Founding ML Scientist (£80k-£120k + Equity) at VC-backed AI security platform

Jack & Jill/External ATS; Greater London; On-site; GBP 80,000 - 120,000; Full time

Job summary

A pioneering AI security platform is seeking a Founding ML Scientist to build adaptive AI security solutions and drive the product vision. Candidates will work alongside experts in a unique environment, establishing the control layer for AI systems in critical settings such as banks and hospitals. This role demands experience in training large language models and proficiency in cloud infrastructure. Competitive salary between £80k and £120k plus equity offered.

Qualifications

• Experience with RL with GRPO or fine-tuning with QLoRA.
• Comfortable with cloud environments like GCP/AWS.
• Ability to prioritize shipping and iteration.

Responsibilities

• Build adaptive AI security solutions that learn and evolve.
• Establish the control layer for AI systems.
• Drive product vision and technical strategy as a founding member.

Skills

Experience training LLMs with modern methods

Proficient in setting up multi-GPU training

Founding-engineer mindset

Job description

This is a job that we are recruiting for on behalf of one of our customers.

To apply, speak to Jack. He's an AI agent that sends you unmissable jobs and then helps you ace the interview. He'll make sure you are considered for this role, and help you find others if you ask.

Founding ML Scientist

Salary: £80k–£120k + Equity

Company Description: VC-backed AI security platform

Job Description

Join a pioneering team building the security layer for AI agents operating in critical environments like banks and hospitals. As a Founding ML Scientist, you'll define next-gen AI security, architect infrastructure for autonomous systems, and shape product vision. This is a chance to make a significant impact at the frontier of AI deployment, ensuring safe and reliable operation.

Location

London, UK

Why this role is remarkable

• Define and build the next generation of AI security that learns and adapts to protect autonomous agents.
• Work with a founding team of experts from intelligence, fintech, and infrastructure software.
• Enjoy full autonomy over architecture, tooling, and technical standards, shaping the company's engineering culture.

What you will do

• Build adaptive AI security solutions that learn and evolve with the agents they protect.
• Establish the control layer for AI systems making real-time decisions in high-stakes environments.
• Drive product vision and technical strategy as a core founding team member.

The ideal candidate

• Experience training LLMs with modern methods like RL with GRPO or fine-tuning with QLoRA.
• Proficient in setting up multi-GPU training and inference infrastructure in cloud environments (GCP/AWS).
• Possesses a founding-engineer mindset, comfortable with ambiguity and prioritizing shipping and iteration.

How to Apply

To apply for this job speak to Jack, our AI recruiter.

Step 1. Visit our website
Step 2. Click 'Speak with Jack'
Step 3. Login with your LinkedIn profile
Step 4. Talk to Jack for 20 minutes so he can understand your experience and ambitions
Step 5. If the hiring manager would like to meet you, Jack will make the introduction.