We are seeking a **Senior Associate Scientist** to join Protein Development group within our Therapeutic Proteins department. You will join our ongoing efforts towards purification processing and characterization of protein reagents. **As a Senior Associate Scientist, a typical day might include:** + Purifying therapeutic reagents and antibodies for ongoing therapeutic programs using standard purification systems and automated equipment + Conducting protein purification and characterization by liquid chromatography such as affinity, IEX, HIC, and SEC. + Doing protein characterization of reagents by Western blotting, SDS-PAGE electrophoresis, CE-SDS, SEC chromatography, spectrophotometry, etc. + Entering, analyzing, and documenting data of purified characterized reagents in LIMS and presentations + Communicating results clearly and concisely to manager and peers **This role might be for you if you:** + Can work productively in a fast-paced collaborative team + Have strong organizational skills and excellent verbal and written communication skills + Enjoy working productively in a fast-paced collaborative environment + Have an eye for detail and pride yourself on the quality of your work + Work on current problems while thinking of future solutions **In order to be considered for this role,** you must have at least a BS/MS in Molecular Biology, Cellular Biology, Biochemistry or related field with 3+ years of relevant experience in protein purification/characterization. We need someone with a strong background in protein chemistry. Experience with SDS PAGE and Western blot is required. Must have experience with liquid chromatography and isolation techniques such as Affinity, IEX, HIC, and SEC. AKTA Avant experience preferred. Characterization experience of reagents by Western blotting, SDS-PAGE electrophoresis, CE-SDS, and SEC chromatography is also required. Must have experience with data entry and notebook keeping using ELN. Does this sound like you? Apply now to take your first step towards living the Regeneron Way! We have an inclusive and diverse culture that provides comprehensive benefits, which often include (depending on location) health and wellness programs, fitness centers, equity awards, annual bonuses, and paid time off for eligible employees at all levels! 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, nationality, national or ethnic origin, civil status, age, citizenship status, membership of the Traveler community, sexual orientation, disability, genetic information, familial status, marital or registered civil partnership status, pregnancy or parental status, gender identity, gender reassignment, military or veteran status, or any other protected characteristic in accordance with applicable laws and regulations. The Company will also provide reasonable accommodation to the known disabilities or chronic illnesses of an otherwise qualified applicant for employment, unless the accommodation would impose undue hardship on the operation of the Company's business. For roles in which the hired candidate will be working in the U.S., the salary ranges provided are shown in accordance with U.S. law and apply to U.S.-based positions. For roles which will be based in Japan and/or Canada, the salary ranges are shown in accordance with the applicable local law and currency. If you are outside the U.S, Japan or Canada, please speak with your recruiter about salaries and benefits in your location. Please note that certain background checks will form part of the recruitment process. Background checks will be conducted in accordance with the law of the country where the position is based, including the type of background checks conducted. The purpose of carrying out such checks is for Regeneron to verify certain information regarding a candidate prior to the commencement of employment such as identity, right to work, educational qualifications etc. **Salary Range (annually)** $79,100.00 - $129,100.00