Lead network engineer

Key Responsibilities

Infrastructure Ownership and Architecture

Own the complete lifecycle of trading infrastructure including design, deployment, optimization, and operations Architect scalable, resilient, and deterministic infrastructure for latency-sensitive trading workloads Ensure high availability, performance consistency, and fault tolerance across environments

Network Engineering

Design and manage ultra-low latency network architectures using L2 and L3 protocols Deep expertise in multicast, PTP, GPS clocking, time synchronization, and timestamping Manage exchange connectivity, market data feeds, cross-connects, and order entry paths Optimize switches, NICs, and network paths for microsecond and nanosecond-level performance

Data Centre and Colocation Management

Own exchange colocation strategy across multiple markets and venues Manage rack design, cabling standards, power planning, cooling, and space utilization Coordinate installations, audits, and upgrades with exchanges and colocation providers Oversee dark fiber, metro links, and third-party connectivity providers

Linux and Systems Engineering

Build and maintain high-performance Linux environments for trading and market data systems Perform kernel tuning, CPU isolation, NUMA optimization, IRQ tuning, and real-time performance enhancements Ensure OS level stability, security, and performance best practices

Hardware and Connectivity

Own selection and validation of servers, NICs, switches, and low-latency hardware components Manage firmware, BIOS, and driver configurations for optimal performance Oversee hardware procurement, deployment, lifecycle management, and decommissioning Ensure optimal physical connectivity and cabling standards within data centres

Operations and Reliability

Define monitoring, alerting, and incident response frameworks Lead root cause analysis for outages, latency spikes, or performance degradation Establish robust change management and operational best practices Ensure infrastructure meets security and compliance requirements

Leadership and Collaboration

Lead, mentor, and scale a team of network, infrastructure, and systems engineers Partner closely with trading, quant, and development teams to meet performance objectives Drive long term infrastructure strategy aligned with trading and business growth Manage vendor relationships and negotiate with hardware, exchange, and service providers

Required Skills and Experience

5+ years of experience in infrastructure roles within HFT, prop trading, or latency-critical environments Deep hands-on expertise in low-latency networking and Linux performance tuning Strong experience with exchange colocation setups and market connectivity Proven leadership experience managing mission-critical infrastructure teams Exceptional troubleshooting and decision-making skills under pressure

Preferred Qualifications

Prior experience in a leading HFT or proprietary trading firm Exposure to FPGA-based trading or market data systems Experience with automation, scripting, or infrastructure as code Strong understanding of trading infrastructure security and compliance