Senior Network Engineer: Voice Transport & Cisco Data Center

Infrasoft Technologies Limited

Singapore

On-site

SGD 180,000 - 240,000

Full time

3 days ago

Be an early applicant

Application generator

Stand out for this role — generate a tailored resume and cover letter in about a minute.

Get past ATS filters

Job summary

Infrasoft Technologies Limited is seeking a seasoned Enterprise Network Engineer with extensive experience in voice transport and Cisco data center architectures. The role covers design, deployment, and optimization across global sites, including CUCM/CUBE/Unity and advanced routing.

You will shape security policies, ensure high availability, and lead multi-site DC fabric initiatives. Candidates should have 10+ years in enterprise networks, strong Cisco ACI/Nexus expertise, and a track record of

Qualifications

10–20+ years in enterprise network engineering with focus on voice transport and Cisco DC
Hands-on expertise with Cisco ACI, Nexus platforms, and DC fabric technologies
Strong experience with VoIP, SIP, SBCs, CUCM, CUBE, and voice quality optimization
Deep understanding of routing protocols, QoS, multicast, and network performance engineering
Experience with Infoblox DNS/DHCP/IPAM
Proven experience supporting large-scale, multi-site enterprise networks (manufacturing/automotive preferred)
Strong documentation and architecture skills

Responsibilities

Design, deploy, and support Voice Transport systems including SIP, RTP, SBCs, PRI gateways, and VoIP infrastructure across global sites
Manage and optimize Cisco Collaboration platforms (CUCM, CUBE, Unity, IM&P)
Maintain dial plans, call routing, QoS policies, codec strategies, and voice quality SLAs
Integrate voice systems with WAN, SD-WAN, MPLS, and cloud telephony platforms
Conduct voice traffic analysis, capacity planning, and performance tuning
Architect and operate Cisco ACI fabrics, including multi-pod/multi-site deployments
Manage Cisco Nexus platforms (9K/7K/5K), vPC, VXLAN, EVPN, and spine-leaf architectures
Implement segmentation, micro-segmentation, and security policies
Support DC migrations, new plant deployments, and compute/storage integration
Ensure high availability, redundancy, and disaster recovery readiness
Lead L2/L3 network design using BGP, OSPF, EIGRP, MPLS, VRF, and advanced routing policies
Implement QoS, traffic engineering, and performance optimization
Manage DNS/DHCP/IPAM platforms (Infoblox preferred)
Develop HLD/LLD, network diagrams, test plans, and operational runbooks
Drive incident resolution, root-cause analysis, and continuous improvement
Apply cybersecurity standards across voice and DC environments (ACLs, segmentation, encryption)
Collaborate with security teams on audits, compliance checks, and vulnerability remediation
Ensure designs comply with global IT policies and regulatory frameworks