Senior Infrastructure Network Engineer

Hcl Comnet; Singapore; Hybrid; SGD 90,000 - 150,000; Full time

Job summary

Hcl Comnet is seeking a seasoned Network Engineer to manage, monitor, and optimize enterprise LAN/WAN infrastructure across on-site and customer environments. You will troubleshoot complex outages, configure routing, switching, DDI, wireless, and security solutions, and support security policies.

Collaboration with cross-functional teams and ongoing documentation are essential. Ideal candidates have 7+ years of experience, strong Cisco/Palo Alto/Fortinet/Aruba expertise, and relevant

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• 7+ years in network engineering, operations, or enterprise infrastructure roles.
• Hands-on experience with LAN/WAN, routing & switching, and connectivity services.
• Strong knowledge of DNS, DHCP, and IPAM; wireless, firewall, and security basics.
• Experience with performance monitoring, capacity planning, incident management, RCA.
• Experience with Cisco, Palo Alto, Fortinet, Aruba, and VPN/remote access solutions.
• Proven ability to troubleshoot complex network/infrastructure issues in fast-paced environments.
• Excellent communication, collaboration, and stakeholder management.
• Certifications such as CCNP/CCIE, NSE, or PCNSE are preferred.
• Fluency in English; willingness to work in hybrid onsite/customer location.

Responsibilities

• Manage and support enterprise LAN/WAN infrastructure ensuring high availability and performance.
• Monitor network health, analyze performance metrics, and plan capacity enhancements.
• Troubleshoot complex network, connectivity, and infrastructure issues with minimal business impact.
• Configure routing, switching, DDI, wireless, and network security solutions.
• Administer firewall, VPN, and secure remote access platforms per security policies.
• Collaborate with internal teams and vendors on upgrades, migrations, and projects.
• Participate in incident, problem, and change management with risk mitigation.
• Develop and maintain network documentation, diagrams, and runbooks.
• Provide guidance to junior team members and drive operational excellence.
• Engage with customers and stakeholders to deliver reliable network services.

Skills

Network engineering

LAN/WAN management

Routing & switching

DDI (DNS, DHCP, IPAM)

Firewall administration

Network security principles

Performance monitoring

Capacity planning

Incident management & RCA

Stakeholder management

Communication & collaboration

Education

Bachelor’s degree in Computer Science, Information Technology, or related field

Tools

Cisco

Palo Alto

Fortinet

Aruba

VPN / remote access solutions

Job description

Job Responsibilities

• Manage, maintain, and support enterprise network infrastructure, ensuring high availability, reliability, and optimal performance across LAN, WAN, wireless, and remote access environments.
• Monitor network health, analyze performance metrics, and proactively identify opportunities for capacity planning, optimization, and continuous improvement.
• Troubleshoot and resolve complex network, connectivity, and infrastructure issues while minimizing business impact and ensuring adherence to service level agreements (SLAs).
• Configure, implement, and support routing, switching, DDI (DNS, DHCP, IPAM), wireless, and network security solutions.
• Administer and maintain firewall technologies, VPN solutions, and secure remote access platforms in alignment with organizational security policies.
• Collaborate with internal teams, vendors, and stakeholders to support infrastructure projects, system upgrades, migrations, and transformation initiatives.
• Participate in incident, problem, and change management processes, ensuring timely resolution and effective risk mitigation.
• Develop and maintain technical documentation, network diagrams, operational procedures, and knowledge base articles.
• Provide technical guidance and support to junior team members while contributing to a culture of operational excellence and continuous improvement.
• Work closely with customers and business stakeholders to understand requirements and deliver reliable, customer-focused network services.

Job Requirements

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• Minimum 7 years of experience in network engineering, network operations, infrastructure support, or related network services roles within enterprise environments.
• Hands-on experience managing and supporting enterprise LAN/WAN infrastructure, routing and switching technologies, and network connectivity services.
• Strong knowledge of DDI (DNS, DHCP, and IP Address Management), wireless networking, firewall administration, and network security principles.
• Proven experience with network performance monitoring, capacity planning, incident management, and root cause analysis.
• Experience working with enterprise networking technologies such as Cisco, Palo Alto, Fortinet, Aruba, and VPN/remote access solutions.
• Demonstrated ability to troubleshoot complex network and infrastructure issues in fast-paced, mission-critical environments.
• Strong customer engagement, stakeholder management, and service delivery capabilities.
• Excellent communication and collaboration skills, with the ability to work effectively across cross-functional and geographically distributed teams.
• Experience supporting infrastructure transformation, migration, or modernization projects is highly desirable.
• Professional certifications such as Cisco CCNP/CCIE, Fortinet NSE, or Palo Alto PCNSA/PCNSE are preferred.
• Fluency in the local language is required, with good written and verbal communication skills in English.
• Willingness to work in a hybrid environment with a minimum of three days onsite at the customer location.