Skills

Python Machine Learning TensorFlow Android

Job Specifications

Machine Learning Engineer (Python) – Health & Wellbeing Startup – Hybrid – up to £100k + package

develop’s Software Engineering team have been engaged exclusively to build a brand-new product team for an innovative health and wellbeing tech startup creating a next-generation wellness platform. The product is being built from the ground up with AI and machine learning embedded at its core, alongside a privacy-first philosophy that keeps user data on-device.

This is an opportunity to join early, shape the intelligent features that define the product, and work on ML that genuinely improves people’s lives, without compromising trust or privacy.

The Opportunity

Build on-device machine learning models that personalise user experiences
Work on LLM-driven features where prompt design and schemas directly impact product behaviour
Develop AI systems where privacy is a first-class concern, not an afterthought
Collaborate closely with iOS and Android engineers to optimise ML performance on-device
Influence the long-term AI and personalisation strategy from day one

What You’ll Be Doing

Designing and testing LLM prompts and schemas for cloud and on-device AI features
Developing on-device ML models that learn from user behaviour to personalise engagement
Building privacy-preserving ML pipelines using Core ML and TensorFlow Lite
Creating intelligent features that adapt content, recommendations, and user journeys
Working with mobile teams to optimise model performance, latency, and UX
Contributing to prompt engineering for conversational AI experiences
Exploring and evaluating emerging on-device LLM capabilities

What We’re Looking For

Commercial experience in machine learning model development and deployment
Strong skills in prompt engineering and working with LLMs
Hands-on experience with Core ML, TensorFlow Lite, or similar on-device frameworks
Understanding of personalisation and recommendation systems
Solid experience with Python and ML tooling
Strong interest in privacy-preserving ML techniques
Comfortable operating in early-stage environments with high ownership

Why This Role

Join a team building a brand-new product designed to genuinely help people
Backed by a proven tech incubator with a strong track record of launching successful products
Early-stage team with plans to scale to 14–15 people within the next 6 months
Work in a high-trust, no-ego culture where impact matters more than job titles
Competitive salary depending on experience, plus up to 10% performance-based bonus
Strong benefits package including:
29 days holiday (inclusive)
5% matched pension
Private healthcare
Paid subscriptions
Gym access
Monthly retail & entertainment vouchers

If you’re an ML Engineer who wants to build intelligent, privacy-first AI, have real ownership, and be part of an ambitious product journey from the very beginning, this is worth a conversation.

Apply or message for a confidential discussion.

About the Company

Welcome to develop. We are a leading contributor to the software engineering community and a disruptive recruitment business comprised of eight specialised brands: develop .NET, develop Java, develop Python, develop PHP, develop JavaScript, develop DevOps, develop Change, and develop Technology. At develop, we scale the software engineering teams that shape our world. Our commitment to quality is reflected in our three key USPs: 1. Specialised Knowledge: All our Consultants learn to code in the language they recruit fo... Know more