Top Cyber Security Jobs in London

Develop and maintain native iOS features for the Nutmeg investment application using Agile practices. Own work from estimation through release and production support, troubleshoot defects, write unit and UI tests, participate in code reviews, and contribute to technical improvements. Collaborate with Product, Operations, and engineering teams while supporting releases, knowledge sharing, monitoring, and continuous improvement of the iOS codebase and development processes.

Own bookings growth across large enterprise accounts in the UK. Develop and execute territory sales plans, generate pipeline, acquire new customers, expand existing accounts, manage strategic opportunities, present complex data-center solutions, and close sales. Collaborate with sales engineers, sales development teams, distributors, VARs, and channel partners to exceed quotas and identify new market opportunities.

As an Enterprise Architect, you will lead tech advisory growth, collaborate on solutions, manage client relationships, and mentor junior consultants within the organization, driving technology transformation for clients.

Own the strategy, roadmap, and lifecycle of Cloudflare’s enterprise Email Security platform. Lead threat detection investments, Zero Trust integration, customer discovery, competitive differentiation, and global launches. Partner with engineering, threat intelligence, sales, and design teams to address email threats such as business email compromise and phishing. Drive product growth, enterprise adoption, and technical platform evangelism while making data-informed investment decisions.

Leads sales operations and commercial strategy teams supporting complex enterprise deals. Oversees deal support, pricing strategy, modeling, proposals, solution positioning, and sales enablement. Partners with Sales, Product, and Solution Consulting leaders on strategic opportunities, coaches team members, establishes scalable processes, and improves commercial execution, reporting, and seller productivity. Requires hands-on involvement in high-priority customer opportunities and the ability to influence executive stakeholders.

Develop and deliver native iOS features for the Nutmeg app using Agile practices. Own tasks end-to-end, write tests, participate in releases and code reviews, troubleshoot defects, contribute to technical initiatives, and collaborate across product, operations, and engineering to improve the codebase and tooling.

Lead development of cloud-native Python applications for global commodities trading desks. Design, build, test, and operate resilient, secure production systems; drive automation and CI/CD; evaluate vendor solutions; and mentor engineering communities of practice.

Designs, develops, tests, and maintains scalable, secure front-end applications using React and TypeScript. Uses AI-assisted development tools responsibly, produces architecture artifacts, improves code quality, debugs complex issues, and creates visualizations from large datasets to drive system improvements.

Lead engineering on design, development, and operational stability of market-facing systems. Deliver secure, high-quality Java code, promote enterprise AI-assisted engineering practices, drive automation and resiliency, evaluate vendor solutions, and mentor teams while ensuring secure, compliant adoption of AI and cloud-native architectures.

Design, build, and operate Cloudflare application security systems, including rate limiting and web application firewall services. Lead complex technical projects, define scalable architectures, improve reliability, review code and designs, collaborate across engineering teams, and mentor other engineers. The role involves distributed systems, production monitoring, debugging, operational improvements, and occasional on-call support.

Design, develop, and maintain secure, high-quality production code and system architectures. Troubleshoot complex issues, analyze large datasets for improvements, ensure application resiliency and CI/CD practices, and contribute to engineering communities and inclusive team culture.

Design, implement, and maintain distributed software systems supporting Cloudflare’s application security products, including Rate Limiting and Web Application Firewall. Participate across the software development lifecycle, write automated tests, monitor production deployments, debug complex systems, review code, collaborate with security and infrastructure teams, and mentor colleagues. The role involves Rust and Go development, databases, Docker, Kubernetes, and maintaining reliable, fault-tolerant systems at scale, with possible on-call responsibilities.

Monitors and triages security alerts, investigates incidents through resolution, conducts threat hunting, and develops or tunes detection rules. The analyst correlates endpoint, network, cloud, and identity telemetry; uses AI and automation to improve investigations; documents findings and incident reports; collaborates with global SOC and response teams; and helps maintain playbooks while participating in a weekend rotation approximately every five weeks.

The Partner Program Manager will design and manage a tiered partner program, focusing on value-added systems for partner rewards, enablement, and performance analytics.

