Senior Associate Scientist, Purification Development

About the Job

Mammalian Purification Process Development, part of the Sanofi R&D CMC organization, is responsible for development, scale-up, transfer, and characterization of purification processes for clinical and commercial manufacturing of therapeutic proteins from the mammalian production platform. In addition, the department develops next generation bioprocessing and process development technologies such as integrated and continuous bioprocessing, high throughput process development, and mechanistic modeling of bioprocesses. The department also works to support a global purification network and update our purification platform.
Join the engine of Sanofi’s mission — where deep immunoscience meets bold, AI-powered research. In R&D, you’ll drive breakthroughs that could turn the impossible into possible for millions.

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:

We are looking for candidates for the position of Senior Associate Scientist. This individual will join a dynamic and motivated team to develop downstream purification processes in support of early and late-stage drug development programs. In addition, the Senior Associate Scientist will support the tech transfer of the developed process into the clinical manufacturing team or Industrial Affairs organization while ensuring the highest standards of safety, environmental, and regulatory compliance are maintained in the workplace.

• Plan and execute purification experiments using high throughput, benchtop, and/or pilot scale chromatography and filtration systems.
• Independently document experimental results in technical reports and present results at departmental meetings.
• Work with supervisor to design purification models and experiments and perform data analysis.
• Work with supervisor to evaluate new technologies to enhance purification process understanding, performance, and/or process robustness.
• Develop, maintain, and demonstrate knowledge of principles, theories, and techniques in area of responsibility.
• Stay abreast of relevant new technologies and published literature, including attending technical forums.
• Maintain good communication and collaboration with colleagues in Purification Process Development, as well as other departments.

About You

• Master’s degree in chemical engineering, biochemical engineering, biochemistry or related discipline with the expectation that you will graduate by Fall 2026; or a bachelor’s degree in the same with a minimum of 2 years of relevant experience.
• An understanding of scientific principles underlying and/or experience with purification technologies and operations.

Preferred Qualifications:

• Relevant laboratory experience operating and maintaining purification equipment (e.g. AKTA, Tecan, ultrafiltration/diafiltration).
• Experience with statistical analysis and modeling.
• Experience with programming languages such as Python, R, Matlab.
• Excellent planning, organization, and communication skills.
• Logical and critical thinking skills, as well as high level of scientific curiosity and innovation mindset.
• Ability to work independently and function in a matrix/collaborative/team-oriented environment.

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.
• Be part of a pioneering biopharma company that engages patients early in drug development and uses their insights to design studies that reflect real-world needs.
• Help improve the lives of millions of people globally by making drug development quicker and more effective.
• Work at the forefront of drug discovery, harnessing cutting-edge AI, data, and digital platforms to push the boundaries of science.

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](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.

_North America Applicants Only_
The salary range for this position is:
$75.000,00 - $108.333,33
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 the [LINK](https://benefits.sanofiusallwell.com/fleet/public/index/ba511bf8-5c32-4828-9861-ab985fffab90/?cid=sanofi).

About Us

We are an R&D driven, AI-powered biopharma company committed to improving people’s lives and creating compelling growth. Our team is guided by one purpose: we chase the miracles of science to improve people’s lives.

We want to build a healthier, more resilient world, and turn the impossible into the possible by discovering, developing, and delivering medicines and vaccines for millions of people around the world.

Discover more about us visiting [www.sanofi.com](http://www.sanofi.com) or via our movie [We are Sanofi](https://youtu.be/96EwNjb1TLo)

Why Sanofi

Start a career that makes a difference.

Reinvention is in our DNA. It’s what drove our evolution from a small French enterprise to one of the world’s leading biopharma companies. Whether it’s using AI to shorten drug-discovery times or building trust in healthcare, you could be helping our teams make life better for patients, partners, and communities.

This is where you grow your career. We open the door for you to explore new opportunities, push your limits, and connect with people who are driven by a shared purpose: we chase the miracles of science to improve people’s lives.