Senior Network Systems Engineer

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As a Senior Network Engineer
, you participate in the implementation, and support of complex hybrid network infrastructures across global environments. This role demands a strategic mindset and deep technical expertise to deliver high-impact projects that align with enterprise security standards, performance optimization goals, and scalability requirements. You will help define and drive the evolution of IQVIA’s global network ecosystem transforming it into a programmable, automated, and platform-agnostic infrastructure.

You will be responsible for planning, deploying, documenting, and maintaining both new (SoNIC, Cumulus) and existing (Cisco) network architectures in highly dynamic and secure environments. A strong understanding of Linux-based systems, network programmability and infrastructure-as-code principles will be essential as you help build a globally consistent and scalable network foundation.

• Support SDN solutions, focusing on Cisco ACI across multiple data centers.
• Integrate AI-driven network monitoring and predictive analytics.
• Serve as a senior technical advisor to Tier 2 engineers, providing mentorship and consultation.
• Provide expert-level support during major incidents, including root cause analysis and resolution planning.
• Translate Global Network Support (GNS) standards into actionable low-level designs, including hardware quoting and documentation.
• Partner with Mergers & Acquisitions (M&A) and Global Real Estate teams to integrate new acquisitions into IQVIA’s network standards.
• Lead network buildouts, office restack implementations, and refresh initiatives.
• Lead strategic network projects across departments, regions, and time zones.
• Automate implementations across platforms:
  • Generate and deploy F5 configurations, Palo Alto firewall rules, and Cisco ACI policies through Ansible, Python, Terraform, and/or API-driven automation.
  • Implement CI/CD pipelines to validate and roll out network and security changes safely and repeatably.
• Implement and support network segmentation strategies for zero-trust architectures and compliance mandates.
• Oversee incident response and escalation workflows, ensuring timely resolution and stakeholder communication.
• Maintain DNS (BIND), IPAM, and domain name services across enterprise environments with automation-first principles.
• Support branch office automation initiatives using Cisco DNA Center and other vendor platforms.

• Extensive experience with software-defined networking technologies (Cisco ACI, SoNIC, Cumulus Linux, or equivalent), including the ability to:
  • Deploy Cisco ACI fabric including spine-leaf topology, APIC controllers, and policy-based configurations.
  • Configure multi-pod and multi-site Cisco ACI environments for scalability and redundancy.
  • Implement L4–L7 service insertion using service graphs and contracts.
• In-depth understanding of Linux networking, kernel-based switching, and open-source routing stacks (FRR, BIRD, and Quagga).
• Proven experience developing and deploying infrastructure-as-code for network and security platforms (Ansible, Terraform, Git, YAML, JSON).
• Experience automating configurations and policy enforcement across:
  • Cisco ACI and DNA Center
  • F5 load balancers (iControl REST, AS3 templates)
  • Palo Alto firewalls and Panorama (REST and XML APIs)
• Proficiency in routing and overlay technologies (BGP, EIGRP, VXLAN/EVPN, OSPF, etc) and switching.
• Experience in SDWAN deployments and support.
• Understanding of network segmentation, zero-trust access, and security frameworks.
• Familiarity with cloud networking platforms including AWS Direct Connect, Azure Express Route, and hybrid/on-prem cloud solutions.
• Experience with packet capture analysis, network monitoring, performance tuning, and capacity planning.
• Strong organizational and communication skills, with the ability to manage multiple priorities and stakeholders.
• Ability to foster effective working relationships across global teams and drive consensus in complex environments.

• Bachelor’s degree in Computer Science, Electrical/Computer Engineering, Information Systems, or…