[Skip to main content](#main-content) [ OpenNash ](https://opennash.com/) / [Jobs](https://jobs.opennash.com/) [ 01 Search jobs](https://jobs.opennash.com/search/)[ 02 Companies](https://jobs.opennash.com/explore/)[ 03 Hiring report](https://jobs.opennash.com/reports/hiring/)[ 04 AI assistants](https://jobs.opennash.com/connect/)[ 05 How it works](https://jobs.opennash.com/methodology/) Regeneron Pharmaceuticals · Minato-Ku # Mgr Field Medical Affairs Minato-Ku Healthcare & Clinical Listed on Regeneron Pharmaceuticals’s official careers site. Posted October 21, 2026. Check that it is still open and apply there. [Apply on Regeneron Pharmaceuticals’s careers site →](https://careers.regeneron.com/en/jobs/r47461/mgr-field-medical-affairs/) [OpenNash Jobs](https://jobs.opennash.com/) / [Regeneron Pharmaceuticals](https://jobs.opennash.com/companies/regeneron-pharmaceuticals/) / Mgr Field Medical Affairs ## Job description ### 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 Manager Medical Science Liaison Oncology Japan Field to join our Global Medical Affairs Field Medical team, supporting our oncology business in Japan in a field-based work mode. In this role, you will deliver scientific engagement and field insights that strengthen Medical Affairs strategy while collaborating with external experts and cross-functional Medical Affairs teams. This position offers the opportunity to contribute to a fast-growing, science-driven organization making a meaningful difference to patients worldwide. ### When & where Japan ### Work model Field-based ### Discover your role - Deliver compliant scientific engagement with external oncology experts. - Gather and communicate field insights from engagement, congresses, and clinical practice. - Own assigned field medical activities with independent judgment. - Maintain expert mapping, investigator targets, and engagement priorities. - Provide oncology disease-state education to practitioners and researchers. - Support evidence generation, medical education, scientific communication, and Medical Affairs projects. - Contribute to investigator-initiated studies and clinical trial-site activities. - You build trusted relationships while acting with scientific integrity. ### This role requires - MD, PhD, or PharmD preferred; scientific bachelor's degree with substantial MSL experience may be considered. - Oncology and/or clinical trial experience. - Strong oncology and solid tumor expertise; lung cancer and/or immuno-oncology experience preferred. - 2+ years in pharmaceutical industry, clinical research, clinical practice, Medical Affairs, or related scientific roles. - Ability to independently conduct scientific engagement and field insight gathering. - Strong scientific communication and presentation skills with external and internal stakeholders. - Experience building relationships in academic and clinical-practice settings. - Experience working in matrix organizations; partnership experience is valued. - Understanding of and adherence to non-promotional Field Medical compliance requirements. - Fluency in Japanese and English. - Willingness to travel approximately 40–60%. - Experience with immuno-oncology, targeted, antibody-based, or novel oncology therapies preferred. - Prior Field Medical or Medical Science Liaison experience in oncology preferred. - Experience translating external scientific discussions into actionable insights preferred. - Willingness to contribute beyond field engagement across broader Medical Affairs activities. - Strong teamwork, ownership, integrity, flexibility, resourcefulness, and independent problem-solving skills. 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. ## At a glance - Posted by the employer: Oct 21, 2026 - First seen by OpenNash: Oct 26, 2026 - Last checked: Nov 2, 2026 - Listed for: 12 days - Location: Minato-Ku[Apply on Regeneron Pharmaceuticals’s careers site →](https://careers.regeneron.com/en/jobs/r47461/mgr-field-medical-affairs/) ## Hiring at Regeneron Pharmaceuticals - Open jobs: 866 - New in the last 7 days: After two weekly collections - Tracked since: Jul 15, 2026 [All Regeneron Pharmaceuticals jobs](https://jobs.opennash.com/companies/regeneron-pharmaceuticals/) · [Weekly hiring report](/reports/hiring/) ## More jobs at Regeneron Pharmaceuticals ### [Clinical Study Specialist](https://jobs.opennash.com/companies/regeneron-pharmaceuticals/jobs/80a4742acf219ef6cd1b/) Minato-Ku ### [Director Medical Affairs, Hematology](https://jobs.opennash.com/companies/regeneron-pharmaceuticals/jobs/7f64549a5bf634b213ff/) Minato-Ku ### [Manager, Clinical Study Lead](https://jobs.opennash.com/companies/regeneron-pharmaceuticals/jobs/fb7f0255637dd82e73fb/) Minato-Ku ### [Manager, Field Medical Affairs - Hematology](https://jobs.opennash.com/companies/regeneron-pharmaceuticals/jobs/c8d1f71c508bbbda40a0/) Minato-Ku ### [Principal Medical Writer, Medical Writing](https://jobs.opennash.com/companies/regeneron-pharmaceuticals/jobs/f1a4ce92dca390eddfbf/) Minato-Ku ## Similar jobs at other companies ### [[MA] RA/Gastroenterology, Medical Affairs Scientist, Medical Manager/Associate (Field Medical)](https://jobs.opennash.com/companies/pfizer/jobs/03b844f5c0e10c91579a/) Pfizer · Japan - Tokyo ### [Werkstudent:in Medical Affairs Neuroscience](https://jobs.opennash.com/companies/eli-lilly/jobs/cf667e8cd13952453026/) Eli Lilly · BAD HOMBURG, Hesse, Germany ### [US Field Medical Affairs - Regional Medical Scientific Director - Thoracic Oncology (Los Angeles)](https://jobs.opennash.com/companies/merck-co/jobs/cd5c398a61127507df37/) Merck & Co. ### [[MA] Amyloidosis, Field Medical Affairs Scientist](https://jobs.opennash.com/companies/pfizer/jobs/cf649520688d42d70f78/) Pfizer · Japan - Tokyo ### [Medical Affairs Oncology Scientific Content & Medical Information, Specialist](https://jobs.opennash.com/companies/merck-co/jobs/cdf086a185782d9656cd/) Merck & Co. · JPN - Tokyo - Chiyoda OpenNash lists jobs from employers’ own careers sites and does not handle applications. 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