Salary: £42,923 - 47,044 per year Requirements: A high level of technical skills in networking and cloud environments Drive and enthusiasm to lead and implement network infrastructure changes High level of self-motivation Confidence in engaging with technical specialists Strong collaboration skills at all levels Excellent troubleshooting and problem-solving skills Qualifications in networking or cloud technologies are advantageous Experience: Working with network technologies in cloud environments Leading the delivery of cloud network infrastructure Using Infrastructure as Code (IaC), especially Terraform Experience in a 24/7 support environment Delivering network infrastructure upgrades in cloud and traditional settings Responsibilities: Lead technical improvements and upgrades to cloud and on-premise network infrastructure Manage the migration of network services to the cloud Collaborate with the Network Architect on future network strategy and design Oversee on-premise hardware upgrades, including switch stacks Work with other teams on projects and troubleshoot network issues Support the existing network infrastructure in both environments Represent the Networks team when the Network Manager is unavailable Technologies: Architect Cloud Hardware Support Network Terraform AWS Azure Cisco DevOps Ethernet Firewall LAN LESS Office 365 Security WAF More: We are excited to offer a Lead Infrastructure Engineer position within our Network team at Companies House in Cardiff, Wales. This role is essential for providing network services and support for both cloud-hosted and on-premise systems, with a commitment to a 24/7 operational schedule. We pride ourselves on fostering a flexible and welcoming work culture that promotes work-life balance, offering benefits like 30 days of annual leave, 8 bank holidays, and enrollment in the Civil Service Pension scheme with a substantial employer contribution. We value your well-being, providing a work environment that supports your success. last updated 10 week of 2026