---
title: 'Senior AI Engineer - Search & Recommendation - Patient Team (x/f/m) at Doctolib'
canonical: 'https://feeny.ai/job/senior-ai-engineer-search-recommendation-patient-team-x-f-m-doctolib-paris-yg84jjwvd764'
type: 'job'
last_seen: '2026-09-15'
---

# Senior AI Engineer - Search & Recommendation - Patient Team (x/f/m) at Doctolib

- **Company:** Doctolib
- **Location:** Paris, France
- **Posted:** 2026-09-14
- **Last confirmed live:** 2026-09-15
- **Apply:** https://job-boards.greenhouse.io/doctolib/jobs/7994349003

## Job description

Join our mission, join Doctolib!

We are looking for a Senior AI Engineer to join the Patient team in Paris.

The Patient domain sits at the heart of Doctolib's mission: ensuring everyone has better access to the care they need, receives better care from health professionals, and can actively prevent health problems to improve their wellbeing.

You’ll design the search and recommendation engines behind our health companion, helping 100M patients across Europe instantly navigate to the exact care they need while delivering trusted, curated insights at every step. The retrieval and recommendation architecture you own will directly shape how relevant, fast, and trustworthy that experience is for every one of them.

Your responsibilities include but are not limited to:

- Design and build the production search & recommendation architecture: full retrieval, ranking, reranking pipeline with standard and off-the-shelf components (vector search, semantic retrieval, LLM/managed rerankers).
- Establish strong baselines first (prompts, RAG, model selection) before reaching for custom ML.
- Build evaluation and observability into every stage, with offline and online evaluation.
- Set up the data/event feedback loops that drive iteration and feed deeper ML later.
- Improve search relevance and ranking on Patient facing products , raising result quality
- Own production quality: latency reliability, monitoring, and maintainability.
- Partner with ML Engineers and collaborate closely with PMs and SWEs to define, build, and ship AI-powered features that deliver measurable value to users and the business.

## 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.

You could be our next team mate if you have:

- Production deployment: ability to ship algorithms to production (ECS-based service on AWS)
- Strong analytical mindset: result-oriented,  patient-first approach
- Significant experience as a Software or/and AI engineer shipping search or recommendation systems to production.
- Hands-on experience building end-to-end retrieval: ranking,  reranking pipelines and familiar with nDCG, MAP, Recall@k, MRR
- AI-engineering proficiency: turning foundation models and off-the-shelf components into production systems: embeddings & vector search, semantic retrieval, RAG, LLM-based or managed rerankers (e.g. Vertex AI). You can succeed without training a model from scratch
- Architecture-first approach: you build the system, baselines, evals, and feedback loops with standard tooling before reaching for custom ML, and know when to partner with ML Engineers to break a ceiling
- Evaluation & observability built into every stage (retrieval, ranker, reranker) — offline and online eval, A/B testing, position-bias handling, monitoring
- Production deployment — ability to ship reliable, low-latency services to production (hundreds-of-ms SLAs), with care for data quality and long-term maintainability

Now, it would be fantastic if you:

- Experience at a B2C marketplace (e-commerce, hospitality, travel)
- Additional ML methodologies: pattern mining, recommendation systems, experimentation, or causal inference
- Have experience with search engines or information retrieval concepts
- Have exposure to learning-to-rank or feature engineering (for breaking ceilings later, alongside ML Engineers)
- Have experience in a healthcare or other regulated domain (GDPR / HDS)

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](https://careers.doctolib.com/ai-careers/).
- We also invest in open, applied AI research. For example, our DoctoBERT project introduces open-source medical language models trained for French clinical text, with applications in named entity recognition, classification, and retrieval.[Read the DoctoBERT practical guide](https://huggingface.co/blog/hugging-science/doctobert-cookbook#introduction) to learn more about how we bring deep AI research into practical healthcare applications.

Want to learn more about our tech culture and environment? Visit the [Doctolib Tech site](https://careers.doctolib.com/tech-doctolib/).

## 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 your public transport subscription
- Enrollment in Doctolib's long-term employee value sharing plan called DoctoGrowth
- ParentCare Program: Enjoy full salary coverage (100%) during your first month of birth leave, and 75% during the second, covered by Doctolib
- For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support

The interview process

- A first interview with a member of the Talent Acquisition team
- A coding interview
- An agentics system design
- A behavioural interview
- Reference check

Job details

- Permanent position
- Full Time
- Workplace: Levallois
- Start date : As soon as possible

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, 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!

All information provided is processed by Doctolib for application management. For data processing details, click here: [Germany](https://doctolib.legal/B2C-Privacy-Policy-Career-DE) l [France](https://doctolib.legal/B2C-Privacy-Policy-Career-FR) l [Italy](https://doctolib.legal/B2C-Privacy-Policy-Career-IT) l [Netherlands](https://doctolib.legal/B2C-Privacy-Policy-Career-COM). Please contact hr.dataprivacy(at)doctolib.com to exercise your rights.

