Cyber Security Jobs

• Portugal - Field
• Senior

Owns planning, coordination and execution of test and quality activities within a cross-functional Identity Verification product team, covering web, mobile, backend and ML-powered products. Builds maintainable automated test frameworks and suites, mentors colleagues and drives quality initiatives across engineering teams.

Playwright · Cypress · Selenium +14

• United Kingdom - Field (Onfido)
• Senior

Owns test planning, coordination and execution within a cross-functional identity verification product team, covering web, mobile, backend services and ML-powered products. Builds maintainable automated test frameworks and suites, supports acceptance and exploratory testing, and mentors colleagues while improving CI/CD pipelines and release feedback loops.

Playwright · Cypress · Selenium +12

• London
• Remote
• Senior
• Permanent

Builds and owns major components of the Falcon endpoint sensor, a Windows kernel-mode driver that observes system activity, detects malicious behaviour and provides on-box prevention plus telemetry to the cloud. Work spans OS internals such as file system, memory, process and networking, with cross-platform components shared across Windows, Mac and Linux.

Windows · Mac · Linux +1

• Ireland
• Remote
• Senior
• Permanent

Owns major components of the Windows kernel-mode sensor, architecting and building next-generation anti-virus and EDR security software. Works across core OS subsystems like file system, memory, process and networking, with cross-platform deliverables for Windows, Mac and Linux. Leads projects end to end, mentoring and collaborating with distributed teams.

Windows · Mac · Linux +2

• Cambridge
• Lead

Hands-on technical leadership role maintaining and evolving the Workday integration ecosystem across HR and Finance, reporting to the Digital Transformation Lead. You will design, build and support integrations using Workday Studio, EIB, web services and APIs, govern the Workday security model, and develop reporting and analytics, while balancing project delivery with operational support.

Workday · Workday Studio · Enterprise Interface Builder +7

• London
• On-site
• Senior
• Permanent

Builds AI/ML-driven security automation systems that detect, analyse and respond to threats at Amazon scale, integrating automated detection into the company's security infrastructure. Works alongside security engineers and scientists on proactive, offensive and defensive tooling, researching and prototyping new approaches. Distinct for its focus on autonomous security across one of the world's largest tech ecosystems.

AWS

• London
• Mid-level
• Permanent

Builds and operates automation platforms that onboard threat detection, remediate security risk and accelerate incident response across every AWS account. The role spans designing loosely specified features, owning operational health through instrumentation and automation, and participating in an on-call rotation, using AWS services, Python and TypeScript at very high scale.

AWS

• London
• Hybrid · 2 days in office
• Senior

Customer-facing pre-sales technical role supporting Key Account Managers to design and manage Darktrace deployments for the UK's largest enterprise customers. Involves building technical relationships, responding to RFIs/RFPs, designing deployment architectures, and evangelising products at events, with roughly 20% travel.

AWS · Azure · Security+ +2

• Chichester
• Hybrid · 3 days in office
• £50,000 – £65,000 pa
• Mid-level

Hands-on role supporting and maintaining cloud-hosted production, development and test environments, with a strong focus on Microsoft Azure. Day to day involves troubleshooting infrastructure, application, database and networking issues, monitoring performance and security, remediating vulnerabilities, and improving processes through automation and documentation. Also supports disaster recovery planning and testing within a collaborative international software team.

Microsoft Azure · Windows

• Manchester
• £55,000 – £75,000 pa
• Mid-level

Design, build and maintain CI/CD pipelines in Azure DevOps, automating build, test, deployment and infrastructure provisioning. Manage Azure resources with Terraform, Bicep or ARM templates, support App Services and Function Apps, and integrate testing, code quality and security tooling such as SonarCloud and Snyk. Work closely with developers and stakeholders in a collaborative, flexible team.

Azure DevOps · Azure App Services · Azure Functions +7

• London
• Mid-level

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.

Cloudflare · Magic Transit · Magic Firewall +7

• Basingstoke
• Hybrid
• £41,000 – £45,000 pa
• Entry level
• Contract

A KTP Associate role transforming in-house cybersecurity software using Large Language Models and NLP, building real-time threat detection and clear user-facing responses. Involves developing UI and API integrations, working with large datasets and PyTorch, and acting as project lead while embedding technology and upskilling company staff.

PyTorch

• London
• Senior

Builds and operates Cloudflare's Chromium-based browser isolation engine, working across C++, Rust, Go and TypeScript on remote rendering, streaming and distributed session services. The role spans systems programming, distributed systems and security, leading multi-component initiatives and on-call incident response.

Chromium · Cloudflare Workers · Nomad +3

• London
• Remote
• £100,000 – £115,000 pa
• Lead · manages people

Lead a team of three platform engineers while spending roughly half your time hands-on, owning the reliability, security and scalability of an Azure-based cloud platform. You'll set the platform roadmap, champion Terraform and Kubernetes/Azure Container Apps, and improve CI/CD with Azure DevOps and GitHub Actions. Fully remote in the UK with one day per month in London.

Azure · Terraform · Kubernetes +3

• Benfleet

Supports the compliance and integrity of control and information systems at a gas-fired power station, covering security strategy, policies, risk assessments, audits and incident response. Works with the Cyber Security Manager on OT security, ISA/IEC 62443 standards and regulatory frameworks, plus Management of Change and RCA investigations.

ISA/IEC 62443 · NIS Directive · NCSC Cyber Assessment Framework +1