Senior Network Engineer – Voice Transport & Cisco Data Center

Purview Asia Pacific; Singapore; On-site; SGD 110,000 - 190,000; Full time

Job summary

Purview Asia Pacific is seeking a Senior Network Engineer to design, implement, and optimize enterprise Voice/VoIP and data center networks in Singapore for global manufacturing, engineering and corporate environments.

You will lead multi-site Cisco ACI deployments, manage Nexus spine-leaf architectures and mentor junior engineers while collaborating with security teams and global stakeholders.

Qualifications

• At least 10+ years of enterprise network engineering experience.
• Hands-on experience with Cisco ACI, Nexus and data center networking.
• Strong expertise in VoIP, SIP, SBC, CUCM, CUBE and voice transport.
• Solid understanding of BGP, OSPF, EIGRP, MPLS, VRF, QoS and multicast.
• Experience with VXLAN, EVPN, vPC and spine-leaf architectures.
• Experience with Infoblox DNS/DHCP/IPAM is preferred.
• Experience supporting large-scale, multi-site enterprise networks; manufacturing/automotive experience is an advantage.
• Strong network architecture, documentation and troubleshooting skills.
• Ability to work across global teams and manage complex technical environments.

Responsibilities

• Design, deploy, and support enterprise Voice/VoIP infrastructure including SIP and gateways.
• Manage and optimize CUCM, CUBE, Unity and IM&P environments and dial plans.
• Design and operate Cisco ACI data center fabrics across multi-site environments.
• Manage Cisco Nexus 9K/7K/5K with vPC, VXLAN and EVPN architectures.
• Implement network segmentation, security policies, and high-availability solutions.
• Support data center migrations and new site deployments with compute/storage integration.
• Design and manage L2/L3 networks using BGP, OSPF, EIGRP, MPLS and VRF.
• Implement QoS, traffic engineering, and performance optimization.
• Manage DNS/DHCP/IPAM and leverage Infoblox when available.
• Produce HLD/LLD documents, diagrams, test plans and runbooks.
• Lead troubleshooting, incident management and continuous improvement.
• Collaborate with security teams on cybersecurity, governance and remediation.
• Work with global teams, vendors and stakeholders providing technical leadership and mentoring.

Skills

Cisco ACI

Cisco Nexus

Voice/VoIP

SIP & CUCM

BGP/OSPF/EIGRP

VXLAN/EVPN

VPC and Spine-Leaf

QoS & Traffic Engineering

DNS/DHCP/IPAM

Network Security & HA

Documentation & Diagrams

Mentoring & Leadership

Job description

We are looking for a Senior Network Engineer with strong expertise in Voice Transport, Cisco Data Center Networking, and Enterprise Network Engineering to support large-scale global manufacturing, engineering, and corporate environments.

The role will be responsible for designing, implementing, optimizing, and supporting highly available voice and data center network infrastructure, including Cisco ACI, Nexus, VoIP, SIP, CUCM, CUBE, routing, QoS, and enterprise network services.

Key Responsibilities

• Design, deploy, and support enterprise Voice/VoIP infrastructure, including SIP, RTP, SBCs, PRI gateways and Cisco Collaboration platforms.
• Manage and optimize Cisco CUCM, CUBE, Unity and IM&P environments, including dial plans, call routing, QoS and voice quality.
• Design and operate Cisco ACI data center fabrics, including multi-site/multi-pod environments.
• Manage Cisco Nexus 9K/7K/5K, vPC, VXLAN, EVPN and spine-leaf architectures.
• Implement network segmentation, micro-segmentation, security policies and high-availability solutions.
• Support data center migrations, new site/plant deployments and integration with compute and storage platforms.
• Design and manage enterprise L2/L3 networks using BGP, OSPF, EIGRP, MPLS and VRF.
• Implement QoS, traffic engineering, capacity planning and network performance optimization.
• Manage DNS/DHCP/IPAM, preferably using Infoblox.
• Develop HLD/LLD documents, network diagrams, test plans and operational runbooks.
• Lead troubleshooting, incident management, root-cause analysis and continuous improvement.
• Collaborate with security teams on cybersecurity, compliance, vulnerability remediation and governance requirements.
• Work with global technical teams, vendors and stakeholders and provide technical leadership and mentoring.

Required Skills & Experience

• Atleast 10+ years of enterprise network engineering experience.
• Strong hands-on experience with Cisco ACI, Cisco Nexus and Data Center networking.
• Strong expertise in VoIP, SIP, SBC, CUCM, CUBE and voice transport.
• Excellent understanding of BGP, OSPF, EIGRP, MPLS, VRF, QoS and multicast.
• Experience with VXLAN, EVPN, vPC and spine-leaf architectures.
• Experience with Infoblox DNS/DHCP/IPAM is preferred.
• Experience supporting large-scale, multi-site enterprise networks; manufacturing/automotive experience is an advantage.
• Strong network architecture, documentation and troubleshooting skills.
• Ability to work across global teams and manage complex technical environments.

Preferred Certifications

• CCNP / CCIE – Routing & Switching, Data Center or Collaboration
• Cisco ACI Specialist certification
• Cisco Collaboration / Voice certifications

Key Attributes

• Strong communication and stakeholder-management skills
• Excellent problem-solving and incident-management capabilities
• Ability to lead technical delivery and mentor engineersStrong vendor and cross-functional collaboration skills
• Ability to work effectively in a global enterprise environment