Low Latency Infrastructure Engineering, Equities Trading, Director

## Low Latency Infrastructure Engineering, Equities Trading, Director Apply remote type:
Hybrid locations:
Jersey City New Jersey United Statestime type:
Full time posted on:
Posted Todaytime left to apply:
End Date:
August 8, 2026 (30+ days left to apply) job requisition :

** Role Overview:
** Citi Equities Technology is seeking a senior leader for its low-latency infrastructure engineering group. The person in this role will be responsible for design, architecture & delivery of Citi’s trading infrastructure across colocation sites and strategic data center assets.

This role requires a combination of deep technical expertise in low latency infrastructure and networking systems, trading microstructure knowledge and strong leadership and execution capabilities. The successful candidate will lead a global engineering team to deliver platform infrastructure in close partnership with the software delivery teams, Citi’s enterprise technology group and trading functions.
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* Key Responsibilities:

*** Define and execute the strategic roadmap for low latency trading infrastructure across Global Equity Markets.
* Architect and deliver high performance colocation environments, connecting exchange venues, market data providers, and internal trading systems.
* Lead design and implementation of ultra-low latency Layer 1/Layer 2 network infrastructure between exchange colocation facilities and Citi data centers.
* Drive selection, evaluation, and deployment of cutting-edge low latency switching, routing, timing, and telemetry technologies.
* Work with vendors partners, exchange providers, telecom carriers, and hardware manufacturers to optimize connectivity, resiliency, and performance.
* Design resilient cross-connect and market access strategies across global exchanges and liquidity venues.
* Establish standards for low latency Linux infrastructure, including Operating System optimization, kernel bypass technologies, CPU isolation, NUMA optimization, interrupt tuning, and deterministic performance engineering.
* Lead engineering teams responsible for infrastructure provisioning, bare-metal automation, deployment pipelines, hardware lifecycle management, and production engineering.
* Develop scalable operational models enabling rapid deployment of trading infrastructure, including procurement workflows, capacity management, rack design, and colocation expansion.
* Build highly secure and compliant environments aligned with Citi operational, cyber, and regulatory requirements.
* Collaborate with application engineering teams to optimize end-to-end trading latency and infrastructure determinism.
* Drive observability, performance benchmarking, packet capture analysis, and latency telemetry across the trading stack.
* Manage relationships with exchanges, telcos, connectivity providers, and colocation operators globally.
* Lead incident management and infrastructure resiliency programs for mission-critical trading environments.
* Mentor and develop senior engineers and technical leads across infrastructure and platform engineering disciplines.
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* Required Qualifications:

*** 15+ years of experience in low latency infrastructure engineering within electronic trading, capital markets, hedge funds, trading venues or equivalent financial institutions.
* Proven experience building and operating exchange colocation environments for Equities or multi-asset electronic trading platforms.
* Deep expertise in low latency network design, including:
* Arista, Cisco, Juniper, or equivalent ultra-low latency switching platforms
* Layer 1 optimization
* Multicast market data distribution
* Precision timing/PTP
* Optical transport and cross-connect architecture
* Exchange connectivity design
* Strong understanding of modern low latency hardware platforms, NICs, FPGA-enabled environments, and packet processing optimization.
* Advanced Linux systems engineering expertise, particularly:
* RHEL & Kernel tuning
* CPU pinning and isolation
* IRQ balancing
* NUMA optimization
* DPDK/XDP/kernel bypass technologies
* Deterministic systems performance tuning
* Experience designing resilient infrastructure across colocation facilities and large-scale enterprise data centers.
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