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$31k – $60k per year (Estimated)
Location
In office (Paris)
Seniority
Intern
Employment
Internship

Confirmed on the employer's own hiring board on Sep 23, 2026. First seen by Alion on Sep 23, 2026. Sanofi scores A on the Alion truth index.

Overview
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Sanofi is a French pharmaceutical company formed in 1973 and assembled over five decades through a long series of mergers including Synthelabo, Aventis and Genzyme. It is now built around immunology and rare disease, with Dupixent for atopic dermatitis and asthma as by far its largest product, alongside a substantial vaccines division covering influenza, meningitis and the respiratory syncytial virus antibody Beyfortus. Headquartered in Paris, the group has sharpened its focus in recent years by separating its consumer healthcare business into the standalone company Opella and directing research spending toward biologics and immune science.

Job title: internship 6 months - data science

  • Location: Paris 16e
  • Starting : January 2027

About the job

As an intern within our digital & data department, you will help develop marketing mix modeling and marketing budget allocation optimization tools, which will help us make data-driven decisions about our marketing spend across multiple channels. Ready to get started?

Ready to grow your skills while helping shape the future of healthcare? At Sanofi, you’ll be empowered to learn, ask questions, and bring your ideas to life - all while supported by inspiring mentors and collaborative teams.

About Sanofi:

We’re an R&D-driven, AI-powered biopharma company committed to improving people’s lives and delivering compelling growth. Our deep understanding of the immune system - and innovative pipeline - enables us to invent medicines and vaccines that treat and protect millions of people around the world. Together, we chase the miracles of science to improve people’s lives.

Main responsibilities:

  • Participate in applying statistical methods and machine learning techniques to extract insights from datasets
  • Take part in implementing and fine-tuning AI and ML models, using especially Bayesian inference algorithms
  • Help present findings through clear and informative charts, graphs, and dashboards
  • Collaborate with data engineers, software engineers, product owners and marketing stakeholders
  • Contribute to creative approaches, developing innovative data-driven solutions, exploring new methodologies and thinking outside the box to tackle complex challenges

About you

  • Soft and technical skills: curiosity, communication, analytical mindset. Knowledge in supervised and unsupervised learning , in deep learning, and in LLMs, experience with Python programming for data science and with big data concepts, basic understanding of database systems
  • Education: Master’s degree in mathematics, computer science, engineering, physics or statistics
  • Languages: english fluent

Why choose us?

  • Launch your career with a company that invests in you - and empowers you to reimagine what’s possible.
  • Build your future with access to the latest tools, digital innovation, and continuous learning that keep you ahead of the curve.
  • Grow in a purpose-driven company where your voice matters and your work helps improve millions of lives.
  • Thrive in inclusive, flexible workplaces that support your personal and professional well-being.
  • An attractive internship bonus.
  • Depending on your location, access to a company restaurant with a contribution from Sanofi.
  • Our recruitment process is designed to be fast and efficient. If your application is accepted, you will receive a call from our recruiter for an initial telephone interview, followed by a quick meeting with the manager.

Pursue Progress. Discover Extraordinary.

Join Sanofi and step into a new era of science - where your growth can be just as transformative as the work we do. We invest in you to reach further, think faster, and do what’s never-been-done-before. You’ll help push boundaries, challenge convention, and build smarter solutions that reach the communities we serve. Ready to chase the miracles of science and improve people’s lives? Let’s Pursue Progress and Discover Extraordinary - together.

At Sanofi, we provide equal opportunities to all regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, protected veteran status or other characteristics protected by law.

Intitulé du poste: stage 6 mois - data science

  • Lieu : Paris 16ème arrt
  • A partir de : janvier 2027

À propos du poste

En tant que stagiaire au sein de notre département digital & data, tu vas aider à développer des outils de Marketing Mix Modeling et d'optimisation de l'allocation budgétaire marketing, qui nous permettront de prendre des décisions basées sur les données concernant nos dépenses marketing à travers plusieurs canaux. Prêt à commencer ?

