We're hiring a Network Engineering Lead to own the design, evolution, and day-to-day operation of a multi-business production network. The environment spans ultra-low-latency trading paths, high-capacity and highly-redundant data movement, and connectivity to a wide range of external counter-parties across private and public networks.

This is an Individual Contributor role with tech-lead authority. You'll set technical direction, mentor a senior engineer reporting to you, and stay deeply hands-on with the gear. You'll work alongside a fully-staffed data center operations team that handles on-site work and tier-1 incident response — your focus is design, complex troubleshooting, and where the network goes next.

The network is brownfield: a working production fabric carrying real workloads. Your mandate is to take it to the next generation — tighter latency where it matters, more capacity and resilience where it matters, and a meaningfully better automation platform across the board.

GTS is a collection of financial services companies spanning a wide array of asset classes and investment approaches, all powered by the combination of market expertise with innovative, proprietary technology.  With roots as a quantitative trading firm continually building for the future, the GTS family of companies are able to leverage the latest in artificial intelligence systems and sophisticated pricing models to bring consistency, efficiency, and transparency to today’s financial markets. GTS’s electronic market maker GTS Securities accounts for 3-5% of daily cash equities volume in the U.S. and is a leading Designated Market Maker (DMM) at the New York Stock Exchange, responsible for nearly $13 trillion of market capitalization. For more information on GTS, please visit www.gtsx.com.

• 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. Move fast, root-cause, and write it up.
• 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. Routine, known-solution incidents are handled by support staff.

• 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.
• Working fluency with PTP and hardware timestamping; comfortable reasoning about clock distribution and time accuracy on the wire.
• 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.

Nice to Have

• Experience operating in a low-latency trading or financial-market-connectivity environment.
• Track record of evolving an existing automation platform — not just consuming one.
• Experience integrating AWS or Azure networking into a hybrid environment.
• Exposure to microwave / wireless low-latency links.
• Industry certifications (CCNP, CCIE, JNCIE, or equivalent) appreciated, not required.

In accordance with New York City's Pay Transparency Law, the base salary range for this role is $200,000 to $300,000. Base salary does not include other forms of compensation or benefits.

Benefits:

Core Benefits: Medical, Dental, and Vision coverage with generous employer contribution for employees and dependents. 401k match.

Perks: Daily Meal Allowance, Equinox Corporate Membership Rate, Snacks, Office Game Room, Casual Dress.

Hybrid Work Policy: 4 Days a Week in office, Fridays can be worked from home.