Network Engineer - System Infrastructure Department, System Division, Rakuten Bank, Ltd.

Rakuten Group, Inc.

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Tokyo, Japan Until 9/22/2026 H-1B sponsor history First posted March 27, 2025 Last posted July 24, 2026
Job description

Job Description:

Department Overview 

The System Division is an organization where you can engage in all tasks related to all system, such as planning, development, operation and maintenance, etc., ranging from developing core business systems to smartphone applications for iPhone / Android.  

The systems are based on open architectures and we are also actively adopting open source technology. As taking on the important role of IT that determines the success or failure of the banking business, which is a social infrastructure, you can also enjoy the taste of it.  

In this great environment, we are looking for new members who can mutually stimulate and grow together. 

Why We Hire 

As a network specialist, you will mainly engage in product selection, design, development, and operation of a wide variety of network. We especially welcome those who can lead engineers, and those who have the motivation and skills to become a leader. 

Position Details 

  • Design and development of new network for new services 

  • Improve existing network for current services 

  • Research new technology of network and apply to the production 

  • Management of infrastructure projects 

  • Team leading as a team leader or assistant leader 

Mandatory Qualifications: 

  • Practical experience on network systems with CISCO and other products (5 years or more) 

  • Project management experience (3 years or more) 

  • Basic knowledge on firewall and load balancer 

  • Practical experience of performance tuning and troubleshooting on production systems 

Desired Qualifications: 

  • Practical experience of network design (more than 100 network nodes) 

  • Practical experience of operation of firewall and load balancer 

  • Design a whole network in the data center 

  • Practical experience working for mission critical financial service systems 

  • Ability to look over the entire system from a bird's-eye view, not just as a network engineer 

  • Team leading experience 

  • Curious about new services and technologies, self-studying ability

※ For more information, please refer to the links below: 

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Languages:

Japanese (Overall - 4 - Fluent)
About this role

Summary

Design, develop, and manage network systems for banking services.

Job title

Network Engineer

Experience level

5+ years

Industry

finance

Location requirements

Tokyo, Japan; remote work not allowed

Salary

Not specified

Visa sponsorship

H-1B sponsor history

Management role

Yes

Skills & keywords

Required skills

network systemsCISCOproject managementfirewallload balancerperformance tuningtroubleshooting

Preferred skills

network designfirewall operationdata center designfinancial service systemsteam leadingself-studying

Specializations

networkinfrastructurefirewallload balancerproject management
Locations

Structured locations inferred from the posting.

Tokyo, Japan

On-site City