Senior Network Engineer Voice Transport & Cisco Data Center
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Summary
Senior network engineer designing and running voice transport and Cisco data center networking across global multi-site enterprise: SIP/SBC/VoIP and CUCM/CUBE collaboration platforms, Cisco ACI and Nexus fabrics, BGP/OSPF/MPLS routing, QoS, and Infoblox DNS/DHCP/IPAM, plus security, compliance, and documentation duties.
Key Responsibilities
Voice Transport & Unified Communications
- 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
Cisco Data Center
Network
ing
- 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
Enterprise
Network
Engineering
- 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
Security, Compliance & Governance
- 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
Required Skills & Experience
- 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
Preferred Certifications
- CCNP/CCIE (Routing & Switching, Data Center, Collaboration)
- Cisco ACI Specialist certifications
- Voice/UC certifications (Collaboration track)