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Senior Security Engineer

83zero LtdThe City, Central London🇬🇧United KingdomPosted 21 Jul 2026

Why This Role Stands Out

This Senior Security Engineer role offers a competitive GBP 80,000 - 90,000 salary and the flexibility of a hybrid work model, allowing you to shape the future of GenAI security and gain invaluable experience in a rapidly evolving field. If you are a proactive problem-solver with expertise in programming languages, API security, and a passion for innovation, you will thrive in this impactful position. Apply today to contribute to cutting-edge security solutions and grow your career within a reputable organization.

Quick Overview

Salary
£80k - £90k/yr
Work Type
Hybrid
Schedule
Full Time
Level
Mid Senior

Job Description

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.<br />Owning solutions that are expected to operate and perform at scale across the organisation.<br />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<br />Good oral and written communication skills<br />7+ years of relevant industry work experience<br />Experience of the full lifecycle of design, implementation and running of enterprise software solutions involving cross functional team collaboration<br />Expertise in a major programming language such as Python and/or Go, and associated tooling (Git, Maven, IDEs, Jenkins etc)<br />Expertise in designing and implementing secure APIs and libraries.<br />Experience in Generative AI, LLM frameworks, LLM prompt engineering and/or adversarial testing is a bonus.<br />Experience with Cyber engineering and Operations, which could include DevSecOps or MLSecOps.<br />Experience contributing to the architecture and design (architecture, design patterns, reliability, scaling) of new and current systems<br />Experience in containerized deployment (Kubernetes, OpenShift etc)

Skills

Generative AI
Git
Jenkins
Kubernetes
LLM
Python

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