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**Job Title:** mRNA Analytical Science Bioassay - Fall 2025 Co-op

**Location** : Waltham, MA

About the Job

As a mRNA Co-op Student in Analytical Sciences, you will participate in analytical development activities to support development and characterizations of mRNA vaccines in development.

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.​

Main Responsibilities:

+ Perform mRNA vaccine analytical testing in the lab, data analysis, and related document writing with a critical look at the relevance of the results.

+ Perform sample preparation following existing SOPs or analytical procedures.

+ Perform Western blot development, optimization, qualification, and testing.

+ Perform mammalian cell culture and transfections.

+ Perform ELISA development, optimization, and testing

+ Perform Flow cytometry and ddPCR testing

+ Perform data analysis, and related document writing with a critical look at the relevance of the results.

+ Develop and write work plans/protocols.

+ Summarize and communicate the progress of your work.

+ Participate in laboratory automation to set up high-throughput analyses.

+ Accompany and train newcomers in analytical technologies and methods.

+ Participate laboratory organization activities (orders, management/maintenance of equipment, reception & verification of reagents and receipt of samples).

+ Compliant to Sanofi Quality standards and HSE policy. Participate in continuous improvement of laboratory safety and quality compliance.

About You:

Basic qualifications:

+ Currently pursuing a bachelor’s or master’s degree in engineering, Biology, Biotechnology, health sciences, or other STEM related field at an accredited college or university with the expectation that you will complete your current degree by the Spring of 2027

+ Must be enrolled in school the semester following your internship with Sanofi

+ Must be able to relocate to the office location and work 40hrs/week, Monday-Friday, for the full duration of the internship

+ Must have permanent US work authorization

Preferred Qualifications:

+ BS degree with 0-2 years of professional experience in the vaccine or pharmaceutical industry in the field of R&D, QC analytics.

+ Interest in digital transformation and automation.

+ Good professional writing skills.

+ Essential qualities include ability to work in a fast paced, matrix environment; agility to respond to urgent requests, and initiative to lead new tasks.

+ Adherence to Quality and HSE aspects.

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.​

The salary range for this position is ​$27-$35 hourly​. All compensation will be determined commensurate with demonstrated experience. Employees may be eligible to participate in Company employee benefit programs. Additional benefits information can be found through LINK (https://benefits.sanofiusallwell.com/fleet/public/index/ba511bf8-5c32-4828-9861-ab985fffab90/?cid=sanofi) .​

**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). **

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.

\#GD-SP ​

\#LI-SP

\#LI-Onsite

\#vhd

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 (https://www.youtube.com/watch?v=SkpDBZ-CJKw&t=67s) and check out our Diversity Equity and Inclusion actions at sanofi.com (https://www.sanofi.com/en/our-responsibility/equality-and-inclusiveness) !

_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.

Global Terms & Conditions and Data Privacy Statement (https://www.sanofi.com/en/careers/global-terms-and-conditions/)

Sanofi is dedicated to supporting people through their health challenges. We are a global biopharmaceutical company focused on human health. We prevent illness with vaccines, provide innovative treatments to fight pain and ease suffering. We stand by the few who suffer from rare diseases and the millions with long-term chronic conditions.

With more than 100,000 people in 100 countries, Sanofi is transforming scientific innovation into healthcare solutions around the globe. Discover more about us visiting www.sanofi.com or via our movie We are Sanofi (https://youtu.be/96EwNjb1TLo)

As an organization, we change the practice of medicine; reinvent the way we work; and enable people to be their best versions in career and life. We are constantly moving and growing, making sure our people grow with us. Our working environment helps us build a dynamic and inclusive workplace operating on trust and respect and allows employees to live the life they want to live.

All in for Diversity, Equity and Inclusion at Sanofi - YouTube (http://www.youtube.com/watch?v=SkpDBZ-CJKw&t=2s)