Cyber Security Jobs

• United Kingdom - Field
• Senior

Senior individual contributor providing cross-team technical leadership for quality engineering across a multi-tenant SaaS platform. Defines automation architecture and risk-based quality strategies, builds reusable test frameworks, and embeds unit, integration, contract, API and end-to-end testing into CI/CD pipelines. Leads performance, scalability and resilience validation, including fault injection and chaos testing, while mentoring engineers and influencing release decisions.

Kubernetes · OAuth 2.0 · mTLS +4

• United Kingdom - Field (Onfido)
• Senior

Customer-facing role leading enterprise onboarding and implementation of identity and security solutions, guiding customer engineering teams through design, integration, testing and go-live. Involves hands-on troubleshooting of REST APIs, mobile and web SDKs, log and API traffic analysis, and advising on performance, scalability and security. Requires independently managing multiple concurrent engagements and mentoring junior team members.

REST APIs · Android Studio · Xcode +7

• London
• Hybrid
• Senior

Owns the global product vision and multi-year strategy for CrowdStrike's Falcon Next-Gen SIEM platform, prioritising third-party data connectors and integration pipelines based on market research and customer demand. Works across engineering, data services, sales ops and partners to define ingestion SLOs, mentor product managers and expand the SIEM ecosystem.

CrowdStrike Falcon · LogScale

• Boston, United States
• Remote
• £140,000 – £215,000 pa
• Lead · manages people

Lead a team of engineers building self-service infrastructure-as-code primitives, high-availability services and cloud cost optimization across a multi-cloud environment. The role combines people management with hands-on architecture of large-scale distributed systems, using tools like Terraform, Pulumi, Chef and Python or Go, with a strong SRE and GitOps focus.

Chef · Puppet · Salt +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

• London
• €68,000 – €94,000 pa
• Senior

Owns the strategic roadmap for Cloudflare's Email Security product, driving differentiation against legacy incumbents and integrating with the Zero Trust stack (Gateway, CASB, DLP). Works closely with Threat Intelligence and Detections teams, engages customers directly, and evangelizes the platform internally and externally.

Cloudflare One · Gateway · CASB +3

• United Kingdom
• Remote
• Lead

Deliver white-glove onboarding and ongoing technical guidance for Managed XSIAM customers, analysing security data to improve detection coverage, alert quality and tenant hygiene. Lead customer touchpoints and security reviews while partnering with Unit 42 SOC engineering, Product and MDR teams to build automation workflows and scalable service frameworks.

XSIAM · Unit 42

• Cambridge

Investigates emerging cyber threats and attacker TTPs across production and lab environments, analysing security data to improve detection and response. Works closely with development teams to turn research findings into product improvements, using scripting and data analysis to test new detection approaches.

MITRE ATT&CK · PowerShell

• Chippenham
• Hybrid
• Mid-level
• Permanent

Day-to-day administration of the Spacecraft Control Centre's Linux and Cisco-based command and control systems, including configuration, equipment swap-outs, and restoration of capability. Acts as lead engineer for deployment planning, testing, and patching of system upgrades across a multi-site SCOF network, liaising with customers on fault investigation. Requires in-date RHCSA and offers hybrid, flexible working.

Cisco · CCNP · CCNA +2

• Cambridge

Join a global team developing and improving threat detection capabilities across key product areas. You'll respond to customer incidents, analyse cyber threat intelligence, and build detection schemes aligned to adversary techniques, collaborating with Development, Security Research and SOC teams.

Darktrace · GitLab

• Farnborough
• Senior

Customer-facing Solution Architect shaping and winning strategic UK Central Government opportunities, working with account, capture and bid teams from early qualification through contract award. Leads solution development, discovery workshops and architecture reviews across Data & Analytics, Cloud, Cyber, AI/ML and Systems Integration, and supports handover into delivery.

Azure · AWS

• Hull
• On-site
• Lead

Senior escalation point for complex L2/L3 infrastructure incidents, owning them through to resolution across Microsoft 365, Entra ID, Active Directory, Intune, and Windows/Linux estates. The role also covers security hardening, patching, vulnerability management, and PowerShell automation, while mentoring L1/L2 engineers and working with the IT Architect.

Microsoft 365 · Entra ID · Active Directory +7

• London
• Senior

Customer-facing Solution Architect shaping and winning strategic UK Central Government opportunities, working with account, capture and bid teams from early qualification through contract award. Leads solution development, discovery workshops and architecture reviews across Data & Analytics, Cloud, Cyber, AI/ML and Systems Integration, then supports handover into delivery.

Azure · AWS · TOGAF

• Manchester
• Hybrid
• £60,000 – £75,000 pa
• Mid-level

Lead and evolve the security, privacy and governance framework for a UK software business, acting as Data Protection Officer. Day to day you own the ISMS and ISO 27001/Cyber Essentials Plus certifications, run UK GDPR and DPIA work, build AI governance, manage cyber risk and supplier assurance, and present to board-level stakeholders.

ISO 27001 · Cyber Essentials Plus

• London
• Hybrid
• £70,000 – £75,000 pa
• Senior
• Permanent

This role involves leading information security governance, risk management, and compliance activities within a multinational organisation. The Information Security Manager will drive security risk assessments, audit programmes, and regulatory certification efforts including ISO 27001, PCI DSS, and NIS2. With a focus on cloud security governance, the role requires strong engagement with senior stakeholders and expertise in securing AWS and Azure environments.