Senior Network Engineer – Voice Transport & Cisco Data Center

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 engineers Strong vendor and cross-functional collaboration skills Ability to work effectively in a global enterprise environment