**About the Job** We are an innovative global healthcare company with one purpose: to chase the miracles of science to improve people’s lives. We’re also a company where you can flourish and grow your career, with countless opportunities to explore, make connections with people, and stretch the limits of what you thought was possible. Ready to get started? Sanofi is seeking a highly motivated mass spectrometrist to join our analytical group as a principal scientist. The group is part of the synthetic platform within Global CMC Development that is striving to become an industry leader in the development of transformative medicines. The primary responsibility of this position is to provide analytical support to the chemistry teams. In this role, you will be responsible for the structural characterization and quantitation of synthetic small molecules using LC/MS and GC/MS as the primary techniques. This position is onsite and is based in Cambridge, Massachusetts, USA. **Key Responsibilities** + Provide identification and structural characterization of unknown impurities and degradants of synthetic small molecules. + Develop LC/MS and GC/MS based quantitation methods for small molecule quantitation and be responsible for validating them when necessary + Develop effective collaborations with other analytical chemists within the group and other scientists in project teams + Introduce innovative analytical approaches to facilitate optimal decision-making + Generate technical reports independently + Share knowledge and experience of analytical method development for synthetic molecules + May serve as a project lead **About you** **Basic Qualifications** + A PhD in analytical chemistry or related field with a minimum of 4 years experience in the pharmaceutical/biotech industry + Expertise in the operation of LC/MS and GC/MS + Extensive experiences in method development using LC/MS and GC/MS + Experiences in analytical method validation + Good communications skills **Preferred Qualifications** + In-depth understanding of separation principles of LC, GC and ion mobility + In-depth understanding of the principles of tandem mass spectrometry and state-of-the-art ion dissociation techniques + Familiarity with the operation of LC/MS systems from multiple manufacturers + Familiarity with software assisting compound identification by LC/MS and GC/MS + Demonstrated ability to solve complex problems with advanced LC/MS techniques + Demonstrated expertise in chromatography method development and trouble shoots + Knowledge of QbD concepts, specification setting, and cGMP, with experience in contributing to regulatory submission + Communicates effectively in individual and group settings and collaborate effectively in a multi-disciplinary team environment + Demonstrated project management skills + Consistent record of collaboration with scientists and other stake-holders at external enterprises + Advanced scientific network in the industry and academia + Record of patents and publications + Record of adhering to and promoting lab safety practices **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. 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-SG \#LI-GZ \#LI-Onsite​ **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) ! 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)