Cyber Security Jobs

• Paris, France
• On-site
• 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 leads test engineering initiatives across teams, combining automation with exploratory testing.

Playwright · Cypress · Selenium +12

• London
• On-site
• Senior

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

Playwright · Cypress · Selenium +12

• Reading
• Remote
• Senior
• Permanent

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 architecture, design and delivery across file system, memory, process and networking subsystems, with shared components across Windows, Mac and Linux. Involves leading projects, mentoring and collaborating with distributed teams.

Windows · Mac · Linux +2

• 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

• Cambridge
• Hybrid · 2 days in office

Explore and prototype machine learning solutions across domains, using language models, neural networks, statistical methods and classical ML, then implement models into the wider software stack. Work independently and with software engineers and security analysts, optimising models for latency and memory on edge devices. Hybrid role with two compulsory days a week in the Cambridge office.

PyTorch · TensorFlow · scikit-learn +2

• London
• 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. The role combines technical delivery with architecture, security, compliance and service management responsibilities.

Workday · Workday Studio · Enterprise Interface Builder +7

• London
• Permanent

Builds and operates large-scale distributed systems that process security-relevant data with high availability and low latency, owning services end to end including architecture, deployment, monitoring and on-call. Works with very large datasets and cross-functional security, compliance and service teams, contributing to technical direction and mentoring engineers.

• London
• Mid-level
• Permanent

Builds and operates automation platforms that onboard threat detection, remediate security risk and accelerate incident response across every AWS account. Day to day involves designing loosely specified features, writing well-tested Python and TypeScript on AWS services, instrumenting systems for operational excellence, and participating in an on-call rotation. The team runs foundational services at very high scale with a strong 'you build it, you run it' culture.

AWS

• Lifton
• £57,000 pa

Supporting the control systems behind food processing, filling and packaging equipment at the Ambrosia Creamery, diagnosing PLC, HMI, SCADA and industrial network faults and driving continuous improvement projects. The site standard is Siemens, with S5 and S7 PLCs and TIA Portal, and the role also covers commissioning, FAT/SAT, obsolescence planning and OT cyber security.

Siemens S5 · Siemens S7 · TIA Portal +2

• Whiteley
• Hybrid
• £61,500 – £78,800 pa
• Senior

Designs, develops and maintains manual and automated test scripts and reporting for a flagship National Security programme, using frameworks such as Katalon Studio, Selenium, SoapUI and JUnit. Analyses requirements and designs to build risk-based test approaches, working within hybrid Waterfall and Agile scrum teams alongside software and systems engineers.

Katalon Studio · Selenium · SoapUI +5

• Warwick
• Hybrid
• £65,000 – £75,000 pa
• Mid-level

Embed security into the software development lifecycle, partnering with engineering teams to improve secure coding and conduct application security assessments. Support DevSecOps initiatives, identify vulnerabilities before release, and strengthen security within CI/CD pipelines across a growing technology estate.

SaaS

• 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, resolving infrastructure, application, database and networking issues. Focus on Microsoft Azure, Windows, monitoring, security vulnerability remediation, automation and disaster recovery planning within a growing international software organisation.

Microsoft Azure · Windows

• London
• On-site
• Senior
• Permanent

Founding engineer role building a cloud intrusion-detection product using canaries, working across the stack mainly in C# on .NET Core 10, plus Terraform and an HTMX frontend. You'll work face to face with both founders, the engineering team and customers, shipping daily with little bureaucracy and encouraged AI-assisted development.

C# · .NET Core · Terraform +6

• 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

• Cambridge
• On-site
• Mid-level
• Permanent

Consultants assess critical systems for cyber-physical vulnerabilities, combining deep hardware research, testing and reverse engineering with rapid prototyping of proof-of-concept demonstrators. Work spans niche defence and national security projects, interfacing with hardware via protocols like JTAG and UART and using test equipment such as oscilloscopes. The role is fully on-site in Cambridge labs within a flat, collaborative ~40-person consultancy.

JTAG · UART · Oscilloscopes