Senior Network Systems Engineer

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.

Key Responsibilities

• 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.

Required Skills and Expertise

• 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 ExpressRoute, 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.

Qualifications

• Bachelor’s degree in Computer Science, Electrical/Computer Engineering, Information Systems, or equivalent practical experience.

• Minimum of 7 years of progressive experience in network engineering, architecture, and support.

• Minimum of 3 years hands-on experience with software-defined networking, Linux, and infrastructure as code methodologies.

• Certifications:

  • Cisco (CCNA/P), cross-platform automation and/or Linux certifications preferred but not required