AI Research Scientist (Europe/UK - Remote)
SWORD HealthSince 2020, Sword has expanded across physical therapy, women’s health, cardiometabolic, and mental health, and is now moving beyond the session to a fully AI-native, 24/7 care program that brings physical activity, therapeutic exercise, psychotherapy, nutrition, and behavior change into one connected experience. More than 700,000 members across three continents have completed over 10 million AI sessions, helping 1,000+ enterprise clients avoid more than $1 billion in unnecessary healthcare costs. Backed by 42 clinical studies, 44+ patents, and more than $500 million raised from leading investors including Khosla Ventures, General Catalyst, and Founders Fund, Sword is defining a new standard for healthcare.
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Explorer (Level 1) — Uses AI daily to boost personal productivity
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Builder (Level 2) — Creates workflows and tools that elevate the whole team
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Integrator (Level 3) — Embeds AI into products and processes at scale
AI fluency is a core expectation at Sword Health. Every candidate is assessed against our three-level framework — be ready to share real examples of how AI is already part of how you work.
Every hire must demonstrate at least Level 1. The expected level will vary depending on the seniority of the role.
What you'll be doing:
- Design and execute research on LLM fine-tuning, alignment, and post-training methods (SFT, RLHF) tailored for clinical and therapeutic domains;
- Develop and improve foundational AI models that power our AI agents, spanning language, vision, speech, and multimodal systems;
- Contribute to the full model development cycle: dataset curation and annotation, architecture design, training, evaluation, and iteration;
- Collaborate across AI Engineering, Product, and Clinical teams to translate research breakthroughs into production systems that deliver patient care;
- Work towards long-term ambitious research goals, such as clinical memory, long-horizon planning, and safety validation, while identifying and delivering immediate milestones;
- Advance the field by publishing in top-tier AI venues and clinical journals, contributing to Sword's growing body of peer-reviewed research.
What you need to have:
Opens the company's application page
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