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

• London
• Lead

Technical owner for a portfolio of EMEA strategic accounts and US identity/workforce platform partners, split roughly 70/30. Drives API and SDK integration, product adoption, RFPs, trials and proofs of concept while mentoring solutions engineers globally and feeding market insight into the product roadmap.

RESTful APIs · SDKs

• Aarhus, Denmark
• Remote
• Senior
• Permanent

Owns major components of the Windows kernel-mode endpoint sensor, architecting and building anti-virus and EDR features that cut across file system, memory, process and networking subsystems. Works on cross-platform deliverables with shared components across Windows, Mac and Linux, leading projects from design through delivery and demo.

Windows · Mac · Linux +1

• 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

• London
• Mid-level

Own the full software development lifecycle for distributed systems supporting threat disruption and legal response, building data pipelines that collect and expose threat intelligence for analysts and customers. Work primarily in Golang and TypeScript with Rust, Kafka, Redis, Kubernetes, Terraform and Postgres, collaborating with Threat Intelligence, Trust & Safety, Legal and Product teams, plus on-call rotations and mentoring.

Golang · TypeScript · Rust +7

• United Kingdom
• Remote
• Mid-level

Customer-facing technical role guiding higher-education and research clients through security transformation, running discovery, demos, workshops and technical validation across on-prem, cloud and SOC solutions. Works with Professional Services, Customer Success and channel partners to drive adoption, and requires a strong pre-sales background plus experience with Systems Integrators.

Palo Alto Networks

• London
• Mid-level

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.

Chromium · Cloudflare Workers · Nomad +3

• Portsmouth
• Hybrid
• Mid-level
• Permanent

Systems engineering role focused on radiation and nuclear hardening for military fixed ground installations, spanning requirements elicitation, mitigation planning, test plans and architecture definition. You will lead customer and test house engagement, working with IS/IT specialists on end-to-end system lifecycles for defence communications equipment. Based on-site in Portsmouth with hybrid and flexible working, on stable long-term MOD, Government and SATCOM projects.

SATCOM

• United Kingdom
• Hybrid
• Mid-level

Joins the Information Security Service Delivery team to assess, design, configure and integrate security technology controls, acting as a technical escalation point for security concepts. Works hands-on with Zscaler, Okta, Crowdstrike, cloud and endpoint security, threat modelling and security architecture frameworks, ensuring designs meet policies and regulatory requirements.

Zscaler · Okta · CrowdStrike +5

• London
• Hybrid
• Senior

Engineer and maintain enterprise Windows endpoint, Citrix and application-delivery services across EMEA, covering design, build, testing, release and operational handover. The role involves automation with PowerShell, vulnerability and lifecycle remediation, and root-cause analysis using platform telemetry, working with infrastructure, cyber security and vendor teams.

Microsoft Intune · Windows Autopilot · Windows 365 +7

• London
• Remote
• Mid-level

Customer-facing pre-sales role in the Central Government team, translating complex cybersecurity solutions into strategic business value. You lead discovery, technical validation, demos and workshops across the PANW portfolio, working with Systems Integrators and internal specialist teams to drive adoption and value realisation.

Palo Alto Networks · SASE · SaaS +2

• London
• Lead

Security lead for an AI engineering team's products and platform, owning security reviews, threat modelling and sign-off from design through production. Covers AI/LLM risks like prompt injection, CVE remediation, scanning tooling in CI/CD, pen testing and incident response, reporting directly to the CIO.

Azure · GCP · GitHub Actions +7

• London
• £80,000 – £120,000 pa
• Lead · manages people

Lead the EUC Engineering team, owning the modernisation roadmap for secure, persona-led workplace services across physical, virtual and cloud environments. Balance strategic transformation with the stability, security and governance of business-critical platforms, while coaching engineers and influencing senior stakeholders across infrastructure, cyber and architecture.

Microsoft Intune · Windows Autopilot · Azure Virtual Desktop +2

• Blackburn
• Hybrid · 1–2 days in office
• £60,000 – £65,000 pa
• Senior

Hands-on senior role owning the reliability, security and improvement of a mixed Linux and Microsoft infrastructure estate. Day to day covers server administration, Ansible automation, Docker and Kubernetes container platforms, MySQL/Galera and MSSQL databases, CI/CD pipelines, monitoring, patching and disaster recovery, working closely with the Software Development Team, IT Operations and third-party partners.

Ansible · Docker · CRI-O +7

• London
• Hybrid
• £89,000 pa
• Senior

Architect secure, resilient network connectivity spanning AWS cloud platforms and on-premise infrastructure, supporting clinicians and researchers accessing sensitive genomic data. The role balances long-term network strategy with practical delivery, defining target architectures, standards and reusable patterns across cloud, hybrid, remote-access and partner connectivity. Involves designing AWS networking, hybrid multi-site connectivity, zero-trust security, and providing architectural governance through delivery.

AWS · Cisco · NVIDIA +7