AI Security Engineer

Undisclosed; Greater London; On-site; GBP 90,000 - 140,000; Full time

Job summary

Undisclosed in London is seeking an experienced AI Security Engineer to lead foundational security for an AI-driven hedge fund. This is the first security hire, with broad autonomy to shape strategy, processes and tooling across the firm.

You will set up threat modelling, secure DevSecOps, and select initial tooling. A hands-on engineering role with advisory reach across technical and non-technical stakeholders.

Qualifications

• 7+ years of experience in security engineering and DevSecOps practices.
• Strong Python tooling skills.
• Hands-on engineer with advisory capabilities across stakeholders.
• Genuine interest in AI/LLM themes and emerging risks.

Responsibilities

• Set up foundational AI security processes (threat modelling, scanning, DevSecOps).
• Find and fix vulnerabilities across AI tools and workflows, owning the process.
• Choose and stand‑up the initial security tooling for a fast‑growing AI-adopting business.
• Advise engineers and leadership on risk and practical steps as the resident SME.

Skills

Security engineering

DevSecOps

Python

Independent worker

AI/LLM awareness

Tools

Security tooling

Job description

AI Security Engineer, Hedge Fund, London [100% office-based]

We are working with a fast-growing fixed income hedge fund who are looking to hire a security engineer (AI) to support their expanding operation. There is subtle buzz about the firm, and it’s fair to say that they have a definite “start-up” feel to them. It is their first hire within the security landscape. Therefore, it's an exciting opportunity for someone who wants to be involved in the building out of security processes and to operate with a significant amount of autonomy.

AI tools are becoming embedded in how engineers and researchers work, creating unknown risks and potential leakages if not managed correctly. The fund's rapid growth, combined with the adoption of emerging technologies, means that now is the right moment to hire an experienced security specialist. This individual will define strategy, workflows, and perform analysis in order to identify vulnerability and establish scalable controls or remediations from the ground up. It's a hands‑on engineering role, with an advisory capacity, working across a broad range of internal and external stakeholders, technical and non-technical, as the resident, subject‑matter expert and to make recommendations and influence decisions.

Day-to-day responsibilities:

• Set‑up foundational AI security processes, including areas such as: threat modelling, scanning, DevSecOps from scratch.
• Find and fix vulnerabilities across AI tools and workflows, owning the entire process as the firm's first and only security hire.
• Choose and stand‑up the initial security tooling for a small, fast‑growing, AI‑adopting business.
• Advise engineers, leadership and external stakeholders on risk and practical next steps, as the resident specialist on the subject matter.

Requirements:

• 7+ years of comprehensive experience within the security engineering with strong understanding of DevSecOps practices.
• Stong engineering skills, particularly around Python for tooling.
• Experience working as a lone contributor or as part of a lean team, touching on many areas within the security remit.
• A sharp, current grasp and genuine interest in AI/LLM themes and emerging risks.

Preferred but not a requirement:

• Financial sector experience. Those within a start‑up / scale‑up environment outside of finance will be considered.
• Recognised certifications, such as CISSP, are desireable but not a pre‑requisite.
• Experience in a leadership role.

We can only respond to highly qualified candidates.