Cyber Security Jobs

• 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

• 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

• Ireland
• Remote
• Senior

Security researcher role on CrowdStrike Intelligence's Advanced Research Team, developing automated solutions for large-scale data collection, running Internet-wide scans, operating and extending honeypots, and performing vulnerability research. Involves reverse engineering, patch analysis, and publishing research on the company blog or at conferences, alongside ad-hoc technical support for other intelligence teams.

CrowdStrike · Android · iOS +3

• London
• Hybrid · 4 days in office
• £500 – £550 pd
• Senior
• Contract

Hands-on contract role managing a broad estate of security tooling across network, email, endpoint and web, plus red team platforms for forensics, threat monitoring and deception. Day to day involves patching, upgrades, policy tuning, troubleshooting, and deploying and integrating new tools, including vendor replacements such as a new web proxy and email gateway. Works within an IT Security team at a financial services organisation, supporting audit and risk activity alongside engineering projects.

Python · Bash · PowerShell +5

• United Kingdom
• Remote
• Senior

Senior individual contributor researching how threat actors adopt, weaponize and exploit AI, from LLM-powered social engineering to attacks on agentic AI systems. Involves instrumenting telemetry to detect adversarial AI use, automating research workflows with LLMs and Python, and publishing deep-dive intelligence externally. Works alongside CTU researchers, SophosLabs analysts, MDR threat hunters and data scientists.

SIEM · SOAR · LLMs +1

• Manchester
• Hybrid
• £70,000 – £85,000 pa
• Senior

Own AWS infrastructure, CI/CD pipelines and observability for a new fintech platform, reporting to the CTO. Hands-on work spans Terraform IaC, Kubernetes, security controls, incident response and PCI-DSS/FCA compliance, with significant influence over tooling and scaling decisions in an early-stage team.

AWS · Terraform · Docker +1

• London
• Hybrid · 3 days in office
• £100,000 – £110,000 pa
• Mid-level · manages people

Leads a security operations function within a professional services firm, providing technical leadership across incident response, detection engineering and vulnerability management. Works with infrastructure, risk and third-party SOC providers, managing outsourced security suppliers and embedding security into technology projects. Hybrid role, three days a week in the City of London office.

Microsoft Azure · Entra ID · SIEM +1

• 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

• 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

• United Kingdom
• Remote
• Senior

Provide advanced technical support for Cortex XSIAM customers, triaging issues via ticketing, phone and remote sessions, and performing application- and OS-level troubleshooting. Work with developers to reproduce faults and implement permanent fixes, and with technical account managers to mitigate risks in customer environments.

Cortex XSIAM · Kubernetes · GCP +10

• Leeds
• Hybrid
• Senior

Operational owner of an enterprise identity platform, maintaining SailPoint IdentityIQ workflows, connectors and lifecycle processes while troubleshooting provisioning and integration issues across Okta and Microsoft Entra. Acts as the bridge between technical IAM delivery and BAU operations, handling audit evidence, JML automation and access reviews, and providing delegated guidance to team members across global regions.

SailPoint IdentityIQ · Okta · Microsoft Entra +3

• Norwich
• £20,409 pa
• Entry level
• Contract

Develops quantum-resilient security for connected and autonomous vehicular systems, evaluating post-quantum cryptographic techniques in resource-constrained 6G-enabled networks. Combines system modelling, simulation and algorithmic implementation to study trade-offs between security strength, computational overhead and communication latency, with adaptive key management and optimisation for low-latency, scalable deployment.

6G

• Stoke-on-Trent
• On-site
• £42,000 – £45,000 pa
• Senior
• Permanent

Hands-on role combining cyber-security and infrastructure engineering, monitoring threats, managing vulnerabilities and strengthening controls across identity, endpoint, network, patching and backups. Also provides senior technical expertise in Microsoft 365, Azure, Windows Server, Active Directory, VMware, firewalls and storage, guiding the wider IT team. Based on site five days a week in the Stoke-on-Trent area.

Microsoft 365 · Azure · Windows Server +2

• Stoke-on-Trent
• On-site
• £42,000 – £45,000 pa
• Senior
• Permanent

Hands-on role combining cyber-security and infrastructure engineering, reporting to the Head of IT. You'll monitor and respond to threats, manage identity, endpoint protection, patching and disaster recovery, while supporting Microsoft 365, Azure, Windows Server, Active Directory, VMware, networking and storage. Also provides technical guidance to the wider IT team.

Microsoft 365 · Azure · Windows Server +2

• Newcastle upon Tyne
• Hybrid
• £57,000 pa
• Mid-level
• Permanent

Protect business systems, infrastructure and data by monitoring, investigating and responding to cyber threats and incidents. Manage vulnerability remediation, patching and endpoint security while securing cloud, network and endpoint environments. Support governance, audits and compliance with standards such as ISO 27001 and Cyber Essentials Plus, working with internal teams and third-party suppliers.

SIEM · EDR · Microsoft Defender +3