Senior Data Engineer Python/GCP (x/f/m)

Your Impact We are looking for a Senior Data Engineer to join the AI Team working on our AI Medical Companion . Your mission will be to build and optimize the data foundations that power safe, scalable, and impactful AI models. You will work on data infrastructure for LLM, VLM, and RAG-based systems , ensuring our engineers and data scientists can train, evaluate, and deploy AI models efficiently on high-quality, well-structured, and compliant data.

Your work will directly support health professionals in delivering better care while improving their work-life balance, ultimately impacting 80 million patients and 400,000 healthcare professionals across Europe. Working in the tech team at Doctolib means building innovative products and features to improve the daily lives of care teams and patients.

What You'Ll Do

Your

Responsibilities

include but are not limited to: Design, build, and maintain scalable data pipelines on Google Cloud Platform (GCP) for AI and machine learning use cases Implement data ingestion and transformation frameworks that power Retrieval systems and training datasets for LLMs and multimodal models Architect and manage NoSQL and Vector Databases to store and retrieve embeddings, documents, and model inputs efficiently Collaborate with ML and platform teams to define data schemas, partitioning strategies, and governance rules that ensure privacy, scalability, and reliability Integrate unstructured and structured data sources (text, speech, image, documents, metadata) into unified data models ready for AI consumption Optimize performance and cost of data pipelines using GCP native services (BigQuery, Dataflow, Pub/Sub, Cloud Storage, Vertex AI) Contribute to data quality and lineage frameworks, ensuring AI models are trained on validated, auditable, and compliant datasets Continuously evaluate and improve our data stack to accelerate AI experimentation and deployment

Who You Are

Before you read on: if you don't have the exact profile described below, but you feel this job description matches your skill set, we still encourage you to apply. D.

Requirements

Our stack is composed of Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native. We leverage AI ethically across our products to empower patients and health professionals. Discover our AI vision here .

Want to learn more about our tech culture and environment? Visit the Doctolib Tech site .

What We Offer

Free comprehensive health insurance (basic package) for you and your children 25 days of paid vacation per year, plus up to 14 days of RTT Free mental health and coaching services through our partner Moka.care Work from abroad for up to 10 days per year thanks to our flexibility days policy Lunch vouchers (Swile card) worth €8.50 per working day, with €4.50 covered by Doctolib A subsidy from the work council to refund part of the membership to a sport club or a creative class 50% reimbursement of yo