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Early Careers

Early Careers
Shape the future with us. This is how we Sanofi.

6 months internship - data science

Paris, France
Apply now

At a glance

Early Careers at Sanofi aren’t just about landing a role – they’re about starting a journey that stretches you from day one. You’ll dive into projects that matter, surrounded by people who challenge, mentor, and inspire you to explore more every step of the way.

Here, you can navigate paths across science, digital, manufacturing, and business – following your curiosity, growing your expertise, and building skills for tomorrow. With AI-powered tools, world-class learning, and a culture rooted in collaboration, we give you the opportunity to develop your expertise and transform our future.

Job title: 6 months internship – data science

  • Location: Paris 16e
  • Starting : january

About the job

As an intern within our team you’ll help develop and enhance Marketing Mix Modeling tools and marketing budget allocation optimization tools to support data-driven decision-making for our organization’s 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, particularly using Bayesian inference algorithms
  • Help present findings through clear and informative charts, graphs, and dashboards
  • Contribute to the team by staying updated with the latest trends, tools, and techniques in the field of data science
  • Collaborate with data engineers, software engineers, product owners, and marketing stakeholders
  • Participate in developing innovative, data-driven solutions by proposing creative approaches, exploring new methodologies, and thinking outside the box to tackle complex challenges

About you

  • Soft and technical skills: Proactivity, curiosity, good interpersonal skills. Experience with Python programming for data science and big data concepts. Basic understanding of database systems. Familiarity with software development practices. Hands-on experience with AI or ML modeling
  • Education: Master’s degree in mathematics, computer science, engineering, physics, 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.

PursueProgress. 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 16e
  • A partir de : janvier 2026


À propos du poste

En tant que stagiaire au sein de notre équipe, vous contribuerez au développement et à l'amélioration des outils de Marketing Mix Modeling et d'optimisation de l'allocation du budget marketing, afin de soutenir la prise de décisions basées sur les données concernant les dépenses marketing de notre organisation sur 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 informations à partir d’ensemble de données
  • Contribuer à l'implémentation et à l'optimisation de modèles IAet ML, en utilisant notamment des algorithmes d'inférence bayésienne
  • Prendre part à la présentation des résultats sous forme de graphiques, tableaux et dashboards clairs et informatifs
  • Prendre part à la veille des dernières tendances, outils et techniques dans le domaine de la data science
  • Collaborer avec les ingénieurs data, les ingénieurs logiciels, les responsables produits et les parties prenantes marketing
  • Contribuer au développement de solutions innovantes basées sur les données, en proposant des approches créatives, en explorant de nouvelles méthodologies et en pensant de manière originale pour résoudre des défis complexes

À propos de vous


  • Compétences techniques et relationnelles : Proactivité, curiosité, bonnes compétences interpersonnelles. Expérience en programmation Python pour la data science. Compréhension de base des systèmes de bases de données. Familiarité avec les pratiques de développement logiciel. Expérience pratique en modélisation IA ou ML
  • Éducation : Bac+5 en mathématiques, informatique, ingénierie, 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.   

ToujoursProgresser. Découvrirl’Extraordinaire.

Rejoignez Sanofi et entrez dans une nouvelle ère de la science – où votre parcours peut être aussi transformateur que le travail que nous accomplissons. Nous investissons en vous pour que vous alliez plus loin, accélériez votre réflexion et accomplissiez ce qui n’a jamais été fait auparavant. Vous contribuerez 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.

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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.

Watch 'One day at Sanofi' and check out our Diversity Equity and Inclusion initiatives at sanofi.com

Apply now
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Why work with us

  • Shape your own journey. At Sanofi, diverse perspectives fuel bold thinking – and your path is yours to define. Whether through internships or graduate programs, you’ll explore more and build the future-ready skills that take your potential to the next level.

  • Grow with the best. You’ll learn from experts across science, tech, manufacturing, and business – collaborating as one team on challenging projects that stretch you.

  • Be empowered by innovation. With AI-powered tools, fresh ideas, and the freedom to be curious, you’ll partner with colleagues who turn challenges into breakthroughs – and help reimagine what’s possible.

  • Make an impact from day one. Your work matters. You’ll shape solutions, contribute to an inclusive, sustainable future, and experience what it means to say: This is how we Sanofi.

This is how we Sanofi

Building international networks, empowering career growth, and innovating through smart risks. This is how we innovate. This is how we transform healthcare. This is how we Sanofi.

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"We’re transforming Early Careers at Sanofi — with a clear mission to empower the next generation of healthcare leaders with the skills of tomorrow. Here, you’ll find bold and meaningful experiences that fuel your growth, ignite your potential, and enable you to make an impact from day one."

Andrew Sharp

Global Head of Early Careers

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