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
This is an exciting opportunity to shape and mature operational processes through automation and observability. You will own the reliability, performance, and security of the organisation’s network and security infrastructure across datacentre and office environments.
This is a hands-on technical leadership role focused on operational excellence, automation, observability, and incident response — ensuring high availability, resilience, and a strong security posture.
Key responsibilities:
Own the day-to-day performance, stability, availability, and security of network platforms across datacentre, WAN, and campus environments
Lead response to critical incidents, driving rapid diagnosis, containment, and long-term remediation
Champion an automation-first approach, reducing operational toil through tooling, observability, and emerging technologies (including agentic AI)
Develop and refine operational tooling, runbooks, and incident response frameworks to ensure consistent, high-quality service delivery
Support an event-driven network architecture aligned with Infrastructure as Code principles
Enhance observability across telemetry, alerting, and performance monitoring to enable proactive operations
Partner with Network and Security Engineering to ensure new designs meet operational, performance, and security standards
Drive continuous improvement initiatives focused on efficiency, reliability, and scalability
Identify systemic issues through incident analysis and implement structural, long-term fixes
Support capacity planning, performance optimisation, and operational readiness for changes and upgrades
Who are we looking for?
The ideal candidate will have the following experience:
Strong hands-on experience in networking operations within enterprise or large-scale environments (datacentre, WAN, campus)
Proven experience operating network security infrastructure (firewalls, load balancers, proxies, TACACS)
Solid understanding of switching and routing (Cisco/Arista, L2/L3) and routing protocols (BGP, EVPN-VXLAN)
Good knowledge of modern network security principles (e.g. zero trust, micro-segmentation)
Experience managing physical network circuits and vendor relationships
Familiarity with automation and CI/CD tooling (e.g. Ansible, Python, Jenkins) and Infrastructure as Code
Experience with observability and monitoring tools (e.g. Prometheus, Grafana, OpenTelemetry, ELK)
Strong ability to analyse and troubleshoot distributed systems end-to-end
Proactive, self-starting mindset with a strong sense of ownership
Comfortable engaging with stakeholders across infrastructure and application teams
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
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
Skills Required
- Strong hands-on experience in networking operations within enterprise or large-scale environments
- Proven experience operating network security infrastructure (firewalls, load balancers, proxies, TACACS)
- Solid understanding of switching and routing (Cisco/Arista, L2/L3) and routing protocols (BGP, EVPN-VXLAN)
- Good knowledge of modern network security principles (e.g. zero trust, micro-segmentation)
- Experience managing physical network circuits and vendor relationships
- Familiarity with automation and CI/CD tooling (e.g. Ansible, Python, Jenkins) and Infrastructure as Code
- Experience with observability and monitoring tools (e.g. Prometheus, Grafana, OpenTelemetry, ELK)
- Strong ability to analyse and troubleshoot distributed systems end-to-end
- Proactive, self-starting mindset with a strong sense of ownership
- Comfortable engaging with stakeholders across infrastructure and application teams
What We Do
G-Research is a leading quantitative research and technology firm, with offices in London and Dallas. We hire the brightest minds in the world to tackle some of the biggest questions in finance. We pair this expertise with machine learning, big data, and some of the most advanced technology available to predict movements in financial markets. We take pride in our dynamic, flexible and highly stimulating culture where world-beating ideas are prized and rewarded. We employ some of the best people in their field and are keen to nurture their talent in a supportive working environment.
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