Senior Network Engineer (Lead)

Piper Companies is seeking a Senior Network Engineer (Lead) for a large-scale enterprise organization focused on modernizing and operating mission-critical network infrastructure. The Senior Network Engineer will lead architecture, deployment, and operations across routing, switching, security, SDN, and data center fabrics. This role is a long-term contract position and will be onsite in Newton, PA . This individual must have a public trust clearance.

Responsibilities for the Senior Network Engineer (Lead) include:

· Lead the design and optimization of enterprise L2/L3 networks across campus, data center, WAN, and cloud environments.

· Serve as the primary engineer for BGP, OSPF/IS-IS, MPLS/Segment Routing, EVPN/VXLAN, QoS, and Multicast.

· Architect and support ACI fabrics, including tenants, VRFs, contracts, and multi-pod/multi-site deployments.

· Engineer and maintain SD-WAN (Viptela) architecture, policies, and cloud on-ramps.

· Support security platforms including ISE (802.1X/SGTs), ASA/FTD/Firepower, Umbrella, Duo, and remote access VPN.

· Enhance observability using telemetry, NetFlow/IPFIX, and ThousandEyes.

· Lead lifecycle upgrades, migrations, and major incident response efforts.

· Collaborate with architects, SRE teams, security engineers, and cross-functional stakeholders.

· Maintain accurate network documentation including diagrams, standards, and configuration baselines., Keywords: network engineer, network, BGP, OSPF, IS-IS, MPLS, Segment routing, SR-MPLS, SRv6, EVPN, VXLAN, multicast, PIM, IGMP, QoS, L2 architecture, L3 architecture, LAN, WAN, campus networking, Cisco ACI, Nexus 9K, Nexus 7K, NX-OS, IOS-XE, IOS-XR, catalyst switching, viptela, ASA, firepower, umbrella, TrustSec, VPN, leaf-spine archiecture, Multi-pod, AWS, Azure, GCP, ExpressRoute, python, ansible, terraform, CI/CD, IaC, infrastructure as code, telemetry, network design, troubleshooting, collaboration, documentation

· 8+ years of enterprise or service provider network engineering experience, including leadership responsibilities.

· Deep expertise with BGP, OSPF/IS-IS, MPLS, Segment Routing, EVPN/VXLAN, and QoS.

· Hands-on experience with ACI and/or EVPN/VXLAN data center fabric technologies.

· Strong experience with SD-WAN (Viptela) and hybrid cloud connectivity.

· Background with ISE (AAA/802.1X/SGTs), next-gen firewalls (ASA/FTD), and remote access VPN.

· Proficiency with automation tools such as Python, Ansible, or Terraform.

· Experience with ThousandEyes or similar observability tools.

· Familiarity with AWS/Azure/GCP networking preferred.

· Strong communication skills and the ability to mentor junior engineers.

· CCNP required; CCIE strongly preferred.

· Salary range: $130,000 - $155,000

· Comprehensive benefits package including Medical, Dental, Vision, 401k, PTO, holidays, and sick leave as required by law.