Top Network Engineer Jobs in London

Build, operate, and scale CrowdStrike's global backbone and hybrid cloud networks. Design and implement IP and optical solutions, drive capacity planning, evaluate technologies, automate with IaC and CI/CD, support cloud networking, lead projects from ideation to implementation, and participate in 24x7 on-call rotation.

Support post-sales network solution engineering: translate designs into implementation plans, analyze customer network data, assist deployments, reconfigurations, and migrations, troubleshoot deployment package issues, and coordinate across engineering, field, and support teams under senior supervision.

Design, operate, troubleshoot, and automate secure enterprise routing, switching, wireless, WAN, and cloud connectivity. Balance platform architecture, standards, lifecycle planning, and automation with incident response, change safety, and operational delivery. Reduce recurring reactive work through software, APIs, Infrastructure-as-Code, Git workflows, testing, and CI/CD.

The Staff Network Engineer designs and optimizes global office networks, ensuring 99.9% uptime, and promotes security through Zero Trust Access while managing significant hardware investments.

Design, integrate, and support SCADA and OT networks for battery energy storage systems across EMEA. Lead system architecture, testing, troubleshooting, documentation, and customer technical interfaces. Monitor performance, drive root-cause analyses and continuous improvements, and support upgrades, lab testing, and field service activities with occasional travel.

Apprentice Network Engineer to support IT infrastructure with emphasis on Microsoft 365 and general networking. Duties include M365 administration, configuring and troubleshooting network devices, first-level user support, assisting IT projects, maintaining documentation, and monitoring network performance under mentor supervision during an 18-month apprenticeship.

Design, build and operate highly available low-latency co-location network infrastructure. Optimize performance, timing and throughput; implement packet-capture and market connectivity; develop automation and tooling; monitor lifecycle and reliability; collaborate with platform teams; contribute to incident response and on-call support.

Provide end-to-end network support for a global client: own and resolve incidents, coordinate with vendors and BT teams, implement designs, troubleshoot routing, switching, wireless, Riverbed and security devices, mentor NOC/Service Desk, and follow change control and security practices.

Implement, test, deploy, troubleshoot and maintain REST API and SIP telecom solutions. Monitor and tune infrastructure for high availability, develop test automation, perform packet/protocol analysis, support deployments and upgrades, participate in Tier 3 on-call rotation, and identify continuous improvement opportunities.

Own live technical execution of enterprise network deployments: run pre-install prep, troubleshoot Layer 2/3 and ISP issues in real time, validate hardware and NOS, sign off networks going live, document progress, and feed recurring failures into tooling and playbooks to reduce rework and accelerate installs.

Responsible for designing, implementing and supporting networking solutions across multiple sites, maintaining firewalls, routing and security policies, troubleshooting outages and circuits, performing capacity planning and monitoring, ensuring compliance with public-sector security standards, participating in on-call rotation, and travelling to UK (and occasional international) sites.

Design, implement, and maintain datacenter, cloud, and office network infrastructure. Configure firewalls, VPNs, peering, multicast, and NAC. Install and cable datacenter hardware, collaborate with infra and dev teams, develop network automation, provide BAU support and on-call coverage, and produce technical documentation.

Design, build, secure and manage Azure networking and hybrid connectivity solutions (VNETs, routing, VPN/ExpressRoute, firewalls, load balancing, DNS). Implement security controls, monitoring, governance, troubleshooting, documentation and collaborate with architects, cyber specialists and stakeholders to deliver resilient cloud network services.

Lead deployment, configuration, and live operation of vision and broadcast network systems across OB trucks, flypacks and remote production. Own camera, CCU, mixers, routers, multiviewers, SMPTE ST2110/IP workflows and multicast/PTP networks. Diagnose faults under pressure, support upgrades, mentor engineers, maintain standards, and contribute to technology strategy and documentation.

Design, secure and standardise OT network architecture for global BESS projects. Act as design authority, produce technical specifications, lead transformation, govern MSPs, ensure IT/OT segmentation and CNI compliance, and support project delivery and operational escalation.

Design, support, and maintain enterprise network systems (routers, switches, firewalls, VPNs, cloud networking). Monitor and troubleshoot network performance, implement secure scalable solutions (Zero Trust/SASE), document configurations, collaborate cross-functionally, and participate in on-call rotations to resolve incidents.

Support an EMEA colocation network switch refresh: configure devices in lab, coordinate racking and installs, execute migrations from legacy to new switches, validate post-migration, decommission old equipment, track progress, and coordinate stakeholders during migration windows.

The Senior Network Engineer will manage and scale network infrastructure, enhance workflows through AI and automation, and document solutions for improved efficiency.

Contract Data Centre Network Engineer to design, deploy, and operate high-performance data centre networks (leaf-spine, EVPN/VXLAN), manage routing (BGP/OSPF), automate configurations (Python/Ansible/Terraform), troubleshoot network and Linux systems, support Kubernetes networking, and contribute to monitoring, documentation, and capacity planning for AI/GPU infrastructure.

Design and operate multi-region Azure and AWS cloud networking and security for Kubernetes fleets, focusing on isolation, segmentation, egress control, and auditability for agentic AI workloads. Define infrastructure as code with Terraform, harden identity integration, use AI for monitoring and runbooks, and collaborate with Kubernetes and product teams to resolve complex networking issues.

Join Qube Research & Technologies as a Network Engineer responsible for designing large-scale datacentre networks, ensuring high-performance connectivity, and collaborating with teams to enhance infrastructure and troubleshooting.

Operate and support low-latency global network infrastructure across on-prem and cloud. Troubleshoot routing, MPLS, firewalls, and packet-level issues; perform incident response, customer onboarding, change execution, monitoring, automation, and deep packet analysis to reduce MTTR and improve observability.

Design, deploy, and operate lossless RDMA-capable leaf-spine fabrics for multi-tenant GPU clusters. Automate provisioning, build telemetry/observability, troubleshoot end-to-end performance, manage out-of-band and office networks, support tenant onboarding, and document designs while upskilling colleagues.

Lead design, deployment and support of enterprise Fortinet firewall services across cloud and hybrid environments. Manage policies, VPNs, routing, logging and automation (IaC/CI-CD), provide operational incident support, enable security best practices, assist audits and drive platform roadmaps.

Design, maintain, and optimize HLR/HSS/UDM subscriber templates and roaming logic. Lead Full MVNO profile deployments, collaborate with roaming partners and system integrators, define HLR/HSS KPIs, and troubleshoot signalling using Wireshark and roaming platforms.