Senior Network Engineer: Global Fortinet & Cloud Networking

Hamilton Insurance Group; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Hamilton Insurance Group in London is seeking a Senior Network Engineer to own Hamilton's enterprise network and Fortinet security across office, data centre, cloud, and remote-access environments. You will lead network operations, resilience, and security improvements in a global insurance context.

You will design and implement routing, switching, firewall governance, VPNs, and security architectures, collaborating with Infrastructure, Cloud, Security, and Service Management teams to meet

Qualifications

• Must have enterprise networking experience with ownership of critical network infrastructure and security services.

Responsibilities

• Serve as the primary technical owner of Hamilton's global enterprise network and Fortinet security platforms across office, data centre, cloud, and remote-access environments.
• Ensure availability, performance, security, and resilience of network services across data centres, offices, cloud, and remote-access platforms.
• Provide senior technical leadership during incidents and major changes, including firmware upgrades, hardware refreshes, migrations, and certificate renewals.
• Design, implement, and support enterprise routing and switching solutions using Cisco and Fortinet technologies (BGP, OSPF, VLANs, QoS, NAT, DNS, DHCP).
• Maintain highly available connectivity between offices, cloud platforms, data centres, disaster recovery locations, and third parties; lead root-cause analysis of complex issues.
• Design and maintain secure network architectures; lead firewall policy governance, VPNs, certificates, and logging.
• Develop automation using PowerShell, Python, Terraform, Ansible, APIs, Git, and CI/CD pipelines for configuration, backups, monitoring, and compliance.
• Drive continuous improvement and engineering standards; support NetApp storage networking; evaluate emerging technologies.
• Support disaster recovery, resilience testing, change, and regulatory procedures; provide technical evidence for audits.

Skills

Enterprise networking

Fortinet suite

Cisco Nexus

Network automation

IaC tooling

Monitoring & SIEM

DR & resilience

ITIL/ITSM

Azure/hybrid-cloud

Tools

FortiGate

FortiSwitch

FortiClient VPN/EMS

FortiAnalyzer

Fortinet Security Fabric

Cisco Nexus

Job description

Hamilton Insurance Group in London is seeking a Senior Network Engineer to own Hamilton's enterprise network and Fortinet security across office, data centre, cloud, and remote-access environments. You will lead network operations, resilience, and security improvements in a global insurance context.

You will design and implement routing, switching, firewall governance, VPNs, and security architectures, collaborating with Infrastructure, Cloud, Security, and Service Management teams to meet