Founding AI engineer

Lucis; Île-de-France; Sur place; EUR 70 000 - 100 000; Plein temps

Résumé du poste

A health-focused tech company in France is seeking an AI & data engineer to build LLM-powered solutions that improve health outcomes. You will work closely with medical professionals to develop integrated AI agents, ensuring compliance with data regulations. Ideal candidates have 5+ years in ML production, strong Python skills, and an understanding of health data privacy. You will enjoy an entrepreneurial culture that values agility and ownership.

Prestations

Equity ownership

Personal development budget

Quarterly in-person retreats

Choice of hardware

Qualifications

• 5+ years in ML or LLM production.
• Experience with medical compliance.
• Entrepreneurial mindset and low ego.

Responsabilités

• Build a new version of Doctor AI.
• Translate medical requirements into insights.
• Architect knowledge graph and vector search layer.
• Design reasoning prompts and productionize API endpoints.
• Ensure compliance with HDS and GDPR.
• Drive Agile development and team collaboration.

Connaissances

Building and shipping ML or LLM systems

Fluency with Python

Hands-on with vector databases

Understanding of data privacy

English fluency

Outils

LangChain

GCP

Description du poste

The role

We’re looking for an AI & data engineer, engineer at heart, with entrepreneurial DNA and early stage 0→1 experience. It’s a plus if you are passionate about digital health and longevity.

You’ll shape our functional AI agents that could add healthy years to millions of lives:

• Own our AI agents doctor built on top of large language model, our vectorized infrastructure and thousand of users data.
• Collaborate with our medical team to translate complex clinical requirements into agents, and workflows. Deliver them the tools they need to
• Work with our third-party data providers and partners (labs, wearables, etc) to integrate the data and manage.
• Solve real-world health data, privacy, and UX puzzles at European scale.

Our company

We are building fast, for the long term.

1. Rigor without ego: audits, science, and code deserve the same high bar.
2. Default to action: small PRs, short feedback loops.
3. Radical ownership: you break it, you fix it (and write the doc).
4. Play long games: we’re building a 100-year company to help people live 100 healthy years.

What we offer

• Equity that matters: real ownership at the inflection point. With top-tier salaries.
• Budget for personal care, personal development, and health stipends (we pay your own Lucis tests).
• Quarterly in-person retreats in Europe. We repeat the YC experience every 3 months.
• Hardware of your choice, modern dev-tool stack.
• The chance to directly improve thousands of lives, starting with your own, through smarter preventive care. We are the average of the person we spend our time with.

What you will do

Core responsibilities

• Build the new version of our Doctor AI: an LLM-powered reasoning engine that drafts safe, evidence-based protocols a physician can sign off in minutes. You’ll be the technical owner who turns that vision into production reality.
• Work with our medical team to translate complex medical requirements into actionable insights for our users. Pair with our physicians to encode deterministic logic & decision trees.
• Architect the knowledge graph (PubMed, Examine, internal studies) and vector search layer (PGVector / Pinecone).
• Design chain-of-thought prompts that reason & cite. Productionize LLM endpoints on GCP (Vertex AI, Cloud Run, GPUs).
• Maintain strict compliance with HDS and GDPR regulations through robust security measures.
• Drive engineering rituals. Drive continuous improvement through Agile development practices and cross-team collaboration.

You’ll thrive here if you

• Have 5 + yrs building and shipping ML or LLM systems in production.
• Fluency with Python, LangChain/LlamaIndex or equivalent.
• Hands-on with vector databases, retrieval pipelines, and embeddings.
• Solid grasp of data privacy & medical compliance (GDPR, ISO 13485, HIPAA, or MDR).
• Entrepreneurial, low-ego mindset. You want to build a massive company with massive impact.
• Cautious about your health, actively doing sport. Care about health: you read PubMed abstracts for fun, or track your own biomarkers and metrics.
• Fluent in English. French is a bonus.
• You have led a team before. You remain hands-on more than 80% of your time in your current job.