Medical content lead in London

Making preventive health the default for every human in Europe.

The mission at Lucis is to believe healthcare should be preventive, not reactive. We're building the OS for human longevity to help people add more healthy years to their lives.

The role involves analysing 110+ biomarkers, building clinical protocols, and delivering them through an AI doctor that millions of people will eventually trust with their health. Every word a user reads inside Lucis — every biomarker explanation, every protocol rationale, every nudge from our AI coach — has to be medically right and feel like it was written by a clinician who actually cares.

As our Medical Content Lead, you partner directly with the Product Lead to make every piece of clinical content inside the product accurate, useful, and unmistakably Lucis. You also feed the AI team the clinical knowledge our agents reason over, support marketing with medically rigorous content, and keep us at the frontier of longevity and functional medicine research.

This isn't a writing-only role. You think like a doctor, ship like an operator, and treat AI as a daily collaborator.

What you could own:

• In-product medical content — biomarker explanations, protocol rationales, AI coach, in-product biological narrative (Biomarker results, systems, action plans).
• AI knowledge curation — work with the AI team to translate clinical reasoning into structured knowledge our agents can use: prompts, knowledge curation, expert ranges, protocol logic.
• Clinical research watch — keep Lucis up to date on longevity, functional medicine, and preventive health: new evidence, emerging protocols, biomarker science. Brief the Product Lead and the broader team on what matters.
• Marketing medical support — work with the marketing and design team on newsletters, landing pages, and campaigns that need clinical depth. You're not the marketer, but nothing medical ships without your sign-off.

About you:

You're a doctor who believes the future of medicine is preventive, personalized, and powered by AI. You want your clinical knowledge to reach millions of people, not 20 patients a week. You've already integrated AI deeply into your own workflow and you can't imagine working any other way.

You thrive in fast-moving environments, learn by doing, and value feedback as a way to continuously improve.

You’ll fit in well if:

• You have an MD (or equivalent), with real exposure to longevity, functional, or preventive medicine.
• You have deep expertise or genuine passion in at least one field adjacent to what we do — sports medicine, nutrition, endocrinology, hormonal health, gut health, sleep, performance, or another preventive-medicine vertical.
• You’ve worked in a startup before.
• You’ve written clinical content before — patient-facing, practitioner-facing, or both.
• You use AI tools daily and natively.
• You think in systems, not one-offs.
• You’re genuinely obsessed with health — you track your own biomarkers, follow the longevity literature, and are frustrated that healthcare is still reactive.
• You’re fluent in French and English — both spoken and written, at clinical-publication quality. Spanish is a plus.

We might not be a fit if:

• You think about medicine conventionally — if 'the labs are normal, you're fine' feels right to you, our preventive, longevity-first approach will feel wrong.
• You’re not particularly comfortable with technology and prefer to stay away from new tools.
• You’re not comfortable working hands-on with AI as your daily collaborator.
• You’re not comfortable being proactive and seeing further than 'your role.'
• You’ve only worked in large, well-established companies or pure clinical practice.
• You need a clearly defined role with stable responsibilities.
• You prioritise predictable 9–5 work over mission intensity.

Practical details:

• Format: Part-time or full-time — we're flexible for the right person.
• Location: Remote anywhere in Europe. We'd love you to come work with us in our Paris hub on a regular basis.
• Languages: French and English required, Spanish is a plus.

The process:

• Intro call (20 min): culture & role fit.
• Technical interview (30-60 min).
• At-home case study: hands-on project, delivery in 2 days.
• Deep dive and team chat, on-site (1.5 - 3 hours).
• Reference calls.

How we work:

We work together from our Paris hub. We're passionate about what we're building and believe the fastest way to create something exceptional is side by side. We're open to relocation support for the right individuals, and we welcome missionaries who travel to work with us in Paris on a regular basis.

Rigor without ego: Audits, science, and code all deserve the same high bar.

Radical ownership: Feedback loops are short; everyone contributes to building the best version of Lucis.

Velocity over perfection: We ship daily and prefer a good decision today over a perfect one next week.

At Lucis, AI isn't just our product, it's our engine. 100% of our teams are equipped with the best AI agents. You have carte blanche to explore and automate everything that can be, so you can focus exclusively on high-value work.