Co op Chemistry RandB Waltham MA

Job Title: 2027 Spring Co-op Chemistry R&B

• Grade: Co-op
• Location: Waltham, MA
• Duration: 6 months

Looking to launch your career at the cutting edgeof healthcare? Join Sanofi for a chance to develop with mentoring and guidance from inspirational leaders while helping to make an impact on the lives of countless people worldwide. We are seeking a motivated and detail-oriented
Spring Co-op/Intern
to join our
Chemistry R&B team
.

This is a full-time, onsite position offering a unique opportunity to contribute to cutting-edge research in synthetic organic and nucleic acid chemistry within a world-class pharmaceutical environment. The successful candidate will work alongside experienced scientists to support the development and advancement of innovative therapeutic modalities, directly aligned with Sanofi's mission to chase the miracles of science.

This co-op placement is designed to provide meaningful, hands-on laboratory experience while fostering scientific growth, professional development, and cross-functional collaboration.

Ready to grow your skills while helping shape the future of healthcare? At Sanofi, you’ll be empowered to learn, ask questions, and bring your ideas to life – all while supported by inspiring mentors and collaborative teams.

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.

• Perform synthesis, purification, and characterization of oligonucleotides and/or small molecule compounds in support of ongoing research programs.
• Operate and maintain solid-phase oligonucleotide synthesizers and related instrumentation.
• Execute ion exchange column chromatography for purification of nucleic acid-based compounds.
• Conduct LCMS analysis to assess purity, identity, and quality of synthesized materials.
• Accurately record experimental data, maintain detailed laboratory notebooks, and ensure data integrity in compliance with Sanofi's quality standards.
• Analyze and interpret experimental results, troubleshoot issues, and propose solutions in collaboration with senior scientists.
• Prepare clear and concise written summaries, experimental reports, and presentations to communicate scientific findings to the team.
• Participate actively in team meetings, scientific discussions, and project reviews.
• Adhere to all laboratory safety protocols, SOPs, and regulatory guidelines.

• Currently enrolled in a Bachelor of Science (BS) or Master of Science (MS) program in Chemistry, Biochemistry, Chemical Biology, or a closely related discipline.
• 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 Internal requirements for this program unless eligible for an alternative long-term status that does not require company sponsorship.
• Must be enrolled in an accredited college or university throughout the duration of the co‑op/internship.
• Must be able to relocate to the office location and work 40hrs/week, Monday to Friday for the full duration of the co‑op/internship.

• Solid foundational knowledge of organic chemistry and/or biochemistry principles.
• Strong attention to detail, organizational skills, and ability to manage multiple tasks in a fast‑paced research environment.
• Prior laboratory experience in synthetic organic chemistry and/or nucleic acid chemistry.
• Hands‑on experience operating solid‑phase oligonucleotide synthesizers, including any of the following platforms: MM192, MM/12/ Dr. Oligo/ ÄKTA Oligopilot 100 (OP100).
• Practical experience with ion exchange column chromatography for oligonucleotide purification.
• Proficiency in LCMS (Liquid Chromatography‑Mass Spectrometry) analysis and data…