Senior Network Engineer — Core Networking & MA & D

Cencora is an innovative company dedicated to creating healthier futures. They are seeking a Senior Network Engineer to serve as a technical leader responsible for the design, integration, and optimization of the company's backbone, data center, and cloud network environments, particularly in the context of mergers, acquisitions, and divestitures.

Responsibilities:

• Design and implement large-scale, highly available network solutions spanning backbone WAN, data center fabrics (spine/leaf, VXLAN/EVPN), and cloud environments (AWS, Azure, GCP)
• Own routing architecture across the enterprise — BGP, OSPF, IS-IS, MPLS, and segment routing — ensuring optimal path selection, convergence, and redundancy
• Perform advanced troubleshooting of complex Layer 2/3 issues, including root cause analysis across multi-vendor, multi-domain environments
• Manage capacity planning for backbone and data center interconnects; model growth scenarios and recommend upgrades to meet evolving business needs
• Evaluate and test emerging technologies — SD-WAN overlays, cloud-native networking (Transit Gateway, Azure vWAN), network automation/orchestration, and intent-based networking — for adoption into the core
• Document and maintain high-level and detailed network designs, including redundancy, failover, and disaster-recovery strategies
• Lead the network workstream for each MA&D event end-to-end — from due diligence through Day 1 cutover to steady-state hand-off
• Conduct technical discovery & assessments of target/divested company networks: inventory infrastructure, map IP address spaces, identify overlapping RFC 1918 ranges, catalog circuits, and evaluate security postures
• Develop integration blueprints that define how acquired networks will be absorbed into Cencora's backbone, data center, and cloud environments — including IP re-addressing/NAT strategies, DNS consolidation, routing policy merges, and identity/segmentation alignment
• Architect divestiture carve-out plans that cleanly separate shared network services, circuits, firewall policies, and cloud tenancies while maintaining operational continuity for both entities through the Transition Services Agreement (TSA) period
• Coordinate circuit provisioning and decommissioning — working with carriers, colocation providers, and cloud service providers to stand up or tear down connectivity on schedule
• Manage cutover execution — build detailed migration run-books, lead change windows, and orchestrate cross-functional war-room activities for Day 1 network transitions
• Mitigate risk by designing interim-state architectures (e.g., temporary VPN tunnels, NAT boundaries, shared firewalls) that allow phased integration or separation without disrupting production traffic
• Collaborate cross-functionally with Security, Systems/Server, Cloud, Application, and Identity teams to ensure seamless integration during both BAU operations and MA&D events
• Partner with Project Management and Corporate Development to align network milestones with broader deal timelines, budgets, and business commitments
• Develop and enforce network policies and standards, ensuring compliance with Cencora security and regulatory requirements (e.g., HIPAA, SOX)
• Mentor and guide Level 1 and Level 2 network engineers; serve as the technical escalation point for complex incidents
• Drive automation of repeatable MA&D tasks — templatized configurations, automated compliance checks, scripted IP migrations — to accelerate future integrations

Requirements:

• 7+ years in enterprise network engineering with significant time operating backbone, data center, and/or cloud network infrastructure
• Demonstrated participation in at least 2–3 network integration or carve-out projects (M&A, divestiture, or large-scale migration equivalents)
• Expert-level knowledge of BGP, OSPF, MPLS, VXLAN/EVPN, spanning-tree, and multicast in multi-vendor environments (Cisco, Arista, Juniper, Palo Alto, etc.)
• Hands-on experience with modern data center fabrics, interconnects (DCI), and colocation environments
• Working knowledge of at least one major cloud provider's networking stack (AWS VPC/TGW, Azure vNET/vWAN, GCP VPC)
• Experience with network automation tools and languages — Ansible, Terraform, Python, or equivalent
• Advanced certification preferred: CCNP/CCIE, Advanced Networking, or equivalent
• Strong leadership, project coordination, and communication skills; comfortable presenting to technical and non-technical stakeholders, including corporate development and executive leadership
• Experience in pharmaceutical distribution, healthcare, or other regulated industries
• Familiarity with Transition Services Agreements (TSAs) and the operational constraints they impose on network timelines
• Hands-on experience with network segmentation and zero-trust architectures in the context of integrating untrusted acquired environments
• Exposure to ITSM/change management frameworks (ITIL, ServiceNow) in large enterprise settings
• Working knowledge of network monitoring and observability platforms