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Head of International Security

Scale AILondon, UKHorizontals EPD
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Salary
Not listed
Job type
Full-time
Posted
15 Jul 2026
Status
Open · checked 7d ago

About this role

Scale AI is seeking a Head of International Security based in London, UK, to direct security strategies across non-US enterprise and public sector affairs. This leadership role suits an experienced cybersecurity professional ready to scale defensive maturity within frontier artificial intelligence and national security environments.

Role Overview

Scale AI sits at the intersection of national security, enterprise software, and frontier artificial intelligence. The Head of International Security will own and unify the security strategy across non-US affairs, covering Global Public Sector and non-US Enterprise deals. This position involves driving execution, customer engagements, and compliance with frameworks such as GDPR, ISO27001, UK Cyber Essentials Plus, the EU AI Act, NIS2, and regional sovereignty rules. Working closely with the global secure-by-default architecture set by the Head of Security, the individual will manage a security surface area spanning internal systems, external products, distributed contributors, and high-assurance government environments.

Key Responsibilities

Execute Scale's multi-year secure-by-default roadmap across international markets, translating regional regulations into concrete engineering controls.
Own regional execution of identity, fine-grained role-based access control, secrets management, CI/CD hardening, logging, and infrastructure protection.
Stand up high-fidelity detection and response capabilities meeting local time zone coverage and regulatory expectations.
Protect customer data, proprietary datasets, and AI assets across regional deployments, including in-region processing and customer-managed encryption keys.
Address AI-specific attack surfaces like prompt injection, data exfiltration, tool abuse in agentic workflows, and model integrity risks.
Partner with Product and Operations to implement auditability, privilege governance, and behavioural anomaly detection to mitigate insider risk.
Serve as the lead security partner in international enterprise and public sector engagements, running security reviews and shaping trust narratives across the UK, EU, MENA, and beyond.

Requirements

8+ years of experience in cybersecurity, covering security engineering, product security, detection and response, or cloud security.
At least 4 years of experience leading or formally mentoring engineers in high-growth or enterprise environments.
Demonstrated success building and scaling security programs that materially improve risk posture.
Strong technical depth in cloud-native security across AWS, GCP, or Azure, alongside IAM, Zero Trust, infrastructure security, and secure SDLC practices.
Hands-on familiarity with GDPR, ISO 27001, SOC 2, UK Cyber Essentials Plus, NIS2, and the EU AI Act.
Experience managing insider risk or securing environments with large third-party, contractor, or marketplace user populations.
Right to work in the UK.
Comfort with regular travel and willingness to undergo vetting for country-specific clearances as required by customer engagements.

Nice to Have

Experience securing AI and ML platforms, LLM-based systems, or agentic applications.
Familiarity with AI threat vectors like training data poisoning, prompt injection, and plugin abuse.
Experience operating at the intersection of enterprise SaaS and government or national security customers.
Working knowledge of GCC sovereign compliance and privacy regulations, including UAE DESC CSP and Qatar NCSA NISCF/NIA.
Proven ability to build secure-by-design multi-tenant systems serving Fortune 500 or FTSE 100 clients across multiple regulatory regimes.
Experience leading red-teaming, adversarial testing, or offense-informed defense programs.
Active or eligible for UK clearance (SC or DV), NATO clearance, or an equivalent in an allied jurisdiction.

Skills and Tools

AWS
GCP
Azure
LLMs
IAM and Zero Trust architecture
Secure SDLC practices
Infrastructure protection and CI/CD hardening

About the Company

Scale AI develops reliable artificial intelligence systems for major decisions by providing high-quality data and full-stack technologies. The company powers leading models and helps global enterprises and governments build, deploy, and oversee impactful AI applications. Scale AI collaborates with industry leaders, Meta, Ernst & Young, Mayo Clinic, Time Inc., the Government of Qatar, and U.S. government agencies like the Army and Air Force. The company is an inclusive and equal opportunity workplace committed to diversity and reasonable accommodations.

How to Apply

Interested candidates should visit the official Scale AI careers page to submit an application and review further details.

Skills and tech stack

AWSGCPAzureLLM

Questions candidates ask

Where is this job located?

This position is located in London, UK, and is not a remote role. Regular travel and potential country-specific security clearance vetting are required.

What level of experience is required for this role?

Candidates must have 8+ years of experience in cybersecurity, including at least 4 years leading or formally mentoring engineers in high-growth or enterprise environments.

What regulatory frameworks must the candidate be familiar with?

Hands-on familiarity is required for GDPR, ISO 27001, SOC 2, UK Cyber Essentials Plus, NIS2, and the EU AI Act.

Are there specific technical skills needed for cloud environments?

Yes, strong technical depth in cloud-native security across AWS, GCP, or Azure is required, alongside IAM, Zero Trust, and infrastructure security.

Is a UK work authorization necessary?

Yes, applicants must have the right to work in the UK and be comfortable traveling regularly and pursuing required security clearances.

Ready to apply?

The application is on the official Scale AI careers page.

Apply on company site