Cyber Security Jobs

• France - Field (Onfido)
• Senior

Owns planning, coordinating and executing test and quality activities within a cross-functional identity verification product team, covering web, mobile, backend and ML-powered journeys. Builds maintainable automated test frameworks and suites, mentors colleagues, and leads test engineering initiatives across teams. Combines automation with exploratory testing and works with TypeScript, Ruby, Python, Playwright, Cypress, Selenium and CI/CD pipelines.

Playwright · Cypress · Selenium +7

• London
• Hybrid · 3 days in office
• Senior
• Permanent

Builds and operates production ML systems for document classification and extraction, using LLMs/VLMs and traditional ML to power identity verification at scale. Leads technical design from RFC to deployment, optimises GPU inference, and develops training and evaluation pipelines. Works in a squad-based team alongside Applied Science, Product and Data Science.

AWS · Kubernetes · TensorFlow +4

• United Kingdom
• Remote
• Senior
• Permanent

Owns major components of the Windows kernel-mode endpoint sensor, architecting and building anti-virus and EDR features that span file system, memory, process and networking subsystems. Leads projects from design to delivery, mentors engineers and collaborates with distributed, cross-platform teams on shared Windows, Mac and Linux components.

Windows · Mac · Linux +1

• Romania
• 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 +4

• London
• Mid-level
• Permanent

Builds and operates AWS services that detect and automatically mitigate cybersecurity threats across Amazon's infrastructure at massive scale. Works with security engineers and data scientists on low-latency, big-data architectures using Lambda, Kinesis and DynamoDB, with shared ownership of operational excellence and on-call rotation.

AWS · AWS Lambda · Amazon Kinesis +1

• London
• Permanent

Join a Security Operations Centre to build detections for suspicious and malicious behaviour, respond to security incidents, and engineer automation and AI-driven solutions that improve team efficiency. You'll collaborate with data scientists, software engineers and security experts to protect AWS infrastructure and UK customers at massive scale.

AWS

• London
• Hybrid · 2 days in office
• Senior

Design, build and operate distributed systems behind Cloudflare's Application Security products (WAF, Page Shield, API Shield) at internet scale, using Go or Rust and devops tooling like Kubernetes and Kafka. The role includes reviewing RFCs and code, on-call shifts, and mentoring other engineers.

Kubernetes · Salt · Kafka +7

• Fleet
• Hybrid
• Mid-level

Owns day-to-day security alerting, investigations and incident response across a cloud-native microservice platform and internal IT estate, directing a Platform Ops team on remediation. Manages SIEM, endpoint and Microsoft 365 security tooling, vulnerability management, IAM and penetration testing engagements, while maintaining ISO 27001 documentation and UK GDPR compliance.

AWS · Kubernetes · EKS +5

• London
• Hybrid · 1–2 days in office
• £75,000 – £90,000 pa
• Senior
• Permanent

Design, build and operate secure AWS platforms using Terraform, Kubernetes/EKS and CI/CD for public and private sector clients. You will own technical delivery in your area, create reusable modules and deployment patterns, and mentor less experienced engineers within multi-disciplinary consulting teams.

AWS · Terraform · Kubernetes +7

• Stevenage
• On-site
• Mid-level
• Permanent

Configure, instrument and operate electrodynamic shaker systems to run vibration and shock tests on new spacecraft equipment, installing accelerometers and flight hardware. Work with mechanical engineers to meet customer test objectives, maintain instrumentation and facilities through calibration and logbooks, and support internal and external audits while upholding quality and safety standards.

Electrodynamic Shaker Systems · Vibration Control Software · Accelerometers

• London
• Mid-level

Deploy, integrate and optimise AI-driven cybersecurity across network, cloud, OT and email environments for post-sales customers. Handle deployment projects to SLOs, resolve support tickets and act as a trusted advisor on security infrastructure design, liaising with sales, customer success and operations.

AWS · Microsoft · Cisco +2

• Peterborough
• £55,000 – £60,000 pa
• Lead

Senior technical authority owning firmware architecture and standards for smart metering products, working entirely in embedded C on Microchip tools. Leads complex new development, redesign and modular improvement work, embeds cyber security, and mentors engineers, with a path to leading the firmware function.

Microchip

• 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

• Knutsford
• Senior · manages people

Hands-on engineering role safeguarding encryption keys and cryptographic services across 300+ enterprise platforms, working extensively with Thales and Entrust HSMs. Involves key management, certificate management, production support, and on-call rotation, with occasional off-site data centre work.

Thales · Entrust · SharePoint +5

• Kings Hill
• Hybrid
• £54,500 – £55,000 pa
• Mid-level
• Permanent

Monitor, triage and investigate security alerts, incidents and requests, managing records through to closure and coordinating recovery. Use tools such as Tenable and Darktrace across cloud and wider IT infrastructure, supporting vulnerability management, threat intelligence and malware analysis, with on-call backup for emergency response.

Tenable · Darktrace