Low Latency Network Engineer

Barlowe LLP; Greater London; On-site; GBP 90,000 - 125,000; Full time

Benefits offered by this job

Lunch provided

Barista bar

Healthcare

30 days’ annual leave

Company pension

Job summary

G-Research is seeking a highly skilled low latency network engineer to join the Colo Infrastructure team in London. You will design scalable co-location network solutions and push for ultrafast performance across the platform.

Responsibilities include latency optimization, automation development, and on-call incident support to ensure reliability. A strong background in timing, packet capture, and WAN connectivity is required.

Qualifications

• Experience in designing and delivering highly available networks for latency-sensitive platforms.
• Strong background in low-latency networking and timing technologies (GPS, PTP, NTP).
• Experience with packet capture/analysis and optical taps for diagnostics.
• Familiarity with WAN options focused on diversity and latency reduction.
• Ability to build automation for infrastructure using Git, Python, Jenkins, Ansible.
• Knowledge of multicast configuration and troubleshooting in COLO environments.
• Comfort with on-call incident response and production reliability.

Responsibilities

• Design and build co-location network solutions to support the platform.
• Optimize performance, latency and throughput of the infrastructure.
• Lifecycle management and monitoring of Colo Network environment.
• Develop automation and operators to extend the infrastructure.
• Collaborate with platform and development teams to standardize practices.
• Contribute to incident response and production reliability.
• Handle on-call responsibilities for critical infrastructure components.

Skills

Low latency networking

Network design

Timing systems

Packet capture & analysis

WAN connectivity

Multicast configuration

Automation tooling

On-call reliability

Linux system exposure

Tools

Git

Python

Jenkins

Ansible

Job description

Overview

We tackle the most complex problems in quantitative finance by bringing scientific clarity to financial complexity. From our London HQ, we unite top researchers and engineers in an environment that values deep exploration and methodical execution — because the best ideas take time to evolve. Together we’re building a world-class platform to amplify our teams’ most powerful ideas. As part of our engineering team, you’ll shape the platforms and tools that drive high-impact research — designing systems that scale, accelerate discovery and support innovation across the firm. The role G-Research is going through an exciting period of growth in our co-location and low-latency platform. We are looking for a highly skilled low latency network engineer to join our Colo Infrastructure team.

Responsibilities

• Designing and building new co-location network solutions to meet the needs of the platform
• Optimise the performance, latency and throughput of the infrastructure
• Lifecycle management and monitoring of Colo Network environment
• Developing automation and operators to build and extend the infrastructure
• Working with other platform and development teams to help define standards, best practices and onboard new capabilities onto the platform
• Contributing to incident response and production reliability
• On-call responsibilities for the most critical parts of the infrastructure

Qualifications

• Designing and building highly available, mission critical networks
• Optimising low latency networks (including layer 1 switching, RF, LEO, dark fibre), timing solutions (using GPS, PTP, PPS, White Rabbit and NTP)
• Building packet capture and analysis solutions (including optical taps, SPAN, tap aggregation and timestamping)
• Running product evaluation and testing
• Building networks and market connectivity in exchange collocations
• Evaluating WAN connectivity options for optimal diversity and latency
• Multicast configuration and troubleshooting
• In-depth understanding of automation tools, including Git, Python, Jenkins and Ansible

Why join us?

Highly competitive compensation plus annual discretionary bonus; Lunch provided (via Just Eat for Business) and dedicated barista bar; 30 days’ annual leave; 9% company pension contributions; Informal dress code and excellent work/life balance; Comprehensive healthcare and life assurance; Cycle-to-work scheme; Monthly company events.

EEO / Inclusion

G-Research is committed to cultivating and preserving an inclusive work environment. We are an ideas-driven business and we place great value on diversity of experience and opinions. We want to ensure that applicants receive a recruitment experience that enables them to perform at their best. If you have a disability or special need that requires accommodation please let us know in the relevant section.

About

At G-Research, we are passionate about the intersection of finance, technology, and the future. We offer a dynamic, flexible and highly stimulating culture where world-beating ideas are cultivated and rewarded. We are proud to employ some of the best people in their field and to nurture their talent in our collaborative working environment.