Leads end-to-end delivery of complex technical programmes across secure access and hosting. Develops roadmaps, manages priorities, budgets, vendors, risks and delivery performance, and reports progress to senior stakeholders. The role partners across engineering, product and business teams, removes delivery barriers, and promotes agile, product-led ways of working. It also involves coaching multidisciplinary teams, improving delivery practices, and ensuring secure, stable services and measurable business value.

Own the technical strategy and customer journey for a portfolio of education institutions adopting OpenAI solutions. Lead discovery, architecture design, technical evaluations, prototypes, adoption roadmaps, governance, deployment readiness, and value realization. Build relationships with executive, academic, research, and technical stakeholders while coordinating specialist teams. Translate education needs into responsible AI use cases and reusable architectures, track adoption and customer impact, and provide feedback to Product, Engineering, and Research.

Conduct advanced application security research across GitLab’s DevSecOps and AI-powered platforms. Identify and exploit novel, systemic, and chained vulnerabilities; develop proof-of-concept exploits, testing methodologies, and research automation; assess AI attack vectors and open-source dependencies; drive remediation and security improvements; advise engineering teams, contribute to roadmaps, mentor researchers, and share findings with the security community.

Conducts advanced application security research across GitLab’s DevSecOps and AI-powered platforms. Responsibilities include discovering and exploiting systemic vulnerabilities, penetration testing, developing proof-of-concept exploits, researching AI and agentic security threats, building automated research tooling, coordinating remediation, mentoring security professionals, and communicating findings to engineering and security communities.

Owns architecture, technical strategy, and roadmaps across Arbor’s core product suite and multiple engineering teams. The role guides architectural transformation, AI-first SDLC adoption, system design, technical debt reduction, and complex initiative delivery. It partners with product and engineering leadership, mentors Technical Leads and Senior Engineers, leads architectural reviews, and ensures quality, reliability, security, and compliance standards. This is a strategic technical leadership role focused on coaching and delivery rather than hands-on coding.

Design and govern the end-to-end architecture of Era4’s Kubernetes-based AI infrastructure. The role develops platform blueprints, technical standards, high- and low-level designs, multi-tenant GPU cloud architectures, capacity plans, and technology roadmaps. It coordinates Kubernetes, GPU, networking, storage, automation, security, observability, billing, and cloud services while guiding platform engineering and operations teams toward secure, scalable, reliable, and commercially viable solutions.

Lead Samsara’s vulnerability management and application security programs across cloud, firmware, IoT, and corporate systems. Define technical strategy, automate vulnerability detection and response, reduce remediation time, guide engineering teams, mentor security engineers, investigate critical vulnerabilities, and support incident response. The role requires strong AWS, programming, vulnerability management, application security testing, AI/LLM, and security automation expertise.

Own and evolve GitLab’s authorization systems across its Ruby on Rails monolith and next-generation Rust policy engine. Design fine-grained permissions for users, tokens, roles, and AI agents; secure GraphQL and REST APIs; lead feature-flagged rollouts and migrations; improve performance and reliability; and collaborate across authentication, platform, AI, and modular-service teams in a distributed asynchronous environment.

Owns GitLab’s global security awareness and human-risk program, including training, phishing simulations, behavior-change initiatives, security culture campaigns, multimedia content, platform administration, reporting, vendor management, policy support, audit evidence, and remediation tracking. The role requires measurable risk reduction across a globally distributed enterprise and strategic influence across technical and non-technical teams.

The Senior Application Security Engineer will design and improve Secure SDLC, integrate security practices, and lead application security reviews across multiple platforms while ensuring fast delivery of secure products.

Leads a multi-layered engineering organization supporting Manufacturing products. Defines engineering strategy, oversees delivery and architecture, develops engineering leaders, and drives cloud-native, DevOps, quality, security, and AI adoption. Partners with Product, Architecture, and Manufacturing leaders to align technology with business and customer outcomes. Provides strategic leadership for configurable, multi-tenant manufacturing software and may work directly with customers at manufacturing locations.