Senior Scientist

We are seeking an innovative and highly motivated Ph.D.-level scientist to join our collaborative Immuno-Oncology team. This individual will help drive the discovery and advancement of next-generation cancer therapeutics, including multi-specific biologics, conditionally active agents, and emerging programmable therapeutic modalities. This position sits at the intersection of protein engineering, cancer biology, delivery technologies, and synthetic therapeutic design. The successful candidate will contribute to the development of tumor-selective therapies that leverage conditional activation, targeted delivery, and novel biological logic to achieve enhanced efficacy and therapeutic index. This role offers a unique opportunity to shape the future of cancer immunotherapy by advancing innovative therapeutic concepts from early discovery through preclinical development and translational evaluation. As a Senior Scientist in the Immuno-Oncology group, a typical day may include: Designing and evaluating next-generation multi-specific biologics, T cell engagers, novel payloads, or conditionally active therapeutic agents Contributing to the development of innovative delivery platforms, including nanoparticle- and nanomedicine-based systems for targeted delivery of RNA, small molecules, proteins, or other therapeutic payloads Developing strategies to enable tumor-selective activity through conditional activation, microenvironment-dependent targeting, or logic-gated therapeutic approaches (e.g., AND/OR/NOT circuits) Designing and executing in vitro and in vivo studies to evaluate pharmacology, mechanism of action, delivery efficiency, and anti-tumor activity Interpreting complex datasets, integrating findings with current scientific literature, and proposing data-driven next steps Driving scientific innovation through close collaboration with teams spanning protein engineering, oncology research, translational sciences, computational biology, and formulation development This role may be for you if you: Are passionate about developing transformative therapies for patients Enjoy working at the interface of multiple scientific disciplines Thrive in a highly collaborative, fast-paced, and scientifically rigorous environment Are intellectually curious and eager to explore emerging therapeutic modalities and technologies Demonstrate strong critical-thinking and problem-solving skills Communicate scientific concepts effectively to diverse audiences To be considered, you must meet the following: Ph.D. in Immunology, Oncology, Cancer Biology, Bioengineering, Chemical Biology, Biomedical Engineering, Molecular Biology, Biochemistry, or a related discipline 0–6 years of relevant postdoctoral and/or industry experience Strong scientific foundation in oncology, immunology, therapeutic development, or related areas Experience designing and interpreting complex biological experiments Strong analytical and communication skills, including the ability to clearly present scientific findings Preferred qualifications: Experience studying tumor immunology and the tumor microenvironment Experience with nucleotide-based therapeutics, including siRNA, ASOs, mRNA, gene editing technologies, or related modalities Familiarity with targeted delivery approaches and biological barriers to therapeutic delivery Experience integrating biologics with delivery technologies, including conjugates, targeted nanoparticles, or hybrid therapeutic systems Working knowledge of molecular and cellular biology techniques such as CRISPR, RNA interference, qPCR, Western blotting, and cell engineering Experience with syngeneic, orthotopic, genetically engineered, or patient-derived tumor models Familiarity with spatial biology, single-cell omics, transcriptomics, or computational analysis of high-dimensional datasets 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) $109,900.00 - $179,300.00 Regeneron is a leading biotechnology company that invents life-transforming medicines for people with serious diseases. Founded and led for over 30 years by physician-scientists, our unique ability to repeatedly and consistently translate science into medicine has led to nine FDA-approved treatments and numerous product candidates in development, almost all of which were homegrown in our laboratories. Our medicines and pipeline are designed to help patients with eye diseases, allergic and inflammatory diseases, cancer, cardiovascular and metabolic diseases, neurology, infectious diseases and rare diseases. Regeneron is also proud of award winning culture of innovation, being recognized as a Great Place to Work in 2021, Fast Company’s Best Workplace for Innovators in 2020, and Forbes JUST companies in 2020, among others.