Senior Network Engineer – Voice Transport & Cisco Data Center

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)