Senior Associate Scientist - Bioanalytical & Biomarker Technologies

**Build our future together:** At Regeneron, we use science and innovation to develop life-changing medicines for people with serious diseases. We are seeking a Senior Associate Scientist Bioanalytical Technologies USA to join our Bioanalytical & Biomarker Technologies group, supporting our biotherapeutics discovery and preclinical development programs in a hybrid work mode. In this role, you will design and execute analytical and bioanalytical methods while collaborating with discovery biology, DMPK/PK-PD, and analytical teams. This position offers the opportunity to contribute to a fast-growing, science-driven organization making a meaningful difference to patients worldwide. **When & where:** Tarrytown, NY On-Site **Discover your role:** * Design, execute, and troubleshoot LC-MS and HPLC methods for analytical characterization and bioanalytical quantification. * Support bioconjugates, monoclonal antibodies, antibody-drug conjugates, oligonucleotides, and biomarker programs. * Perform sample preparation using LLE, SPE, affinity capture, enzymatic digestion, and homogenization techniques. * Operate LC-MS/MS workflows from instrument setup through data analysis. * Analyze results, summarize findings, recommend next steps, and present data internally. * Document experiments, methods, and results in electronic lab notebooks and support SOP development. * Evaluate new platforms, workflows, and automation to improve throughput and robustness. * You adapt quickly to changing priorities and contribute in a collaborative team environment. **This role requires:** * BS or MS degree in Chemistry, Biochemistry, Pharmaceutical Science, or a related discipline. * 3+ years of hands-on experience in a relevant scientific environment. * Experience with liquid chromatography and/or mass spectrometry methods. * Ability to execute, qualify, optimize, and troubleshoot analytical methods. * Hands-on experience with sample preparation techniques, including LLE, SPE, affinity capture, enzymatic digestion, and homogenization. * Experience supporting bioanalysis of small molecules, oligonucleotides, biomarkers, or biotherapeutics using LC-MS-based approaches. * Experience maintaining laboratory documentation, electronic lab notebooks, and method records. * Automation platform experience is a plus. * Strong interpersonal, technical communication, organizational, and project management skills. * Ability to manage multiple priorities in a fast-paced environment while working collaboratively across functions. 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 [https://careers.regeneron.com/en/working-at-regeneron/total-rewards/](https://careers.regeneron.com/en/working-at-regeneron/total-rewards/). 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)** $80,300.00 - $131,100.00