Senior Network Operations Engineer

Job Overview

As a Senior Network Operations Engineer in Bristol, UK, you'll play a crucial role in maintaining Graphcore's networks, ensuring they are reliable and secure. This full-time position involves managing the network lifecycle, from defining operational requirements to resolving complex incidents.

Your contributions will lead to reduced downtime and manual errors across new and existing services. You'll empower colleagues to operate services with confidence by creating practical runbooks and recovery procedures.

Key Responsibilities

• Troubleshoot and resolve complex network issues, including routing and firewall problems.
• Improve monitoring and automate routine operations to enhance network efficiency.
• Support upgrades and deployments through thorough testing, controlled changes, and clear handovers.
• Work with AWS networking, Cisco Software-Defined Access, and SD-WAN across cloud and on-premises environments.
• Occasionally travel to remote data centres and offices for installations, troubleshooting, and hands-on support.

Team and Culture

You'll join a collaborative, multidisciplinary IT infrastructure team that values knowledge sharing and teamwork. As a senior engineer, you'll be responsible for owning complex incidents from start to resolution, using monitoring evidence and incident trends to prioritize reliability improvements.

Requirements

• At least five years of hands-on network engineering experience, primarily in production support, with certification in a major networking platform.
• Strong practical knowledge of large-scale L2/L3 networks, including BGP, OSPF, switching, routing, and resilience.
• Experience with centrally controlled Wi-Fi systems like Cisco Meraki or Aruba.
• Familiarity with managing and troubleshooting centralized firewalls, including rulesets, NAT, and VPNs, as well as open-source products like pfSense.
• Hands-on experience with automation tools like Ansible or Python.
• Evidence-led troubleshooting using monitoring, packet captures, and logs, along with clear communication and sound judgement during incidents.

Benefits

• Flexible working arrangements.
• Generous leave policy.
• Retirement planning support with up to 5% matched pension.
• Phantom equity opportunities.
• Well-designed office spaces with amenities like free food and an on-site barista.
• Income protection and life assurance.
• Electric Vehicle Scheme.
• Flexible benefits package, including options for private medical insurance, cycle to work scheme, and dental cover.