Senior Information Security Officer (£65K – £85K + Equity + Bonus) at Definely

Senior Information Security Officer (£65K – £85K + Equity + Bonus) at Definely

Full-Time 65000 - 85000 £ / year (est.) No working from home possible
J

At a Glance

  • Tasks: Lead ISO/SOC compliance and manage risk assessments for an AI-driven platform.
  • Company: Definely is a Series B LegalTech startup backed by Microsoft, Google, and Octopus Ventures.
  • Benefits: Enjoy a salary of £65K – £85K, equity, a 16% performance bonus, and private healthcare.
  • Other info: This role is based in London, UK, and offers flexible work options.
  • Why this job: Shape security strategy for a category-defining AI platform with top-tier investors.
  • Qualifications: Proven experience in securing SaaS products and delivering ISO 27001 or SOC 2 certifications.

The predicted salary is between 65000 - 85000 £ per year.

Salary: £65K – £85K + Equity + Bonus

Company Description: Series B LegalTech startup backed by Microsoft, Google, and Octopus Ventures.

Job Description: You will lead the security posture for an AI-driven platform trusted by the world’s elite law firms and corporations. Balancing governance and technical execution, you’ll maintain ISO/SOC compliance, secure LLM-enabled product features, and scale internal IT operations. This is a high-impact role securing sensitive data for 150+ global enterprise customers.

Location: London, UK

Why this role is remarkable:

  • Shape the security strategy of a category‑defining AI platform backed by top‑tier investors like Microsoft and Octopus Ventures.
  • Direct influence over AI/LLM security standards as you lead the transition toward ISO/IEC 42001 certification.
  • Exceptional benefits package including a 16% performance bonus, equity, private healthcare, and a flexible "work from anywhere" month.

What You Will Do:

  • Own and evolve the Information Security Management System (ISMS) while leading ISO 27001 and SOC 2 Type II audits.
  • Partner with engineering to embed secure SDLC practices, performing threat modeling and design reviews for AI‑driven product features.
  • Manage company‑wide risk assessments, vendor security reviews, and day‑to‑day IT operations including device management and onboarding.

The ideal candidate:

  • Proven experience securing SaaS products, including a strong track record of delivering ISO 27001 or SOC 2 certifications.
  • Technical expertise in cloud security (Azure or AWS) and a deep understanding of securing LLM‑based systems and AI applications.
  • Strong background in IT operations and identity management, holding certifications such as CISSP, CISM, or ISO 27001 Lead Auditor.

Senior Information Security Officer (£65K – £85K + Equity + Bonus) at Definely employer: Jack & Jill

Definely, located in London, UK, offers an exceptional benefits package including private healthcare and a flexible work-from-anywhere month. The team is focused on securing sensitive data for over 150 global enterprise customers, making a significant impact in the LegalTech industry.

J

Contact Details:

Jack & Jill Recruitment Team

We think you need these skills to ace Senior Information Security Officer (£65K – £85K + Equity + Bonus) at Definely

Information Security Management System (ISMS)
ISO 27001
SOC 2 Type II
Cloud Security (Azure or AWS)
Secure Software Development Life Cycle (SDLC)
Threat Modeling
Design Reviews