This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.
She will pick the best candidates from Jack's network.

The next step is to speak to Jack.

AI/ML Engineer

Company Description: Global consumer healthtech platform

Job Description:
You will join a specialized AI Platform team to build and scale shared infrastructure enabling safe, efficient AI integration across a massive global product. The role involves fine-tuning large language models, optimizing MLOps pipelines, and developing evaluation frameworks to ensure medical safety and high performance for over 70 million monthly users worldwide.

Location: London, UK

Why this role is remarkable:

• Work on a product with over 500 million downloads, directly impacting the health and wellness of a massive global user base.

• Join a unicorn-valuation organization backed by top-tier global private equity and venture capital firms.

• Lead the transition into a privacy-first, AI-powered future by building the central infrastructure that powers every product team's AI initiatives.

What you will do:

• Develop, fine-tune, and optimize proprietary and open-source large language models for domain-specific health applications.

• Design and maintain automated pipelines for model training, evaluation, and deployment across diverse AI workloads.

• Build LLM evaluation frameworks to measure model safety, medical accuracy, and overall performance at scale.

The ideal candidate:

• Has 4+ years of professional experience building and deploying production-grade AI/ML systems within a cloud environment.

• Possesses deep engineering experience with LLM infrastructure, including fine-tuning techniques like LoRA and SFT.

• Is proficient in Python and modern ML tools such as Databricks, MLflow, and experiment tracking systems.

Who are Jack & Jill?

Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.

And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.

Next steps

Step 1. Visit our website
Step 2. Click 'Talk to Jack'
Step 3. Talk to Jack so he can understand your experience and ambitions
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role
Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction
Step 6. If not, Jack will find you excellent alternatives. All for free

We never post fake jobs

This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
We appreciate this can make them look a bit suspect, but there isn't much we can do about it.

Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.