About the Job 

We are an innovative global healthcare company that helps the world stay ahead of infectious diseases by delivering more than 500 million vaccine doses a year. Across different countries, our talented teams are exploring new technologies to protect people and promote healthy communities. We chase the miracles of science every single day, pursuing progress to make a real impact on millions of patients around the world.

Sanofi is a global healthcare leader focused on patients’ needs engaged in the research, development, manufacturing, and marketing of innovative therapeutic solutions. Sanofi’s core strengths include general medicine, specialty care (rare disease) and human vaccines. The vaccine division of Sanofi provides more than one billion doses of vaccine each year, making it possible to immunize more than 500 million people across the globe. A world leader in the vaccine industry, Sanofi offers the broadest range of vaccines protecting against several infectious diseases.

At Sanofi, our determination inspires us to work tirelessly to make a difference in people’s lives every day, as we continually strive to create a future where everyone has access to groundbreaking medicines and healthcare.

Discover your future…

Sanofi’s opportunities offer exposure to a fast-paced and collaborative environment. Student hires work side-by-side with biopharmaceutical professionals, providing an opportunity to make an impact in the lives of patients around the globe.

**At this time, Sanofi will not sponsor a new applicant for employment authorization, or offer any immigration related support for this position (i.e. H1B, F-1 OPT, F-1 STEM OPT, F-1 CPT, J-1, TN, or another type of work authorization).**  

Our Team & Job Description:

The Biochemistry Group within the Global Antigen Design (GAD) Department contributes to the development of vaccine candidates from early prototype optimization to IND-enabling activities.  As a co-op in our Biochemistry platform concentrating on Biochemistry, you will contribute toward the development of innovative next generation vaccines targeting respiratory pathogens, (which may include seasonal influenza, pandemic influenza, RSV, hMPV and/or COVID). Your primary focus will be on vaccine candidate characterization, and you will work closely with our team of experts to advance Sanofi’s mission to protect and improve human health worldwide. The candidate will learn, design, perform, and execute protein expression, purification and characterization campaigns at research scales from Hamilton automatic purification system to various instruments for protein purification method, affinity purification, IEX, SEC, et al The candidate could learn various bioanalytical tools such as HPLC, mass spectrometry, DSC, BLI, CryoEM to assess correctly folded protein antigens.

Position Responsibilities:

Complete specific laboratory research tasks under supervision and demonstrate high productivity and consistency, with high quality data.

Learn about the fields of Biochemisty by reading scientific literature and interacting with supervisor and team.

Maintain and update experiment notebooks according to QA requirements.

Participate in lab and equipment maintenance, and re-stocking lab supplies.

Attend group meetings and presents data.

About you

Basic Qualifications:

Currently pursuing a bachelor's or master's degree in Life Sciences or other related field with the expectation that you will complete your current degree by Spring 2026

Must be enrolled in school the semester following your co-op with Sanofi.  

Must be able to relocate to our Waltham office location work 40hrs./week for the duration of the Co-op 

Must have permanent US work authorization 

Preferred Qualifications:

Preferably some R&D experience from lab courses or other experiences in biochemistry, cell culture, aseptic technique, or lab automated systems.

Strong knowledge of MS Office including Excel, PowerPoint and Word

Good interpersonal skills, communication, and ability to work independently and on a team, under supervision.

Able to perform experiments from verbal or written instructions, while learning and applying new concepts and research procedures.

Why Choose Us?

Bring the miracles of science to life alongside a supportive, future-focused team.

Discover endless opportunities to grow your talent and drive your career, whether it’s through a promotion or lateral move, at home or internationally.

Enjoy a thoughtful, well-crafted rewards package that recognizes your contribution and amplifies your impact.

Take good care of yourself and your family, with a wide range of health and wellbeing benefits including high-quality healthcare, prevention and wellness programs and at least 14 weeks’ gender-neutral parental leave.

Sanofi Inc. and its U.S. affiliates are Equal Opportunity and Affirmative Action employers committed to a culturally diverse workforce. All qualified applicants will receive consideration for employment without regard to race; color; creed; religion; national origin; age; ancestry; nationality; marital, domestic partnership or civil union status; sex, gender, gender identity or expression; affectional or sexual orientation; disability; veteran or military status or liability for military status; domestic violence victim status; atypical cellular or blood trait; genetic information (including the refusal to submit to genetic testing) or any other characteristic protected by law.

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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!

US and Puerto Rico Residents Only

Sanofi Inc. and its U.S. affiliates are Equal Opportunity and Affirmative Action employers committed to a culturally inclusive and diverse workforce. All qualified applicants will receive consideration for employment without regard to race; color; creed; religion; national origin; age; ancestry; nationality; natural or protective hairstyles; marital, domestic partnership or civil union status; sex, gender, gender identity or expression; affectional or sexual orientation; disability; veteran or military status or liability for military status; domestic violence victim status; atypical cellular or blood trait; genetic information (including the refusal to submit to genetic testing) or any other characteristic protected by law.

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Sanofi

Sanofi is a global healthcare leader focused on innovative therapeutic solutions. We seek a co-op student in Biochemistry with a bachelor's or master's degree in Life Sciences. The candidate will contribute to vaccine development and learn protein expression and purification. We offer a supportive team environment, career growth opportunities, and a comprehensive benefits package including healthcare and parental leave.

2025 Fall Co-Op GAD Biochemistry

Summary