Lead Network Operations Engineer

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 were building a world-class platform to amplify our teams most powerful ideas.

As part of our engineering team youll 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 organisations 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