Cyber Security Engineer - Cyber & Autonomous Systems Team

AI Security Institute

Greater London

Hybrid

GBP 90,000 - 130,000

Full time

3 days ago

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Job summary

AI Security Institute seeks exceptional cybersecurity experts to work on frontier AI security. You’ll design cyber ranges, run pre-deployment tests, and validate model behaviours, collaborating with engineers and researchers who prioritise impact and autonomy in a mission-driven setting.

Role offers exposure to world-class evaluations, mentoring, and the chance to influence safety standards for frontier AI. Hybrid work from London with global partnerships and strong government ties.

Qualifications

Strong Python skills with experience writing scripts for automation or security tooling.
Proven experience in at least one of the following areas of cybersecurity red-teaming: Penetration testing, Cyber range design, Competing in or designing CTFs, Developing automated security testing tools, Bug bounties, vulnerability research, or exploit discovery and patching.

Responsibilities

Design cyber ranges and CTF-style challenges for automatically grading AI system performance on cybersecurity tasks.
Build agentic scaffolding to evaluate frontier models, equipping them with tools such as network packet capture utilities, penetration testing frameworks, and reverse engineering/disassembly tools.
Design metrics and interpret results of cyber capability evaluations.
Work alongside other engineers to ensure evaluation environments are robust and scalable.
Write reports, research papers and blog posts to share findings with stakeholders.

Skills

Python scripting

Cybersecurity red-teaming

Penetration testing

CTF design

Cyber range design

Automated security testing tools

Bug bounty research

Open-source tooling

Tools

Packet capture tooling

Penetration testing frameworks

Reverse engineering tools

Job description

About the AI Security Institute

The AI Security Institute is the world's largest and best-funded team dedicated to understanding advanced AI risks and translating that knowledge into action. We’re in the heart of the UK government with direct lines to No. 10 (the Prime Minister’s office), and we work with frontier developers and governments globally.

We’re here because governments are critical for advanced AI going well, and UK AISI is uniquely positioned to mobilise them. With our resources, unique agility and international influence, this is the best place to shape both AI development and government action.

The deadline for applying to this role is 11th October 2026, end of day, anywhere on Earth.

About the team

AI capabilities in cybersecurity and autonomy are advancing faster than at any point in history. Frontier models can now work through multi-step network intrusions, discover and exploit software vulnerabilities, and carry out long-horizon technical tasks with increasing independence. These are extraordinary tools for scientific and economic progress, but also have the potential for serious harm if misused or deployed without adequate oversight, as seen in the recent cybersecurity incidents. The team evaluates the capability of both frontier and open-weight AI models in cybersecurity, autonomy and AI R&D, ensuring the UK government and its partners have an accurate view of risks and capabilities. We use realistic cyber ranges and a large CTF suite for our evaluations, run pre-deployment testing of frontier models, and collaborate with our partners across UK government, frontier labs, and NCSC.

Role Description

We are looking for exceptional cybersecurity experts at all experience levels, from junior through to senior or staff, who want to work at the forefront of frontier AI security.

In this role, you’ll work with cutting-edge technologies on research problems with real-world impact, and receive mentorship and coaching from your manager and the technical leads on your team. Your day-to-day work might include building state-of-the-art evaluations (e.g., cyber ranges), running pre-deployment testing exercises (e.g., Claude Mythos Preview), validating novel model behaviours (e.g., models cheating in evaluations), and answering timely research questions (e.g., the capabilities of open-weight models). You would be working alongside engineers and researchers who care deeply about the impact of their work, take pride in their craft, and have a high level of autonomy.

Core Responsibilities

Evaluation Design & Development (60%)
- Design cyber ranges and CTF-style challenges for automatically grading AI system performance on cybersecurity tasks
- Build agentic scaffolding to evaluate frontier models, equipping them with tools such as network packet capture utilities, penetration testing frameworks, and reverse engineering/disassembly tools
- Design metrics and interpret results of cyber capability evaluations

Infrastructure engineering (30%)
- Work alongside other engineers to ensure evaluation environments are robust and scalable

Research & Communication (10%)
- Write reports, research papers and blog posts to share findings with stakeholders
- Keep up-to-date with related research taking place in other organisations
- Contribute to AISI's broader understanding of AI cyber risks

Example projects

Onboard and integrate new cyber ranges into our evaluation pipeline

Conduct agent research to improve the cyber capabilities of our agents

Improve grading and scoring methodologies for automated evaluation tasks

Integrate defensive telemetry and simulated users into ranges to increase their realism

Collaborate with government partners on joint research publications

Impact

Your work will directly shape the UK government’s understanding of AI cyber capabilities, inform safety standards for frontier AI systems, and contribute to the global effort to develop rigorous evaluation methodologies. The evaluations you build will help determine how advanced AI systems are assessed before deployment.

Who we’re looking for

We’re flexible on the exact profile and expect successful candidates will meet many (but not necessarily all) of the criteria below:

Essential

Strong Python skills with experience writing scripts for automation or security tooling

Proven experience in at least one of the following areas of cybersecurity red-teaming:
- Penetration testing
- Cyber range design
- Competing in or designing CTFs
- Developing automated security testing tools
- Bug bounties, vulnerability research, or exploit discovery and patching

Strong interest in helping improve the safety of AI systems

Desirable

Familiarity with virtualisation technologies such as Proxmox VE and infrastructure-as-code approaches to enable reproducible test environments to be rapidly spun up for testing

Ability to communicate the outcomes of cybersecurity research to a range of technical and non-technical audiences

Familiarity with cybersecurity tools such as network packet capture utilities, penetration testing frameworks, and reverse engineering/disassembly tools

Active in the cybersecurity community with a track record of keeping up to date with new research

Previous experience building or measuring the impact of automation tools on cyber red‑teaming workflows

What We Offer

Impact you couldn’t have anywhere else

Incredibly talented, mission-driven and supportive colleagues.

Direct influence on how frontier AI is governed and deployed globally.

Work with the Prime Minister’s AI Advisor and leading AI companies.

Opportunity to shape the first & best‑resourced public‑interest research team focused on AI security.

Resources & access

Pre-release access to multiple frontier models and ample compute.

Extensive operational support so you can focus on research and ship quickly.

Work with experts across national security, policy, AI research and adjacent sciences.

Growth & autonomy

If you’re talented and driven, you’ll own important problems early.

5 days off and annual stipends for learning and development, and funding for conferences and external collaborations.

Freedom to pursue research bets without product pressure.

Opportunities to publish and collaborate externally.

Life & family*

Modern central London office, or where applicable, option to work in similar government offices in Birmingham, Cardiff, Darlington, Edinburgh, Salford or Bristol.