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)