Mainframe Designer（Manager）

Role summary

Written by MyIslandJob from the job title and employer. See the employer's page for the full description.

Capgemini’s Mainframe Designer (Manager) role in Japan typically requires strong experience designing and modernizing mainframe solutions, including IBM z/OS, COBOL, JCL, DB2, CICS and related integration technologies. The candidate is expected to lead technical design, translate business requirements into scalable architectures, oversee delivery quality and manage communication with clients and delivery teams. Experience supervising engineers, preparing technical documentation, supporting proposals and working in structured enterprise environments is likely required. Japanese-language capability is generally important for client-facing work in Japan, while English may be needed for global collaboration. The role also expects problem-solving, leadership, risk management and an understanding of mainframe modernization or migration initiatives.

About the employer

Capgemini is a global consulting, technology services and digital transformation company headquartered in France. It helps organizations improve their business performance through strategy, cloud, data and artificial intelligence, software engineering, cybersecurity, enterprise applications and managed services. The company serves clients across industries including financial services, manufacturing, automotive, telecommunications, retail and the public sector. Capgemini operates in many countries and combines local client teams with international delivery centers. In Japan, its work commonly includes business and technology consulting, systems integration, application services, cloud adoption and modernization of legacy platforms such as mainframes. The company is known for large-scale enterprise projects and structured career development, although responsibilities and working practices can vary by project, client and business unit.

Working in Japan

Japan offers opportunities for experienced technology professionals in mainframe modernization, cloud migration, software engineering, cybersecurity, enterprise systems and consulting. Tokyo and Osaka have the largest concentration of international employers, while Nagoya is especially strong in automotive and manufacturing. Japanese business culture values punctuality, preparation, teamwork, respect for hierarchy and careful communication. Daily life is generally safe and convenient, with excellent public transport, reliable services and varied housing costs; Tokyo is notably expensive. A work visa normally requires employer sponsorship and an appropriate status of residence, with eligibility based on qualifications and job duties. Candidates should confirm visa support, language expectations, relocation assistance and benefits before accepting an offer. Japanese ability is a significant advantage for client-facing positions, though multinational firms may use English internally. New arrivals should arrange housing, residence registration, health insurance and a bank account after arrival.