Summer-Fall 2026 Biochemistry Co-op

Job Title: Summer-Fall 2026 Biochemistry Co-op

Location:

Waltham, MA

About The Job

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 methods, 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.

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

• Complete specific laboratory research tasks under supervision and demonstrate high productivity and consistency, with high quality data.
• Learn about the fields of Biochemistry 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 present data.

About You

Basic qualifications:

• Currently enrolled and pursuing a bachelor's or master's degree in life sciences, biochemistry or related field at an accredited college or university with the expectation that you will complete your current degree by the Spring of 2028.
• Must be able to relocate to the office location and work 40hrs/week, Monday-Friday, for the full duration of the co-op/internship.
• Must be permanently authorized to work in the U.S. and not require sponsorship of an employment visa (e.g., H-1B or green card) at the time of application or in the future. Students currently on CPT, OPT, or STEM OPT usually require future sponsorship for long term employment and do not meet the requirements for this program unless eligible for an alternative long-term status that does not require company sponsorship.

Preferred Qualifications

• Proficient in at least one programming language commonly used in data science (e.g., R, Python, C#).
• 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.
• Exposure to cutting-edge technologies and research methodologies.
• Networking opportunities within Sanofi and the broader biotech community.

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.

Sanofi US endeavors to make our career center accessible to any and all users. If you are experiencing difficulty and need assistance applying online, please click here.

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.