Cyber Security Jobs

• United Kingdom - Field
• Senior

Designs, builds, tests and operates significant capabilities of the Agentic Trust solution within R&D, delivering complex features across the full software development lifecycle. Develops secure APIs, services, integrations and SDKs, mentors less experienced developers, and troubleshoots production issues. Works with Product, Architecture and Security peers to keep the platform secure, scalable and reliable.

Kubernetes · MCP · LLM

• United Kingdom - Field
• Director · manages people

Leads the R&D organisation building the Entrust Agentic Trust platform, translating a four-plane reference architecture into development strategy, operating model and roadmap. Accountable for engineering execution, quality, security and delivery predictability across cloud-native services, APIs, SDKs, policy and authorization components, and tamper-evident evidence systems. Partners with Product, Architecture, Security and Cloud Operations, and builds a multi-discipline software organisation.

FIPS 140-3 · Common Criteria · SOC 2 +4

• United Kingdom
• Remote
• Mid-level

Hands-on SRE role focused on CrowdStrike's Commercial Cloud, covering operational ownership of availability, latency, throughput, monitoring, incident response and capacity planning across thousands of bare metal servers and VMs. Involves building automation and tooling in C++, Java, Python or Go, working with monitoring stacks like Prometheus, Grafana and ELK, and joining a global on-call rotation.

CrowdStrike · ELK · Prometheus +15

• United States
• Remote
• US$140,000 – US$220,000 pa
• Senior

Builds and operates core systems for the Falcon Complete team, designing reliable, scalable services that help security analysts triage and remediate threats at scale. Works in Golang, Python, JavaScript, C++, or Java across microservices, data pipelines, Kafka/Kinesis, Docker and Kubernetes, with on-call rotations. Distributed, asynchronous team spanning the US and UK.

AWS · Azure · GCP +6

• Dublin, Ireland
• Hybrid
• Senior · manages people
• Permanent

Lead a small defensive security team accountable for detection, investigation and response across cloud, endpoint, identity and SaaS estates, while managing an outsourced monitoring partner and driving measurable improvement. The role owns serious incident response, detection tuning and a plan for AI and automation in the SOC, working alongside a separate leader focused on engineering and architecture.

Microsoft

• 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

• Cobridge
• On-site
• £45,000 – £55,000 pa
• Senior · manages people
• Permanent

Owns the day-to-day technology environment for an engineering and manufacturing business, covering infrastructure management, systems and database administration, cybersecurity, ERP and global support. Leads and mentors an IT team, runs projects such as system upgrades and software implementations, manages budgets and vendors, and ensures compliance and disaster recovery across UK and international offices.

Microsoft Dynamics AX · Jira · Confluence

• Hatfield
• £50,000 – £60,000 pa
• Mid-level

Hands-on IT Manager role owning the IT function across multiple UK sites for a growing engineering business. Day to day you maintain the Microsoft environment, support ERP systems and SQL Server databases, automate manual processes, manage external suppliers and the IT budget, and ensure security, backup and disaster recovery. Considerable autonomy to shape IT strategy and develop in-house solutions.

Microsoft SQL Server · Microsoft 365 · Azure +2

• Bristol
• £45,641 – £59,390 pa
• Mid-level
• Contract

Carry out innovative research and teaching in cyber security, focusing on software or systems security, across undergraduate, postgraduate and CDT programmes. Contribute to the Bristol Cyber Security Group's research activities and act as an active member of the group, School and Faculty. Fixed-term post until 31/01/2028 or the substantive postholder's return.

• Washington
• £50,000 – £60,000 pa

Support and improve business systems, processes, reporting and technology solutions across a growing manufacturing company. Deliver digital transformation initiatives including automation and AI-enabled improvements, while maintaining databases, software applications, dashboards and integrations. Provide user support, training and technical guidance, ensuring systems stay secure and compliant.

Microsoft 365 · SQL Server · Microsoft

• London
• Hybrid
• Senior
• Permanent

Client-facing consulting role leading end-to-end security engagements across security architecture, cloud security, DevSecOps, application security and security operations. You'll run workshops, design controls in AWS/Azure/GCP, produce risk-based deliverables and help identify follow-on work, contributing to proposals and account growth.

AWS · Azure · GCP +7

• London
• Lead

Owns product strategy, roadmap and commercial model for a new publicly trusted certificate authority, spanning ACME issuance, certificate lifecycle automation, revocation and Certificate Transparency. Works across engineering, compliance, legal and go-to-market on high-consequence infrastructure, with an ACME-first, automation-first and post-quantum-ready design.

AWS Certificate Manager · AWS Private CA · Google Trust Services +7

• London
• Remote
• £40,000 – £50,000 pa
• Mid-level

Build and improve web applications for a cyber security business, working across the full stack with React interfaces and Node.js services and RESTful APIs. You'll own tasks from requirement to delivery, embed application security, and use AI-assisted development tools daily, joining a small team where you can influence technical and architectural decisions.

React · Node.js · Git +7

• Exeter
• £21,805 pa
• Entry level
• Contract

A PhD project investigating end-to-end guarantees for security systems by verifying translations between programs and the representations used by security protocols. The work centres on Isabelle/HOL, developing semantic models and compilation techniques, with zero-knowledge proof systems such as STARK-style protocols as a key application area. It spans formal methods, programming languages, cybersecurity and cryptography, with scope to shape the direction around the student's interests.

Isabelle/HOL · STARK

• Liverpool
• Hybrid · 3 days in office
• £66,000 – £76,000 pa
• Director · manages people
• Permanent

Lead the day-to-day delivery of technology services supporting research across a Not For Profit organisation, setting priorities for the Technology department. Act as strategic business partner for research, translating academic requirements into a prioritised Research IT roadmap and leading governance and investment cases. Work with Infrastructure, Cyber Security, Applications and Data teams, evaluating emerging technologies such as AI, cloud and advanced computing.

AI · Cloud · Advanced Computing +3