Prêt(e) à développer tes compétences tout en participant à l’avenir de la santé ? Chez Sanofi, tu auras la liberté d’apprendre, de poser des questions et de donner vie à tes idées, le tout soutenu par des mentors inspirants et des équipes collaboratives.

À propos de Sanofi :

Sanofi est une entreprise biopharmaceutique qui innove en R&D et exploite l'IA à grande échelle pour améliorer la vie des gens et créer de la croissance à long terme. Notre compréhension approfondie du système immunitaire - et notre pipeline innovant - nous permet d’inventer des médicaments et des vaccins qui traitent et protègent des millions de personnes dans le monde entier. Ensemble, nous poursuivons les miracles de la science pour améliorer la vie des gens.

Principales responsabilités :

  • Participer à l'application de méthodes statistiques et de techniques de machine learning pour extraire des insights à partir d’ensemble de données
  • Prendre part à l'implémentation et à l'optimisation de modèles d'IA et de ML, en utilisant notamment des algorithmes d'inférence bayésienne
  • Apporter votre support dans la présentation des résultats à travers des graphiques, des diagrammes et des tableaux de bord clairs et informatifs
  • Collaborer avec des ingénieurs de données, des ingénieurs logiciels, des product owners et des parties prenantes marketing
  • S’impliquer dans la proposition des approches créatives

À propos de toi

  • Compétences techniques et relationnelles : curisité, communication, esprit analytique. Connaissances en apprentissage supervisé et non supervisé, en deep learning et en LLM, expérience en Python, compréhension de base des systèmes de bases de données.
  • Éducation : bac+5 en data science, en ingénierie, en mathématiques ou en statistiques
  • Langues : anglais courant

Pourquoi nous choisir ?

  • Lance ta carrière dans une entreprise qui investit en toi, et te donne les moyens de réinventer ce qui est possible.
  • Construis ton avenir avec les outils les plus récents, l’innovation digitale et un apprentissage continu pour toujours garder une longueur d’avance.
  • Évolue dans une entreprise engagée où ta voix compte et où ton travail améliore la vie de millions de personnes.
  • Épanouis-toi dans des environnements inclusifs et flexibles qui soutiennent ton bien-être personnel et professionnel.
  • Une gratification de stage attractive.
  • Selon votre site de rattachement, l’accès à un restaurant d’entreprise avec une participation de Sanofi.
  • Notre processus de recrutement a été pensé pour être rapide et efficace. Si votre candidature est retenue, vous recevrez un appel de notre recruteur.se pour un premier échange téléphonique puis pour rencontrer rapidement le ou la manager.

Toujours Progresser. Découvrir l’Extraordinaire.

Rejoins Sanofi et entre dans une nouvelle ère de la science - où ton parcours peut être aussi transformateur que le travail que nous accomplissons. Nous investissons en toi pour que tu ailles plus loin, tu accélères ta réflexion et tu accomplisses ce qui n’a jamais été fait auparavant. Tu contribueras à repousser les limites, à bousculer les conventions et à concevoir des solutions plus intelligentes pour les communautés que nous servons. Prêt·e à poursuivre les miracles de la science et à améliorer la vie des gens ? Poursuivons le progrès et découvrons l’extraordinaire - ensemble.

Chez Sanofi, nous croyons dans l’égalité des chances, sans distinction de race, de couleur, d’ascendance, de religion, de sexe, d’origine, d’orientation sexuelle, d’âge, de citoyenneté, d’état civil, de handicap, d’identité de genre ou de tout autre critère protégé par la loi.

Pursue progress, discover extraordinary

Better is out there. Better medications, better outcomes, better science. But progress doesn’t happen without people - people from different backgrounds, in different locations, doing different roles, all united by one thing: a desire to make miracles happen. So, let’s be those people.

At Sanofi, we provide equal opportunities to all regardless of race, colour, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, ability or gender identity.

Watch our ALL IN video and check out our Diversity Equity and Inclusion actions at sanofi.com!

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