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Lead Network Reliability Engineer

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  • Role overview
  • Who are we looking for
  • Our benefits
  • The process
  • Why apply
  • Meet our people
  • Interview process
  • Infrastructure Engineering
  • London

We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.

From our London HQ, we unite world-class 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.

Take the next step in your career.

The role

G-Research is looking for an experienced Network Engineer to take a hands-on technical leadership role driving the reliability, performance, resilience, and security of our network and network security infrastructure across datacentre and office environments.

Using SRE practices, automation, and observability, you'll apply an engineering-led approach to operations — reducing toil, improving visibility, accelerating incident response, and eliminating recurring issues. You'll combine deep technical expertise with cross-team influence to shape and mature networking processes, drive operational excellence, and continuously improve the resilience and scalability of our network services.

Key responsibilities:

  • Build and evolve SRE practices for the network, championing an automation-first approach using tooling, observability, and emerging technologies (including agentic AI)

  • Own the operational performance, stability, availability, and security posture of network and network security platforms end to end

  • Enhance observability across telemetry, alerting, and performance monitoring to enable proactive operations

  • Develop our event-driven network architecture built on Infrastructure as Code principles

  • Lead the charge on critical network and security incidents: fast diagnosis, decisive containment, and permanent fixes that stop issues coming back - then dig into the root cause to engineer out systemic, recurring problems

  • Develop and refine operational tooling, runbooks, and incident response frameworks that raise the bar on service delivery

Who are we looking for?

The ideal candidate will have the following experience:

  • Strong background as a networks technical lead in enterprise or large-scale environments

  • Experience applying SRE, observability, and automation principles to networking, using technologies such as Python, Prometheus, Grafana, OpenTelemetry, Ansible, Jenkins

  • Experience with Cisco and Arista switching and routing, alongside network security infrastructure (e.g. firewalls, IDS/IPS, network segmentation)

  • Experience with, or a strong interest in, event-driven automation and AI-assisted operations, including the use of emerging technologies to improve diagnostics, remediation and operational efficiency

  • Strong communication and collaboration skills

Why should you apply?

  • 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

Relocation Support

If you're relocating from within the UK or internationally to join us in London, we offer a comprehensive range of support services to assist you all the way. Costs associated with your relocation and immigration are covered by G-Research.

  • Concierge service: Your personal consultant will arrange travel, help find your new home and manage your move. They're also on hand to help with more bespoke requests too.

  • Immigration support: We'll partner you with an expert consultant who will guide you through the immigration process.
Location: London
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Mario FPGA Manager

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What our people say

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Mia Software Engineer

"What I appreciate most about working in G-Research is the supportive and knowledgeable environment. Everyone is incredibly helpful and patient, which ensures there’s a good balance between being challenged and your workload."

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Neil Corporate IT Manager

"My favourite part of working for G-Research is that technology is at the heart of everything we do at the company, driving the business forward and enabling us to stay ahead of the competition."

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Ross Cloud Engineering Manager

"My favourite thing about working here is the people. G-Research strives to hire not only the brightest minds, but good people, which in turn creates a brilliant collegiate and social atmosphere at the company."

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Josh Quantitative Research Intern

""I was surprised by how much access I had to G-Research’s compute. I was able to run a significant number of jobs on the compute farm, similar to a full-time researcher, which gave me the freedom to explore different ideas through experimentation.""

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Tisya Research Engineering Intern

"What’s stood out is how much ownership I’ve had without ever feeling like I was on my own. I’ve been treated as part of the team, with people always happy to answer questions, discuss ideas or help when I need it."

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Henry FPGA Engineering Intern

"Sitting alongside experienced engineers means I can ask questions, discuss ideas and learn from how they approach their work."

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Olivia Cyber Security First Response Intern

"I had the autonomy to lead mini-projects, contribute to ongoing investigations and shape the outcome of technical workstreams."

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Samira Software Engineering Intern

"It’s nice to work on something useful, rather than just an intern project. I’ve had feedback from people saying they’ll use the app regularly, which is great to hear."

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Joseph Data Analyst Intern

"The dashboards I’ve created are already being used and having a tangible impact, which I’ve found really rewarding."

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Abdullah Software Engineering Intern

"G-Research gave me a unique experience where I'm surrounded by both very talented and very approachable people and where my contributions are impactful."

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Interview process

Online Application

Our assessment process kicks off with our Talent Acquisition team, who will review your application and assess your fit for the role.

Stage One: Technical Interview

You will meet with a team member – or take a remote test – where your technical abilities will be put to the test.

Stage Two: Behavioural Interview

We will set aside technical skills and focus on you.

Stage Three: Further Technical Interviews

Here, we will take a deeper dive into your technical skills and competencies.

Stage Four: Management Interviews

The final stage of our interview process is where you will meet members of your team, your future manager, and functional leadership.

Lead Network Reliability Engineer Apply now

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Our Benefits

Our benefits are designed with our people in mind, with a wide range of flexible options tailored to your needs.

Finance
  • Company pension scheme
  • Annual discretionary bonus scheme
  • Season ticket loan
  • Give as you Earn (GAYE)
  • Risk protection benefits
  • Charity fundraising matching scheme
  • Generous relocation and immigration assistance
Health
  • Comprehensive private health insurance, including GP access, dental and vision
  • Enhanced health support for male and female health, fertility, family forming, maternity and menopause journeys
  • Healthcare cash plan covering a wide range of routine and complimentary healthcare expenses
  • Employee Assistance and Wellness Programmes
Lifestyle
  • 30 days’ annual leave, with an extra five days for those who are office based
  • Enhanced leave polices to support our people and their family needs
  • Back-up dependent care for children, adults and pets
  • Complimentary travel insurance for our people and their families
  • Cycle schemes
  • Gym and Fitness membership subsidies
  • Free lunch and complimentary barista bar
  • Regular company socials
  • Informal dress code and excellent work-life balance
  • Talks from world-class guest speakers
We want benefits to work for our people and use a flexible benefits platform to support this – colleagues can opt-in or out of certain benefits and can customise cover levels depending on their lifestyle and personal needs.