AI Fellow (Greater London)

Location: London (Hybrid, 3+ days in office)

Contract: 1-year fixed term (option to extend)

Reports to: Chief Operating Officer

About Hexarad

Hexarad is a multi-award-winning health technology company, led by senior clinicians and engineers. We’ve been recognised as the best teleradiology company in the UK and one of the best places to work in Tech. We are transforming the future of healthcare through our innovative medical imaging and diagnostic solutions. At the intersection of technology, medicine, and machine learning, our platform is designed to drive clinical excellence, accelerate diagnosis, and improve outcomes. Our mission is fast and accurate diagnosis for everyone, everywhere.

About the Role

This is an exciting opportunity to work at the intersection of cutting-edge technology and clinical practice. As an AI Fellow, you’ll work within a fast-paced, high-performing team to build the future of safe and effective clinical AI. You’ll collaborate closely with our own ML engineers, product managers, and clinical safety experts, contributing to every stage of our AI development lifecycle—from data curation to training, evaluation and implementation. You will work with internal and external experts to ensure our products remain compliant with relevant regulatory requirements.

We value curiosity, adaptability and execution. You’ll have the freedom to shape your work, contribute ideas, and grow in a dynamic environment with support from our talented team.

What You Will Do

• Clinical Data & Machine Learning
  • Collaborate with ML and software engineers to improve data pipelines and model performance.
  • Support data annotation, curation, and optimisation to ensure high-quality training datasets.
  • Apply and evaluate state-of-the-art ML models for real-world healthcare use cases.
• Model Evaluation & Alignment
  • Design and conduct evaluations of AI models for accuracy, bias, robustness, and safety.
  • Develop novel techniques for aligning model outputs with expectations.
  • Contribute to the academic conversation at the forefront of LLM evaluation and interpretability.
• Clinical Safety & Product Design
  • Embed safety principles across AI model development, deployment, and clinical integration.
  • Work with cross-functional teams to ensure compliant training, safe workflows, intuitive interfaces, and clinical safeguards.
  • Inform safety case documentation and risk assessment strategies.
• Collaboration & Delivery
  • Partner with researchers, engineers, and product managers to rapidly deliver impactful projects.
  • Contribute to strategic discussions on AI product development and clinical integration.
  • Communicate findings and insights clearly across both technical and clinical audiences.

You May Be a Good Fit If You:

• You are a doctor with a deep technical interest.
• Are deeply curious about how AI can improve care.
• You have a strong track record of delivering on projects.
• Thrive in fast-paced, collaborative environments.
• Are highly motivated and action-oriented.
• Communicate clearly and work well with others.
• Enjoy problem-solving and navigating ambiguity.

Bonus (but not required):

• Prior experience with clinical AI projects.
• Programming, data analysis, or ML knowledge (even if self-taught).
• Exposure to regulatory or safety frameworks in healthcare.

We welcome applicants from non-traditional backgrounds and those who may not meet all listed requirements. If you’re excited by the role and passionate about what we do, we encourage you to apply.

What We Offer

• The opportunity to work at the forefront of AI in healthcare.
• A collaborative and mission-driven team.
• Hybrid working model with at least 3 days/week in our lovely central London office.
• Great coffee and a beautiful workspace.
• Learning and development budget to support your growth.
• Regular team socials and events.
• A meaningful role making a tangible impact on healthcare outcomes.

Salary: £50,000 pa