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Sanofi · Marcy-l'Etoile

# internship 6 months analytical development in biochemistry and biophysics

Marcy-l'Etoile Full-time Early career Research & Science 

Listed on Sanofi ’s official careers site. Posted October 29, 2026. Check that it is still open and apply there.
[Apply on Sanofi ’s careers site →](https://sanofi.wd3.myworkdayjobs.com/SanofiCareers/job/Marcy-lEtoile/internship-6-months-analytical-development-in-biochemistry-and-biophysics_R2873837)

[OpenNash Jobs](https://jobs.opennash.com/) / [Sanofi ](https://jobs.opennash.com/companies/sanofi/) / internship 6 months analytical development in biochemistry and biophysics

## Job description

### Job title

internship 6 months analytical development in biochemistry and biophysics Location: Marcy l’Etoile Starting date: February 2027 About the job As Analytical Development in Biochemistry and Biophysics intern within our Analytical Sciences department, you’ll be involved in the development of analytical methods to characterize drug substance and drug product. 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
- Take part in developing and optimizing analytical methods in biochemistry and biophysics to characterize drug substance and drug product, in support of new vaccine development
- Support the execution of laboratory analyses and experiments according to defined protocols, ensuring accuracy, reproducibility, and compliance with quality standards
- Contribute to the analysis, interpretation, and exploitation of experimental data, drawing relevant scientific conclusions to support decision-making within the project
- Collaborate with the Analytical Sciences team to write clear, concise reports and present results effectively About you Soft and technical skills: curious, proactive and autonomous.

Skills in analytical methods, biophysical characterization and HPLC Education: Bac+4/5 in chemistry or biochemistry 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. 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!

## At a glance
- Posted by the employer: Oct 29, 2026
- First seen by OpenNash: Nov 1, 2026
- Last checked: Nov 8, 2026
- Listed for: 10 days
- Location: Marcy-l'Etoile
- Employment type: Full-time[Apply on Sanofi ’s careers site →](https://sanofi.wd3.myworkdayjobs.com/SanofiCareers/job/Marcy-lEtoile/internship-6-months-analytical-development-in-biochemistry-and-biophysics_R2873837)

## Hiring at Sanofi 
- Open jobs: 1,085
- New in the last 7 days: 268
- Tracked since: Jul 17, 2026

[All Sanofi jobs](https://jobs.opennash.com/companies/sanofi/) · [Weekly hiring report](/reports/hiring/)

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