Emplacement

Paris
France
France

Contrat

À plein temps, Durée indéterminée

Date de publication:

2026-11-10

Online to:

2027-01-09
EUR 20.00 HOUR

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Senior Machine Learning Engineer - Applied AI & LLMs (x/f/m)

Doctolib
France
1 heure il y a

h3Your Impact /h3p We are looking for a strong Senior Machine Learning Engineer /strong to join the strong ML Engineering /strong team in strong Patient Solutions /strong. /pp Your mission will be to improve how people access quality care and manage their health over time by building and leading AI and ML systems that create real, measurable impact. You will work in a feature team developing intelligent patient-facing solutions, from smart practitioner discovery to long-term care management, playing a key technical role in shaping how we scale our AI capabilities across Europe. /pp Working in the tech team at Doctolib means building innovative products and features to improve the daily lives of care teams and patients. /ph3What you#39;ll do /h3p Your responsibilities include but are not limited to: /pulli Design and implement ML and AI solutions aligned with patient product goals, covering search, retrieval, and personalized care pathways /lili Build and maintain large-scale retrieval pipelines, including hybrid search, embedding systems, vector databases, and multi-stage re-ranking architectures /lili Develop, fine-tune, and evaluate LLM and VLM models using techniques such as knowledge distillation, Mixture-of-Experts (MoE) architectures, and prompt engineering /lili Build and orchestrate agentic AI systems, integrating external data and capabilities through tools and MCP-based integrations /lili Define metrics aligned with product goals, run controlled end-to-end experiments using WB, MLFlow, or Braintrust, and communicate findings to guide product and technical decisions /lili Deploy solutions to production in collaboration with our ML platform team, ensuring reliability, observability, and performance at scale, and act as a technical reference to elevate the team#39;s standards and practices /li /ulh3Who you are /h3p Before you read on: if you don#39;t have the exact profile described below, but you feel this job description matches your skill set, we still encourage you to apply. /pp strong You#39;ll be a great fit if you: /strong /pulli You have 7+ years of experience in Machine Learning, Deep Learning, or AI Engineering, with a strong track record of taking models from prototype to production at scale /lili You have strong experience in Information Retrieval and modern retrieval stacks: hybrid search (sparse + dense), large-scale embeddings and vector databases, multi-stage retrieval and re-ranking pipelines, RAG architectures, and tool/MCP-based integrations /lili You are proficient in LLM and VLM application development: fine-tuning, MoE architectures (via LiteLLM or Model Garden), knowledge distillation, prompt engineering, and systematic benchmarking of LLM/VLM systems /lili You have hands-on experience building and orchestrating agentic AI systems (e.g., using ADK) /lili You demonstrate strong scientific rigor: designing metrics aligned with product goals, running controlled experiments, and communicating results clearly to both product and engineering stakeholders /lili You have experience operating large-scale applications in production (monitoring, reliability, performance, observability), bring strong analytical skills, and approach your work with a user-first mindset. You are fluent in English /li /ulp strong It would be fantastic if you: /strong /pulli Have experience in B2C marketplace environments /lili Have experience in other ML methodologies: pattern mining, recommendation systems, experimentation, or causal inference /li /ulh3Life at Doctolib Tech /h3ulli 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. /lili Our stack is composed of Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native. /lili We leverage AI ethically across our products to empower patients and health professionals. Discover our AI vision a here /a. /li /ulp emWant to learn more about our tech culture and environment? Visit the a Doctolib Tech site /a. /em /ph3What we offer /h3ulli Free comprehensive health insurance (basic package) for you and your children /lili 25 days of paid vacation per year, plus up to 14 days of RTT /lili Free mental health and coaching services through our partner Moka.care /lili Work from abroad for up to 10 days per year thanks to our flexibility days policy /lili Lunch vouchers (Swile card) worth 8.50 per working day, with 4.50 covered by Doctolib /lili A subsidy from the work council to refund part of the membership to a sport club or a creative class /lili 50% reimbursement of your public transport subscription /lili ParentCare Program: Enjoy full salary coverage (100%) during your first month of birth leave, and 75% during the second, covered by Doctolib /lili Enrollment in Doctolib#39;s long-term employee value sharing plan called DoctoGrowth /lili For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support /lili Relocation support in case of international mobility /lili Access to the best AI tools for coding, development and dedicated training /li /ulh3Our interview process /h3ulli Recruiter Interview /lili Feature Building Interview /lili System Design Interview /lili Behavioral Interview /lili At least one reference check /li /ulp We want your experience to be clear, respectful, and transparent. Learn more about our hiring process on our a candidate experience page /a. /ph3Job details /h3ulli Permanent position /lili Full-time /lili Location: Doctolib Paris office in Levallois-Perret /lili Hybrid work setup (3 days/week in the office) /lili Start date: as soon as possible /li /ulh3We welcome everyone /h3p 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. /pp 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. /pp 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. /pp Join us in building the healthcare we all dream of! /ph3Your data privacy /h3p emAll information provided is processed by Doctolib for application management. For data processing details, click here: a France /a. Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights. /em /p

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Senior Machine Learning Engineer - Applied AI & LLMs (…

Emplacement

Contrat

Date de publication:

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Senior Machine Learning Engineer - Applied AI & LLMs (x/f/m)

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