Senior Security Engineer

83zero
London, City And County Of the City Of London, United Kingdom
Last week
£80,000 – £90,000 pa

Salary

£80,000 – £90,000 pa

Job Type
Permanent
Work Pattern
Full-time
Work Location
On-site
Seniority
Senior
Education
Degree
Posted
21 Jul 2026 (Last week)

Salary: £80,000 - £90,000 per annum

Location: London

What the role covers:

Designing, developing, optimizing, and enhancing a GenAI prompt security platform to protect firm AI/LLM-based applications from adversarial attacks and prompt injections.

Building and automating a security testing framework to validate protection mechanisms for various LLM use cases.

Owning solutions that are expected to operate and perform at scale across the organisation.

Collaboration with multiple stakeholders and partners across Engineering and Operations as well as partner teams within the wider Citi organisation, across different time zones.

Job Skills/ Qualifications:

Highly motivated self-starter with excellent interpersonal and problem-solving skills

Bachelor's degree or equivalent work experience

Good oral and written communication skills

7+ years of relevant industry work experience

Experience of the full lifecycle of design, implementation and running of enterprise software solutions involving cross functional team collaboration

Expertise in a major programming language such as Python and/or Go, and associated tooling (Git, Maven, IDEs, Jenkins etc)

Expertise in designing and implementing secure APIs and libraries.

Experience in Generative AI, LLM frameworks, LLM prompt engineering and/or adversarial testing is a bonus.

Experience with Cyber engineering and Operations, which could include DevSecOps or MLSecOps.

Experience contributing to the architecture and design (architecture, design patterns, reliability, scaling) of new and current systems

Experience in containerized deployment (Kubernetes, OpenShift etc)

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