## About Doctolib

## Core Business
- **Primary industry**: Healthcare information technology (healthtech) / Software Development
- **Target customers**: B2B (healthcare professionals across 120+ specialties) and B2C (patients managing their health journey)
- **Mission or purpose statement**: “Build together the healthcare we all dream of” – making healthcare more human, sustainable, and accessible. The company is a certified B Corp and mission-driven.

## Products & Services
- **Appointment Booking** – 24/7 online scheduling, waitlist management, calendar optimization, reminders and delay notifications.
- **Practice Efficiency (Digital Secretariat)** – Tools for patient base management, task manager, openings/absences, recall campaigns, and analytics.
- **Clinical & Care Cooperation** – Electronic health records (EHR), document management, secure messaging, prescribing, billing engine, and AI assistants for documentation and decision support.
- **Health Companion (Patient App)** – A mobile app offering prevention campaigns, early detection programs, personalized guidance via an AI assistant, video consultations, and messaging with professionals.
- **AI Consultation Assistant** – Structured transcription of consultations; has supported 5 million consultations.
- **AI Phone Assistant** – Virtual assistant handling bookings and messages 24/7.
- **Financial Solutions** – Simplifies billing and insurance processes for healthcare professionals.
- **Platform & APIs** – Internal platform for modular development; data import/export, CRM integrations, and partner programs.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company)
- **Key Metric**: Annual Revenue EUR 257.6M (latest available); Total Funding USD 816M across 10 rounds
- **Notable Investors/Partners**: General Atlantic (lead in Series E), Eurazeo (Series D lead), Accel (Series B lead), and others. Acquired Dott.it, Tanker, and Appocrate.
- **Growth Signals**: 
  - 90 million patients and 420,000 healthcare professionals use the platform.
  - 2,900+ employees (up from ~2,618 as per LinkedIn; monthly headcount growth +1.0%).
  - Operating in France, Germany, Italy, Netherlands, with presence in Switzerland and UK.
  - Tech team of 900+ experts; AI features deployed in production (e.g., AI Consultation Assistant used in 5M consultations).

## Competitive Advantages
- **Network effects**: Large, two-sided marketplace connecting millions of patients with hundreds of thousands of professionals across Europe.
- **Deep healthcare expertise**: Over a decade of experience, solutions adapted to 120+ specialties and local regulations.
- **AI-first innovation**: Proprietary datasets, research lab, and production AI assistants that improve clinical efficiency.
- **Trust and compliance**: Certified B Corp, ISO 27001, HDS (health data hosting) – high security and privacy standards.
- **Platform modularity**: Cloud-native, distributed architecture that allows rapid adaptation to new countries and specialties.

## Strategic Focus
- **AI integration**: Scaling AI Consultation Assistant, AI Phone Assistant, and AI-powered clinical decision support.
- **Preventive and continuous care**: Shifting from reactive treatment to proactive health management via the Health Companion app.
- **Geographic expansion**: Deepening presence in existing European markets and entering new regions.
- **Platform modularization**: Building reusable components to accelerate product development and partner integrations.
- **Mission-driven growth**: Maintaining B Corp status while expanding revenue and impact.

## Why Work Here
- **Culture**: Mission-driven, B Corp certified, collaborative environment focused on social impact. Employees report a strong sense of purpose.
- **Work policy**: Flexible – hybrid and office-based modes available. Option to work from EU countries and the UK for up to 10 days per year.
- **Benefits**:
  - Health insurance 100% paid for employee and children.
  - 25 paid vacation days + up to 14 RTT days annually.
  - Free mental health and coaching services (Moka.care).
  - On-site gym with group classes (Paris office).
  - One additional month of parental leave on top of legal leave (Parent Care Program).
  - Lunch vouchers (Swile card), sports/club subsidy.
  - Solidarity Days (2 days/year for health charities).
- **Engineering culture**: 900+ tech team, dedicated onboarding (Doctolib Academy), continuous training, access to best AI tools, and internal mobility opportunities.
- **Employer rating**: 3.6/5 on LinkedIn (923 reviews) – work-life balance 3.7, culture 3.7, compensation 3.3.

## Sources
1. [careers.doctolib.com](https://careers.doctolib.com/)
2. [careers.doctolib.com/tech-doctolib](https://careers.doctolib.com/tech-doctolib/)
3. [linkedin.com/company/doctolib](https://www.linkedin.com/company/doctolib)
4. [jobsbyculture.com/companies/doctolib](https://jobsbyculture.com/companies/doctolib)
5. [welcometothejungle.com/en/companies/doctolib](https://www.welcometothejungle.com/en/companies/doctolib)

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