Senior Network Engineer
Senior Network Engineer building and supporting carrier interconnects, private circuits, NNIs, and cloud connectivity for a managed network services provider. Requires hands-on service provider experience with Layer 2/3 protocols and direct carrier coordination.
Key Responsibilities
- Design, configure, and support Layer 2 and Layer 3 network services including VLANs, QinQ, NNIs, MPLS, VRFs, BGP, OSPF, static routing, carrier Ethernet handoffs, and point-to-point circuits.
- Engineer and support carrier interconnects, NNIs, Ethernet transport, wavelength services, dark fiber handoffs, and IP transit from circuit delivery through turn-up testing and troubleshooting.
- Configure and support private cloud connectivity services including Azure ExpressRoute, covering BGP peering, VLAN tagging, routing policies, redundancy, and bandwidth profiles.
- Validate physical and logical handoffs during circuit turn-ups, including optics, cabling, MTU, VLAN mapping, BGP sessions, and route exchange.
- Support data center and colocation deployments including hardware staging, rack installation, cabling, optics, cross-connects, and vendor coordination.
- Serve as an escalation point for complex connectivity, routing, and transport issues across Layer 1, Layer 2, and Layer 3.
- Develop and maintain repeatable configuration templates, provisioning runbooks, and troubleshooting documentation.
- Collaborate with NOC, support, implementation, and sales engineering teams and participate in maintenance windows for network changes and circuit migrations.
Requirements
- Hands-on network engineering experience from a service provider, carrier, MSP, ISP, data center, or managed connectivity environment.
- Strong working knowledge of Layer 2 and Layer 3 networking including VLANs, QinQ, trunks, NNIs, BGP, MPLS, VRFs, routing policy, IP addressing, and carrier Ethernet.
- Demonstrated experience turning up and troubleshooting carrier circuits, cross-connects, and customer handoffs.
- Ability to read and produce network diagrams, port maps, IP plans, VLAN assignments, and circuit documentation.
- Comfortable working directly with carriers, data centers, and vendors through the full circuit lifecycle.
Nice to Have
- Experience with Azure ExpressRoute or similar private cloud interconnect services.
- Familiarity with MPLS L2VPN/L3VPN, EVPN, VPLS, or carrier Ethernet design patterns.
- Exposure to dark fiber, wavelength services, or optical transport concepts.
- Experience with network automation, scripting, or configuration templating.
- Certifications such as CCNA, CCNP, JNCIA, JNCIP, or MEF.
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