Senior Network Infrastructure & Firewall Lead Engineer

Opensource Pte Ltd; Singapore; On-site; SGD 70,000 - 120,000; Full time

Job summary

Opensource Pte Ltd in Singapore is seeking a Project Engineer (Network infra and Firewall) to lead deployment, configuration, integration, and optimization of complex enterprise network and security solutions. You will provide architectural guidance, collaborate with project managers, and ensure delivery meets scope, timelines, and quality standards while maintaining documentation and knowledge sharing.

The role requires hands-on experience with switches, routers, firewalls and related security

Qualifications

• Diploma or Degree in Computer Science/Information Technology/Computer Engineering or related disciplines.
• Hands-on experience with network devices: switches, routers, firewall, UPS, etc.
• Experience liaising with users and vendors to define requirements and deliver technical solutions.
• Experience in network security solution design, planning, risk assessment, implementation and validation.
• Certification in networking (e.g., CCNA, CCNP) or firewall technologies preferred.
• Strong communication and analytical skills; proactive and independent team player.

Responsibilities

• Lead deployment, configuration, integration, and optimization of complex enterprise network and security solutions.
• Act as technical lead for mid to large scale projects across multidisciplinary teams.
• Collaborate with Project Managers to ensure scope, timelines, quality, and requirements.
• Provide advanced support for network security platforms (Cisco, Palo Alto, Fortinet, Check Point, etc.).
• Drive root cause analysis, incident resolution, and escalation for network security issues.
• Prepare and maintain high-level and low-level designs, baselines, and installation guides.
• Conduct knowledge-sharing sessions and post-incident reviews to uplift team capability.
• Ensure compliance with security and governance requirements; provide project status inputs.

Skills

Network security

Project delivery

Vendor liaison

Design & planning

Communication

Independent worker

CCNA/CCNP

Education

Bachelor's or Diploma in Computer Science/Information Technology/Computer Engineering or related

Tools

Cisco devices

Firewalls

Solarwinds

Cisco ISE

Palo Alto

Check Point

Fortinet

Job description

Opensource Pte Ltd in Singapore is seeking a Project Engineer (Network infra and Firewall) to lead deployment, configuration, integration, and optimization of complex enterprise network and security solutions. You will provide architectural guidance, collaborate with project managers, and ensure delivery meets scope, timelines, and quality standards while maintaining documentation and knowledge sharing.

The role requires hands-on experience with switches, routers, firewalls and related security