Head Of Security

What you'll be doing

  • Own the security strategy and roadmap across application, cloud, corporate, and AI security.
  • Build and lead the security team, hiring across AppSec, cloud, and GRC as the company grows.
  • Embed secure-by-design practices into engineering, including threat modelling, secure SDLC, and pentest and bug bounty programs.
  • Own compliance with ISO 27001, SOC 2, emerging AI standards such as ISO 42001, GDPR, and HIPAA readiness for healthcare customers.
  • Act as the security voice to enterprise customers through due diligence, executive briefings, and contractual security terms.
  • Lead incident response and report security risks to the executive team and board.
  • Set guardrails for AI usage including LLM risks, data handling, and vendor reviews.

Requirements

  • 10+ years in security, including 3+ years leading the security function at a high-growth tech or SaaS company.
  • Strong technical expertise in at least one area: AppSec or cloud security (GCP preferred), with broad knowledge to lead across domains.
  • Proven track record delivering ISO 27001 and/or SOC 2 as the accountable owner.
  • Experience building and managing security teams from early stages.
  • Credibility with engineers, enterprise customers, and the board, with a pragmatic approach enabling speed over blocking.

Nice to have

  • Experience securing ML/AI platforms or data-intensive products.
  • Experience in regulated sectors such as healthcare, life sciences, or automotive.
  • Background as a hands-on engineer before transitioning into leadership.

Perks and benefits

  • Competitive salary and meaningful equity in a high-growth startup.
  • Strong in-person culture with most of the team working in the London office 4+ days per week.
  • 25 days annual leave plus UK public holidays.
  • Annual learning and development budget.
  • Opportunity to travel for customer visits, events, and conferences across the UK and Europe.
  • Daily company lunches.
  • Monthly socials and bi-annual team offsites.
AI Summary ✨

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