Network Engineer

We're looking for an experienced Network Engineer who's passionate about building and maintaining high-performance, scalable and resilient network infrastructure.

You'll be part of a team that designs, automates and supports a global environment, which underpins cutting-edge research and technology operations and drives the success of G-Research., * Designing, implementing and maintaining enterprise-grade data centre networks using Cisco and Arista technologies

• Taking ownership of complex troubleshooting and break/fix efforts, resolving issues across routing, switching, firewalls and WAN infrastructure
• Automating and optimising network operations using Git, Ansible, Python and Jinja2
• Deploying and managing WAN edge infrastructure, with exposure to MPLS and Segment Routing considered a plus
• Championing network security, implementing best practices and managing security solutions across the stack
• Monitoring and proactively managing the health and performance of our global network using modern telemetry and observability tools
• Contributing to the evolution of our Infrastructure-as-Code and CI/CD practices for network provisioning and deployment
• Collaborating closely with Network Engineering, Infrastructure and DevOps teams to deliver robust, future-ready solutions
• Mentoring and supporting junior engineers, fostering a culture of knowledge sharing and technical excellence
• Conducting regular audits to ensure compliance with internal standards and best practices
• Working hand-in-hand with the Network Operations team to ensure seamless delivery and continuous improvement

If you're motivated by solving complex problems, automating at scale, and working in a collaborative, high-performance environment, we'd love to hear from you.

You'll thrive in this role if you bring a mix of deep technical expertise, problem-solving instinct and a passion for modern network engineering.

We're looking for someone who can think strategically, automate intelligently and deliver reliably at scale.

The ideal candidate will have the following skills and experience:

• Experience designing, engineering and operating large-scale enterprise or data centre networks
• Expertise with Cisco and Arista hardware and software platforms, including IOS, IOS-XR, NX-OS and EOS
• Understanding of modern networking technologies such as BGP, OSPF, EVPN, VXLAN and MPLS, and how to apply them in production environments
• Exposure to WAN and SD-WAN solutions, with knowledge of segment routing and multi-tenant architectures
• Knowledge of automation and scripting, ideally with Python, Ansible, Jinja2 and Git, to help drive Infrastructure-as-Code practices
• Diagnostic and analytical skills, including packet-level troubleshooting and performance tuning in complex environments
• Familiarity with network monitoring, telemetry and predictive analytics tools to ensure proactive performance management
• Experience collaborating in Agile and DevOps-driven teams, where cross-functional alignment and fast iteration are keyCertifications such as CCNP (or equivalent) are preferred; CCIE or advanced vendor credentials are a strong advantage

G-Research London, UK Full time

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., * 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