Back end Engineer - Rakuten

Location: Tokyo
Contract Type: Temporary
Salary: ¥2000.00 - ¥5000.00 per hour
Specialization: Technology & Digital, Telecommunication,
Sub Specialization: Programmer,
Contact: Akina Ando
Reference: JO-2106-461220
about Akina Ando

Note: Applicants must have permission to work in Japan and above Basic Japanese ~

[Company Description]
Rakuten Group


  • You will be in charge of designing, developing, and operating the following Web Services for Web front-end and mobile applications.
  • Rakuten Ichiba (Web front-end service, Native Mobile App service)
  • Global Rakuten Shopping iOS / Android Application (Taiwan, overseas sales)
  • ROOM: (, Room Mobile App


  • Microservice / RESTful API design and development experience using Java / Java EE (more than 5 years)
  • Java Virtual Machine, Deep knowledge of GC (Class loading, Memory Management (GC tuning), InvokeDynamic ... etc)
  • Object-oriented design and analysis (GoF design pattern, SOLID principle, functional programming design)
  • Java application server operation experience (Apache Tomcat / Grassfish / Undertow / Jetty / WebLogic ... etc)
  • Deep knowledge of Spring Framework

Japanese: Basic
English; Business

ーKey wordsー
JavaScript / HTML / CSS / React / Redux / TypeScript / Node JS / AngularJS / Jest / Intern / webpack / Babel / Jenkins / Git / AMP / PWA

[Preferred Knowledge, Skills and Abilities]

  • Enterprise development experience with SpringBoot
  • Experience with both waterfall and agile development

[Employment Type]
Haken staff) ※Long term estimated

[Work location]
Futakotamagawa Station

[Working days]
Monday to Friday

[Work hours and any overtime hours]
Over time:10-20hs/m estimate

[Length of contract]
ASAP ~ Long term

[Hourly Salary and Transportation]
2000yen〜5000yen ※Depends on your experience

※Please click "apply" if you are interested in the job.
We will review your profile and contact you within five business days should we find that you satisfy the requirements of the hiring company.
Further details about the company and position will be notified at a later date.
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