2026 Fall Co-Op - Drug Substance Development, mRNA, Engineer - Vaccines

Sanofi • Waltham, MA

11d • $27 - $47 • Onsite

About The Position

Join the team protecting half a billion lives every year with next-gen science, mRNA innovation, and AI-driven breakthroughs. In Vaccines, you’ll help advance prevention on a global scale - and shape the future of immunization. At Sanofi, we chase the miracles of science, and we know mRNA has a role to play in the future of health. And while the pandemic has shaken up our industry, creating new opportunities and risks, we believe the acceleration of innovation with mRNA technology means vaccines and treatments for more people faster than before. That’s why we’re looking for bold, optimistic world-changers to join our mRNA Center of Excellence. We’re investing €400m a year into the new Center, hiring a team of 450 dedicated employees, and focusing on implementing an integrated end-to-end mRNA vaccine capabilities and research with R&D, digital and CMC teams. Bring your ambition and optimism and join us on our journey to discover and deliver transformative medicine to patients through the advancement of our cutting-edge mRNA technology! The Co-op/intern Engineer reports to Principal Engineer and is an integral part of mRNA Drug Substance Process Development team. This position offers opportunities to focus on mRNA drug substance process development, manufacturing, regulatory and analytical support, validation, and data review for drug substances and drug products. The Co-op/intern Engineer is responsible for assisting the development and execution of scalable and robust processes for drug substance. This position will assist with the implementation of digital tools for data capture and execution. 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.

Requirements

• Currently enrolled and pursuing a bachelor’s or master’s degree in Chemical Engineering, Biomedical engineering, or related field with plans to graduate by Spring 2028
• Must be able to relocate to the Waltham, MA office location and work 40hrs/week, Monday-Friday, for the full duration of the co-op/internship
• Must be enrolled in an accredited college or university throughout the 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

Nice To Haves

• Ability to quickly learn digital tools.
• Knowledge of engineering principles (i.e. mass balance, etc).

Responsibilities

• Provide technical support for scale-up and manufacturing issues, and develop solutions to improve process efficiency and product quality (mRNA DS Production) – 50%
• Assist in the completion of process scale-up and Pilot batches
• Assist in the execution of scale down models for GMP manufacturing
• Assist in scale-down models to assist with process scale-up
• Assist in the implementation of Digital Tools – 50%
• Assist in the implementation of digital tools for inventory management, genealogy, and sample submission – 20%
• Assist in the implementation of digital tools for process data acquisition (Electronic lab notebooks and Electronic Batch Records.) – 30%

Benefits

• 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.

What This Job Offers

• Career Level: Intern
• Number of Employees: 11-50 employees