Cyber Security Jobs

eFinancialCareers · Manchester · £100,000 pa

Senior technical security consultant acting as a security architect and technical authority across complex cybersecurity programmes in UK healthcare, defence, central government and the public sector. Leads security architecture reviews, threat modelling and risk assessments, advises on secure-by-design controls across cloud, network, infrastructure and application environments, and mentors security practitioners while engaging senior stakeholders.

eFinancialCareers · London · £85,000 – £105,000 pa

Senior technical security authority supporting UK public sector, healthcare, defence and central government clients. Leads security architecture reviews, assesses cloud, network, infrastructure and application controls, and conducts threat modelling, risk and vulnerability assessments. Mentors practitioners and translates complex security risks into business-focused recommendations for senior stakeholders.

CrowdStrike · Reading

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.

CrowdStrike · Aarhus, Denmark

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.

HAYS Specialist Recruitment · London · £90,000 – £115,000 pa

Lead complex DFIR engagements while managing a regional team of six to seven professionals, spending around 70% of time on hands-on technical delivery. Direct ransomware and business email compromise investigations across endpoint, cloud and on-premises environments, acting as senior escalation point and advising clients, legal advisers and insurers.

10Nex Consultancy · Grange, Greater London · £55,000 – £60,000 pa

Conducts penetration tests across web applications, infrastructure, cloud environments and APIs, with exposure to Active Directory, AWS/Azure/GCP and tools like Burp Suite, Kali Linux, Nmap and Metasploit. Owns testing engagements end to end, writes clear reports and advises clients on remediation, with scope to move into red teaming, assumed breach and AI security.

NCC Group · Manchester

Senior hands-on technical authority for a heavily customised ServiceNow platform underpinning cybersecurity managed services. Builds scoped applications, custom data models, advanced server- and client-side scripting and integrations with security tooling, working directly with customers on requirements and escalations. Sets technical standards, owns code review and architectural direction, and mentors the wider development team.

Amazon · London

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.

Palo Alto Networks · London

Senior overlay role acting as lead technical strategist for BT across the UK and EMEA, driving joint technical alignment and co-architecting security offerings. Involves positioning NetSec, SASE, Zero Trust and Cortex CloudSecOps into BT's managed service architecture, leading complex POCs and demos, and providing targeted post-sales advisory. Requires executive-level engagement with BT leadership and close co-selling with internal sales, with around 30% UK travel.

University of Exeter · Exeter · £21,805 pa

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.

Hays Technology · Chessington

Lead the IT function across a multi-site FMCG business, assessing the existing technology estate and transitioning away from services provided by the former parent group. Own infrastructure, cloud, enterprise applications (notably D365 Business Central), cybersecurity governance and supplier relationships, while building a roadmap and developing the IT team.

Amazon · London

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.

Vantage · Capenhurst · £55,000 – £65,000 pa

Own and improve cloud-hosted infrastructure, Azure DevOps CI/CD pipelines and Terraform-based infrastructure as code, while supporting BAU operations and security controls. Work closely with software engineers to streamline deployments and reduce their infrastructure burden, with scope to shape automation and governance practices.

People First · London · £70,000 – £80,000 pa

Assist the Head of IT in running a London bank branch's IT operations, covering infrastructure, network and core system maintenance, production operations, and information security. Manage changes, incidents and problems, coordinate vendors, support disaster recovery and business continuity, and help drive digitalisation projects. Requires fluent Mandarin and English.

University of Bristol · Bristol · £40,704 – £59,390 pa

Conducts novel academic and high-TRL research into agentic AI security assurance for autonomous network management, characterising threat landscapes, running adversarial testing, and building runtime decision validation and dynamic trust scoring. Develops automated mitigation such as rollback and agent isolation, with experimental evaluation on a partner's agentic AI platform and the JOINER national open-networks testbed.