Senior AI Models Engineer
WHO WE ARE
Healthcare needs a better rhythm: one that keeps care continuous and deeply human. Heidi is building an AI Care Partner that works alongside clinicians to make that possible.
We’re a team of doctors, engineers, designers, researchers, and creatives building tools that help clinicians stay focused on what matters most: their patients.
In just 18 months, Heidi has given back more than 18 million hours to healthcare professionals — supporting 73 million patient visits in 116 countries. Today, more than two million patient visits each week are powered by Heidi worldwide.
Backed by nearly $100 million in funding, we’re growing in the US, UK, Canada, and Europe, partnering with leading health systems including the NHS, Beth Israel Lahey Health, and Monash Health.
THE ROLE
Working closely with our Engineering Manager, you’ll be a Senior AI Model Engineer on the Model Platform team. You are a technical leader responsible for solving our most critical model-related challenges.
Your mission is to drive significant breakthroughs in our model's capabilities, leading research and development efforts in areas like advanced fine-tuning (RLFT), alignment, and reasoning.
You will combine your deep ML intuition and research background to push the boundaries of what our models can do.
WHAT YOU’LL DO:
- Lead Model R&D Initiatives: Lead major research and development projects focused on step-changes in model performance, from ideation and experiment design to productionisation.
- Solve the Hardest Problems: Tackle the most ambiguous and challenging technical problems related to model behaviour, alignment, and safety.
- Build cutting-edge fine-tuned LLMs within Heidi using the latest tools and frameworks
- Partner with product, medical knowledge and design teams to automate prompt engineering, build agentic AI, create model evaluation frameworks.
- Develop Novel Techniques: Go beyond existing literature to develop novel fine-tuning or data generation te...