This role involves designing, developing, and operating backend services for Rakuten’s global advertisement delivery platform. Candidates are expected to have strong experience with backend software development, distributed systems, APIs, databases, cloud or large-scale production environments, and programming languages such as Java, Go, or similar. Experience with system design, performance optimization, testing, monitoring, and reliable service operations is valuable. The successful candidate should be comfortable working in an international, cross-functional team, communicating clearly in English and/or Japanese, taking ownership of technical decisions, and improving advertising technology used at significant scale.
Rakuten Group, Inc. is a major Japanese technology and internet company headquartered in Tokyo. Founded in 1997, it operates a broad ecosystem covering e-commerce, fintech, mobile communications, digital content, travel, professional sports, and online advertising. Rakuten connects many of its services through a common membership and loyalty program, giving customers opportunities to earn and use Rakuten Points across the group. Its advertising and data businesses support targeted marketing for merchants, brands, and internal services. Rakuten has an international workforce and regularly hires engineers, product specialists, and business professionals from overseas. The company is known for using English as an official internal language in many departments, although Japanese remains useful for daily life and roles involving local partners or customers.
Japan offers strong opportunities in software engineering, cloud technology, cybersecurity, finance, robotics, gaming, automotive technology, and international business. Tokyo has the largest job market, while Osaka, Nagoya, Fukuoka, and Sapporo offer different lifestyle and industry options. Japanese workplaces value punctuality, preparation, teamwork, respect, and attention to detail; international companies may have more flexible communication styles. Life is generally safe and convenient, with excellent public transport, varied food, reliable services, and four distinct seasons. Rent and commuting costs are highest in Tokyo. Foreign hires commonly use the Engineer/Specialist in Humanities/International Services visa, with employers often supporting sponsorship and paperwork. Highly skilled professionals may qualify for a points-based visa and faster permanent-residency routes. Before relocating, arrange housing, health insurance, a residence card, banking, and basic Japanese language skills.
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