Medical Representative; Mr – Oncology *Tokyo Area

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 Sales Specialist, Oncology to join our Oncology Sales team, supporting our oncology business area in a field‑based role. In this role, you will drive the adoption of our oncology product portfolio while collaborating with healthcare professionals and cross‑functional partners. This position offers the opportunity to contribute to a fast‑growing, science‑driven organization making a meaningful difference to patients worldwide.

You will be responsible for the Tokyo area.

While we assume living within Tokyo's 23 wards, we are also open to discussion regarding those living outside of Tokyo's 23 wards, Saitama, Chiba, and Kanagawa prefectures, depending on the specific area.

• Drive sales and adoption of the oncology product portfolio within assigned territory
• Develop and execute territory business plans to achieve sales targets
• Build and maintain relationships with healthcare professionals and key accounts
• Deliver approved scientific and clinical information to support customer decisions
• Identify and engage new business opportunities in the oncology space
• Collaborate with cross‑functional teams to support customer needs
• You adapt to evolving priorities and thrive in a results‑driven environment
• You demonstrate strong communication and relationship‑building skills

• Bachelor’s degree in life sciences, business, or related field
• Proven sales experience in the pharmaceutical, biotech, or healthcare industry
• Knowledge of oncology or related therapeutic area
• Strong communication, presentation, and negotiation skills
• Ability to travel within assigned territory as required
• Driver license and MR certification

Regeneron is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion or belief, 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.

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.