Your Impact

We are looking for a Senior AI Engineer to join the Customer Care Contact team in the Business Performance domain.

Your mission will be to build AI-powered tools that revolutionize how healthcare professionals deliver care. You will work on Doctolib Assistant, our AI personal assistant designed to assist doctors and medical staff in their daily work—from answering complex medical questions to automating administrative tasks with accuracy, reliability, and safety.

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 build

Your responsibilities include but are not limited to:

Design, ship, and operate production-grade agentic systems powering Doctolib Assistant, our AI personal assistant that addresses key challenges for healthcare professionals
Build and improve AI agents and our orchestration systems
Partner with data scientists to design and implement evaluation pipelines, security/safety guardrails, and metrics—while taking ownership of operational AI projects as data science teams focus on exploratory research
Develop and maintain core agentic capabilities including memory, reasoning orchestration, tool adapters, and multi-agent coordination, ensuring strong observability, fallback mechanisms, and fail-safe behaviors
Own performance, observability and security: monitoring dashboards, SLO/SLI, and security posture
Ensure privacy and security by design, with a particular focus on medical data sensitivity
Contribute to fullstack development when needed to deliver end-to-end features for healthcare professionals

What you'll bring

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. You'll be a great fit if you:

Have 4+ years of experience as a software engineer, with hands-on experience in AI/ML systems
Have 2+ years of experience working with Python
Have gone through the full lifecycle of an AI product, from initial evaluation and launch to iterations based on results in production
Understand and promote best practices related to the software development life cycle such as automated testing, good use of CI/CD, and DevOps practices
Are comfortable with fullstack development and not afraid to dive into React/TypeScript/Kotlin to ship end-to-end features
Are product-oriented and comfortable guiding your teammates to suggest tradeoffs to balance business needs with technical constraints
Are comfortable speaking and writing in English in your day-to-day work with the team

It would be fantastic if you:

Have experience building multi-agent systems or agent development frameworks
Have worked on AI products for enterprise/professional users
Have experience in the medical domain or healthcare tech

Life at Doctolib Tech

Our solutions are built on a single, fully cloud-native platform that supports web and mobile app interfaces, multiple languages, and is adapted to country and healthcare specialty 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 for you and your children
Parent Care Program: receive additional leave on top of the legal parental leave
Free mental health and coaching services through our partner Moka.care
For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support
Work from abroad for up to 10 days per year, thanks to our flexibility days policy
Up to 14 days of RTT
A subsidy from the work council to refund part of the membership to a sport club or a creative class
Lunch vouchers (Swile card) worth €8.50 per working day, with €4.50 covered by Doctolib
50% reimbursement of your public transport subscription
Enrollment in Doctolib's long-term employee value sharing plan called DoctoGrowth
Relocation support in case of international mobility
Access to the best AI tools for coding, development and dedicated training

Our interview process

Recruiter Interview
Coding Interview
System Design Interview (with focus on AI systems architecture)
Behavioral Interview
At least one reference check

We want your experience to be clear, respectful, and transparent. Learn more about our hiring process on our candidate experience page.

Job details

Permanent position
Full-time
Location: Nantes, France
Start date: as soon as possible

We welcome everyone

At Doctolib, we are committed to improving access to healthcare for everyone. This translates into our recruitment process. We evaluate candidates based solely on qualifications and motivation, without any form of discrimination.

The more diverse ideas are heard, the more our product will truly improve healthcare for all. You are welcome to apply to Doctolib, regardless of your gender, religion, age, sexual orientation, ethnicity, or disability.

To ensure equal opportunities, we invite you to exclude personal information (e.g., pictures, age) from your applications. If you require any accommodation, please let us know for support during the hiring process.

Join us in building the healthcare we all dream of!

Your data privacy

All information provided is processed by Doctolib for application management. For data processing details, click here: France. Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights.