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Principal Scientist, Process Research, Synthetic Molecule Process Development, Pharmaceutical Sciences

Japan Takeda Pharmaceuticals ¥10,000,000–¥16,000,000 per year*
Job Description

This role leads process research and synthetic molecule process development for pharmaceutical compounds at Takeda’s Fujisawa site. Requirements typically include an advanced degree in organic chemistry, process chemistry, pharmaceutical sciences, or a related discipline, together with substantial experience developing scalable synthetic routes and improving manufacturing processes. The successful candidate should understand reaction optimization, impurity control, crystallization, analytical characterization, technology transfer, and GMP expectations. Strong scientific leadership, project management, technical writing, collaboration with discovery, analytical, manufacturing, and regulatory teams, and the ability to coach scientists are expected. Experience with external partners and communicating complex technical conclusions to senior stakeholders is highly valuable.

Company Info

Takeda Pharmaceutical Company is a global, research-driven biopharmaceutical company headquartered in Japan. Founded in 1781, it operates in more than 80 countries and regions, combining Japanese heritage with an international workforce and scientific network. Takeda focuses on areas including gastroenterology, rare diseases, plasma-derived therapies, oncology, neuroscience, vaccines, and innovative medicines. Its research and manufacturing organizations develop medicines from early discovery through commercial production, with strong emphasis on patient impact, quality, ethics, and compliance. The Fujisawa campus is one of Takeda’s important Japanese locations and supports pharmaceutical research, development, and technical operations. Employees commonly work in multidisciplinary and multicultural teams, collaborating with academic institutions, contract organizations, and global Takeda sites. The company generally offers structured career development, competitive benefits, and opportunities to contribute to large-scale drug development programs.

Destination Guide

Japan offers strong opportunities in pharmaceuticals, biotechnology, engineering, manufacturing, technology, healthcare, finance, and education, particularly around Tokyo, Yokohama, Osaka, Kyoto, and Fukuoka. Professional workplaces value punctuality, preparation, teamwork, respect, and attention to detail; international companies may use English, but Japanese ability improves career options and daily convenience. Life is safe and efficient, with excellent rail transport, healthcare, food, and public services, although housing and commuting costs can be high in major cities. Fujisawa provides a coastal lifestyle near Tokyo, with beaches, restaurants, and access to the Shonan area. Foreign professionals usually need an employer-sponsored work visa, commonly the Engineer/Specialist in Humanities/International Services or a highly skilled professional status, depending on qualifications and duties. Before relocating, confirm sponsorship, degree requirements, tax obligations, housing arrangements, health insurance, and family documentation. Learning basic Japanese and understanding local etiquette make settling in considerably easier.

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