Network Engineering Lead - New York, NY

Responsibilities

• Own end-to-end network design and evolution — from layer-1 optics through routing, segmentation, and overlays.
• Operate a heterogeneous fabric: ultra-low-latency trading paths alongside redundant, high-bandwidth data planes and multi-tenant connectivity.
• Take our network automation to the next level.
• Drive the move toward a clean source of truth, CI/CD for network configuration, automated validation, and tooling your team will actually want to use.
• Manage and grow connectivity to exchanges, brokers, market-data providers, and other counter-parties — across proximity-hosted, colocated, and private/public network paths.
• Design and operate firewalls and segmentation across multiple security zones.
• Lead complex troubleshooting. Issues that escalate past tier-1 support land with you.
• Set technical direction for the network: own the architecture roadmap, run design reviews, drive postmortems, and partner on hiring as the team grows.
• Mentor a senior engineer reporting to you.
• Raise the bar on review quality, change discipline, and engineering practices.
• Share a 24/7 on-call rotation with your direct report.

Qualifications

• 10+ years operating production network infrastructure in environments where uptime and performance are first-order concerns.
• Strong end-to-end understanding of how networks actually work — every layer, not just the ones you touch most often.
• Deep hands-on experience with Arista and Cisco switching and routing platforms.
• Fluency with the protocols this environment runs on: BGP, OSPF, PIM-SM and IP multicast, VLAN, VXLAN, IPSec.
• Experience operating modern data-center fabrics — spine-leaf topologies and EVPN-VXLAN overlays.
• Solid grasp of firewall architecture, configuration, and troubleshooting.
• Strong network design instincts — you know when to optimize for latency, when for capacity, when for redundancy, and how to make those trade-offs explicit and defensible.
• Fast, structured troubleshooting under pressure.
• Fluent with packet capture (PCAP), sFlow / streaming telemetry, and capture appliances (Corvil-style); able to reason from layer-1 first principles.
• Network automation experience (Python, Ansible, or equivalent) and the appetite to design and build the next generation — including source-of-truth tooling (NetBox or similar) and CI for network configuration.
• Working knowledge of the network-adjacent hardware stack: fiber, transceivers (SFP/QSFP), DWDM, muxes, and layer-1 switching.