Mainframe Developer (Consultant/Senior Consultant)

Role summary

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Capgemini is seeking a Mainframe Developer at Consultant or Senior Consultant level in Japan. Candidates should have experience developing, maintaining, and modernizing mainframe applications, ideally using COBOL, JCL, CICS, DB2, PL/I, or z/OS. Responsibilities may include requirements analysis, coding, testing, production support, technical documentation, and collaboration with client teams. Experience in banking, insurance, or other large enterprise environments is valuable. The role requires strong problem-solving skills, structured delivery, teamwork, and the ability to communicate with stakeholders. Japanese-language proficiency is likely important for client-facing work, while English may be useful within Capgemini's global teams.

About the employer

Capgemini is a global consulting, technology services, and digital transformation company headquartered in France. It helps organizations design and implement technology solutions across cloud, data, artificial intelligence, enterprise applications, engineering, cybersecurity, and IT modernization. Capgemini works with clients in industries such as financial services, manufacturing, automotive, retail, telecommunications, and the public sector. Its consultants support projects ranging from business strategy and systems integration to application development and managed services. In Japan, the company serves major domestic and international organizations and offers opportunities to work in multicultural delivery teams. Employees may contribute to large-scale transformation programs while developing expertise in specialized technologies, including legacy-system modernization and mainframe engineering.

Working in Japan

Japan offers strong technology opportunities in Tokyo, Osaka, Nagoya, and Fukuoka, particularly in banking, manufacturing, automotive, consulting, cloud services, and enterprise IT. Mainframe and legacy-modernization skills remain valuable among large corporations and financial institutions. Japanese workplace culture generally emphasizes punctuality, preparation, teamwork, respect, and careful communication, although international companies often provide more flexible environments. Lifestyle options range from fast-paced city living to quieter regional communities, with excellent public transport, safety, healthcare, and food. Foreign professionals typically need an employer-sponsored work visa, commonly an Engineer/Specialist in Humanities/International Services visa; highly skilled applicants may qualify for preferential treatment. Relocation usually involves securing a job offer, residence status, housing, health insurance, and a residence card. Japanese language ability significantly improves career prospects and daily life, especially in client-facing roles.