatel

Check Point

Palo Alto

Fortinet

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.