Sr. L4 Network Engineer/Architect*
About the role
Join a team supporting one of the largest and most complex enterprise network transformations in the country. This contract opportunity is ideal for a Senior L4 Network Engineer / Architect with deep expertise in Cisco SD-WAN, enterprise WAN architecture, MPLS, and routing. You'll lead the design and implementation of resilient SD-WAN solutions that span MPLS, Internet, broadband, LTE/5G, and hybrid WAN environments while working with cutting-edge Cisco networking technologies.
This is more than an implementation role—it's an opportunity to serve as the technical authority for Cisco SD-WAN architecture. You'll drive design decisions, mentor engineering teams, collaborate with carriers and stakeholders, and help shape the future of a large-scale enterprise network. If you enjoy solving complex networking challenges, leading high-impact projects, and working across both the logical and physical layers of modern networking, this role offers the chance to make a significant impact while working alongside senior engineering talent.
Contract Duration: 1 Year + extensions
Responsibilities
- Lead the design, deployment, and operational support of Cisco SD-WAN solutions across complex enterprise environments.
- Define SD-WAN overlays, develop routing and segmentation strategies, and integrate WAN edge devices with LAN, firewall, cloud, and data center environments.
- Support high-risk migrations and cutovers, troubleshoot production issues, and collaborate with carriers and cross-functional engineering teams.
- Produce high-quality technical documentation and serve as the senior escalation point for complex networking challenges.
- Establish design standards, mentor engineering teams, and ensure network solutions are resilient, scalable, and aligned with business and operational requirements.
Tech Breakdown:
- 40% Cisco SD-WAN Architecture & Design
- 30% Enterprise Routing, MPLS & WAN Engineering
- 20% Network Integration, Troubleshooting & Performance
- 10% Documentation, Technical Leadership & Standards
Daily Responsibilities:
- 75% Hands-On Engineering
- 10% Technical Leadership & Design Reviews
- 15% Team Collaboration
Requirements
Required Skills & Experience
- 10+ years of enterprise or service provider network engineering experience
- Strong hands-on experience designing, deploying, and supporting Cisco SD-WAN solutions
- Deep understanding of Cisco SD-WAN architecture including vManage, vBond, vSmart, WAN Edge routers, templates, and centralized policies
- Experience designing enterprise WAN solutions across MPLS, Internet, broadband, LTE/5G, and hybrid WAN environments
- Advanced routing expertise with BGP, OSPF, IS-IS, EIGRP, VRFs, route redistribution, and policy-based routing
- Working knowledge of MPLS services including L3VPN, L2VPN, QoS, and carrier handoff models
- Experience with Cisco Catalyst 8000/8500, ISR, ASR, or similar WAN edge platforms
- Strong understanding of WAN/LAN integration, fiber handoffs, carrier demarcation, and firewall connectivity
- Experience troubleshooting across routing, SD-WAN overlays, QoS, physical connectivity, and application performance
- Excellent documentation, communication, and technical leadership skills
Desired Skills & Experience
- CCIE Enterprise Infrastructure, CCIE Service Provider, CCNP Enterprise, or equivalent certification
- Experience with Cisco SD-WAN segmentation, application-aware routing, and large-scale deployments
- Experience integrating SD-WAN with cloud, data centers, SASE, and enterprise security platforms
- Experience with DWDM, dark fiber, carrier Ethernet, and optical transport
- Experience with ThousandEyes, SolarWinds, LogicMonitor, NetFlow, or similar monitoring platforms
- Experience with Ansible, Python, REST APIs, Git, or Infrastructure as Code
- Experience supporting mission-critical production environments
- Experience working directly with carriers, vendors, and field engineering teams