Cyber Security Jobs

eFinancialCareers · London · £55,000 – £70,000 pa

Design, build and maintain secure AWS cloud applications and infrastructure within an autonomous DevOps team serving national security and public-sector clients. Work spans infrastructure-as-code, Python/Bash scripting, container platforms and CI/CD, with ownership across the full delivery lifecycle in an Agile environment.

Sizewell C · Leiston · £66,000 pa

Responsible for the delivery, performance and continual improvement of enterprise IT services supporting the Sizewell C programme, spanning infrastructure, Azure cloud, Microsoft 365, networks, applications and cyber security operations. Combines technical leadership with ITIL service management, supplier governance and operational assurance in a highly regulated nuclear environment, acting as escalation point for senior stakeholders.

Ricoh · London

Builds and operates secure, scalable platforms and services that take enterprise AI solutions from evaluation into production. Works across DevOps, cloud engineering and MLOps, configuring environments, CI/CD pipelines, automation, monitoring and identity controls alongside AI specialists, data scientists and security teams.

eFinancialCareers · London

Network Engineer role within a team of network experts, managing network delivery to completion and handing off to support teams. Administers large-scale projects, tests, documents and deploys network infrastructure solutions, working with Solutions Architecture, Operations and information security. Requires Cisco routing/switching, SD-WAN (Viptela, Meraki), Azure networking, Terraform and firewall/VPN experience.

Cloudflare · London

Builds and maintains a Chromium-based browser engine, remote rendering and streaming tech, and distributed services that run browser sessions across a global network. Day-to-day work spans C++ browser code, Go/Rust/TypeScript services, debugging across browser processes and Linux hosts, and improving latency and reliability, with production on-call.

Cloudflare · London

Acts as primary technical responder for premium enterprise customers, autonomously investigating complex threat telemetry and handling live incident response for volumetric DDoS and application-layer attacks. Implements mitigation across OSI Layers 3, 4 and 7 using Cloudflare's security suite, performs packet and traffic flow analysis, and advises customers during active incidents. Requires 24x7 rotating shifts.

Mimecast · London · £44,000 – £66,000 pa

Acts as the trusted technical advisor for a portfolio of mid-market accounts, working in a three-person pod with an Account Manager and Renewals Manager. Owns platform adoption, configuration health and value scoring across email security, HRM and Incydr products, and packages proof-of-value and business reviews for executive audiences. Also leads churn mitigation and identifies expansion signals ahead of renewal.

Sizewell C · London · £66,866 pa

Owns end-to-end delivery, performance and continual improvement of enterprise IT services for a major nuclear energy programme, spanning Microsoft 365, Azure, infrastructure, networks, applications and cyber security operations. Combines technical leadership with ITIL service management, supplier governance and regulatory compliance, acting as escalation point for senior stakeholders and managing multiple managed service providers.