Principal Scientist - RGM Chemistry

We are looking for a visionary Principal Scientist – RGM Chemistry to lead the discovery, development, and optimization of antibody-oligonucleotide conjugation technologies that power next-generation targeted therapeutics. Sitting at the intersection of bioconjugation chemistry, RNA science, and process innovation, you will set scientific strategy, guide a multidisciplinary team, and translate ground breaking concepts into scalable solutions that advance our therapeutic pipeline. Your deep expertise, collaborative attitude, and passion for mentoring will drive breakthrough medicines from bench to preclinical validation and beyond.

In this role, a typical day might include the following:
- Designing and completing experiments to refine linker chemistry, payload stability, and delivery efficiency for antibody-oligo conjugates
- Analyzing conjugates with HPLC, LC-MS, and bioassays to ensure purity, identity, and functional potency
- Leading project stand-ups, mentoring scientists and research associates, and troubleshooting technical challenges in real time
- Partnering with Process Development and Manufacturing to scale promising conjugation methods for preclinical supply
- Scouting and evaluating emerging bioconjugation or RNA delivery technologies, then proposing data-driven innovation projects
- Presenting program updates and strategic recommendations to senior R&D leadership and cross-functional partners

This job might be for you if you:
- Thrive on pushing the boundaries of antibody and oligonucleotide conjugation science
- Enjoy mentoring and developing talent in a collaborative, fast-paced research environment
- Translate sophisticated data into clear, actionable insights and strategic plans
- Demonstrate a strong record of innovation, publications, and/or patents in bioconjugation or RNA therapeutics
- Excel at balancing deep scientific rigor with pragmatic process development and scale-up considerations
- Are motivated by cross-functional collaboration that accelerates breakthrough medicines to the clinic

In order to be considered for this role, you must have:
- A Ph. D. in Chemistry, Biochemistry, Molecular Biology, or related field with 5+ years of postdoctoral or industry experience in antibody/oligonucleotide conjugation
- Validated expertise in bioconjugation, oligonucleotide therapeutics, and advanced analytical techniques (HPLC, LC-MS, bioassays)
- Proven leadership of multidisciplinary teams and successful track record in advancing therapeutic candidates toward preclinical or clinical development

Does this sound like you? Apply now to take your first step towards living the Regeneron Way! We are committed to building a workplace with an inclusive culture. Regeneron is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion or belief (or lack thereof), sex, sexual orientation, gender identity or expression, gender reassignment, marital or civil partnership status, civil status, pregnancy or parental status, age, disability, nationality, citizenship status, ethnic or national origin, membership of the Traveler community, familial status, genetic information, military or veteran status, or any other characteristic protected under applicable law. Where required, we will provide reasonable accommodation to applicants with known disabilities or chronic illnesses during the recruitment process, unless such accommodation would impose undue hardship.

Where necessary, we disclose salary ranges for roles in all countries in which we operate. The final offer will be determined within the relevant range based on the country of employment, specific role level, and your skills and experience. In some countries, collective bargaining agreements (CBAs) may apply and influence certain elements of pay or benefits. Regeneron offers a competitive and comprehensive total rewards package which may include, depending on country and role: annual bonuses or other incentive plans, equity awards, pension or retirement benefits, 401(k) company match, health and wellness programs, fitness centers, insurance benefits (e.g. medical, dental, vision, life and disability), paid time off, and family support benefits. For additional information about Regeneron benefits in the U.S., please visit . For other locations, additional information will be provided during the recruitment process. If you have any questions, please speak with your recruiter.

Please be advised that at Regeneron, we believe we do our best work when we are together. For that reason, many roles are required to be performed on‑site. Please speak with your recruiter and hiring manager for more information about on‑site expectations for your role and location.

As part of the recruitment process, certain background checks may be conducted in accordance with the laws of the country where the position is based. The purpose of such checks is to verify certain information prior to the commencement of employment such as identity, right to work and educational qualifications.

For jobs in Canada: this posting is for an existing position.

Salary Range (annually)