Senior Network Architect – Voice & Data Center (Cisco)

Cantellat Software; Singapore; On-site; SGD 120,000 - 240,000; Full time

Job summary

Cantellat Software in Singapore seeks a Senior Network Engineer/Specialist to design, implement, and manage voice transport and data center networks worldwide. Lead SIP, CUCM/CUBE, and Cisco ACI/Nexus ecosystems to support manufacturing and corporate operations.

You will optimize QoS, routing, and DR readiness, coordinating multi-site deployments and WAN/Cloud integration. Strong certifications and 10–20+ years of relevant experience are expected.

Qualifications

• 10–20+ years in enterprise network engineering with focus on voice transport and Cisco DC.
• Hands-on with Cisco ACI, Nexus platforms and DC fabric technologies.
• Strong experience with VoIP, SIP, SBCs, CUCM, CUBE and voice quality optimization.
• Deep knowledge of routing, QoS, multicast, and network performance engineering.
• Experience with Infoblox DNS/DHCP/IPAM and global multi-site networks.

Responsibilities

• Design, deploy, and support Voice Transport systems (SIP, RTP, SBCs, PRI) across global sites.
• Manage Cisco Collaboration platforms (CUCM, CUBE, Unity, IM&P) for enterprise voice.
• Maintain dial plans, call routing, QoS policies, codecs, and voice SLAs.
• Integrate voice with WAN/SD-WAN, MPLS, and cloud telephony platforms.
• Conduct voice traffic analysis, capacity planning, and performance tuning.
• Architect and operate Cisco ACI fabrics for data centers (multi-pod/site).
• Manage Cisco Nexus 9K/7K/5K, vPC, VXLAN, EVPN, spine-leaf architectures.
• Ensure high availability, redundancy, and disaster recovery for DC networks.
• Lead L2/L3 routing design using BGP, OSPF, EIGRP, MPLS, VRF.
• Implement QoS and traffic engineering for voice and data networks.
• Manage DNS/DHCP/IPAM platforms (Infoblox preferred).

Skills

Voice Transport

Cisco DC

VoIP

CUCM/CUBE/Unity/IM&P

SIP/VoIP protocols

Infoblox DNS/DHCP/IPAM

Tools

Cisco ACI

Cisco Nexus 9K/7K/5K

VXLAN/EVPN

BGP/OSPF/EIGRP/MPLS

vPC

Job description

Cantellat Software in Singapore seeks a Senior Network Engineer/Specialist to design, implement, and manage voice transport and data center networks worldwide. Lead SIP, CUCM/CUBE, and Cisco ACI/Nexus ecosystems to support manufacturing and corporate operations.

You will optimize QoS, routing, and DR readiness, coordinating multi-site deployments and WAN/Cloud integration. Strong certifications and 10–20+ years of relevant experience are expected.