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Network Engineer

Job in Chicago, Cook County, Illinois, 60290, USA
Listing for: Nascent
Full Time position
Listed on 2026-09-16
Job specializations:
  • IT/Tech
    Network Engineer, Network Security, Systems Engineer
Salary/Wage Range or Industry Benchmark: 140000 - 210000 USD Yearly USD 140000.00 210000.00 YEAR
Job Description & How to Apply Below

Opportunity

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 elevate 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 experience with PTP (IEEE 1588) or comparable precision time synchronization.
  • Proficiency in Python for network automation, configuration management, or operational tooling.
  • Hands-on firewall configuration and management (Cisco ASA, Palo Alto, or equivalent).
  • Packet capture and protocol-level troubleshooting (tcpdump, Wireshark).
  • Nice to have: CCNP/CCIE with practical work behind it;
    IaC for network config (Ansible, Terraform); hybrid-cloud connectivity (AWS Direct Connect, Azure Express Route); DPDK or kernel-bypass exposure.
About Nascent

Founded in 2020, Nascent exists to build, expand, and capture opportunity, in open markets and permissionless technologies. Building from a base of permanent capital, we deploy assets across a range of both liquid and…

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