Network Engineer at Nascent

The Opportunity You'll own the network infrastructure that connects Nascent's trading systems to exchanges, colocations, and internal platforms — the physical and logical fabric that every microsecond of execution depends on. This is a hands-on build-and-operate role: you'll design low-latency network topologies, manage colocation cross-connects and exchange connectivity, maintain precision time synchronization, and keep firewall and routing policy tight. You'll work alongside systems engineers, SREs, and quant infrastructure teams who treat deterministic performance as a first-class engineering discipline. This isn't a ticket-queue seat inside a large NOC. You'll be one of two network engineers with direct ownership over architecture decisions, vendor relationships, and the tooling you build to monitor and automate the stack — designing connectivity from scratch, not just maintaining what someone else built. The problems are real: packet captures at the switch port, PTP drift investigations, firewall policy reviews that directly affect trade flow — and you'll have the autonomy to solve them end to end. This position must be geographically located within +/- 3 hours EST. Responsibilities Own colocation connectivity: cross-connects, exchange feeds, and carrier relationships across production colo facilities. Design and maintain low-latency L2/L3 network topologies for trading infrastructure. Configure, troubleshoot, and optimize BGP and OSPF routing in production. Maintain precision time synchronization (PTP / IEEE 1588) across trading and infrastructure systems. Manage firewall policy (Cisco ASA, Palo Alto, or equivalent) — changes that directly affect production traffic paths. Write Python tooling for network automation, configuration management, and operational monitoring. Perform packet capture and protocol-level troubleshooting (tcpdump, Wireshark). Build and maintain runbooks, network diagrams, and infrastructure documentation. Participate in the on-call rotation and own incidents end to end, from triage through post-mortem. About you You've worked in latency-sensitive, colocation, or trading environments — you understand why microseconds matter and how network decisions land on execution. You design infrastructure from scratch rather than only operating what someone else built. You script your way out of repetitive work; automation is instinct, not an afterthought. You own incidents end to end — you don't escalate and wait, you dig in until it's resolved. You're comfortable as one of two network engineers: small team, real ownership, nowhere to hide. You treat on-call as part of the craft, not an imposition. You translate network decisions into language systems engineers, SREs, and quant teams can act on. Preferred experience 3+ years hands-on with L2/L3 networking in latency-sensitive, colocation, or trading environments. Strong working knowledge of BGP and OSPF — configuration, troubleshooting, and design in production. Production experie