Job Description:Business OverviewRakuten is an EC company that owns Japan's largest platform called Rakuten Ichiba. The business model of Rakuten Ichiba is BtoBtoC, and Client Stores, Society and Rakuten Group work together as a unity. We cooperate and enlarge on the Rakuten Ichiba Platform. Department OverviewRakuten Group's EC First Party Development Department (ECFD) has several B-to-C businesses that will drive Rakuten business.The following services are currently operated by ECFD.・Rakuten Fashion・Rakuten 24, Rakuten 24 Express・Rakuten Mart, Rakuten Zenkoku Super・Rakuten BicIn the development of ECFD, we keep our eyes on the services along with the business, and we can propose, develop, and verify the effectiveness of the services by ourselves.You can acquire specialized and professional engineering skills related to e-commerce.Position:Why We HireIn recent years, our services have grown significantly each year and we have a number of projects to improve and enhance our services, requiring additional application engineering leaders. Position Details- Define and define requirements, design and manufacture (including external vendor management), and provide technical lead for projects in application development- As a technical lead, lead the design and development of applications in collaboration with PDM, internal members, and collaborating vendors.- As a core member of the project, monitor system stability and performance, optimize performance, design and maintain system architectures, refactoring, optimization, and troubleshooting.This position provides the opportunity to gain extensive knowledge and experience in the development of back-end systems, including batch processing and APIs to handle core processes such as order management and inventory. Work EnvironmentThe development organization of the EC First Party Development Department (ECFD) is divided by the services and products for which they are responsible, with a total of over 100 engineers. In addition to new graduates, there are many members from SIer and other business companies, and the team consists of a wide range of ages, from young people aiming for growth to mid-career members leading the business.We have people from various backgrounds, including foreign nationals, who are active in the company. This time, we are looking for a tech leader class who can lead web application development from the upstream process to the release.Java/Spring, OracleDB, Redis, Git, Kubernetes/Docker, Jenkins, Gradle/Maven, Grafana/Prometheus, Sentry Mandatory Qualifications:- 5+ years of experience developing and operating on large-scale systems using Java (SpringBoot)- 5+ years of practical experience in web application design, code review, tuning, performance improvement, and architecture improvement- 5+ years of practical experience with DB schema design and application with external system integration- 5+ years’ experience in Web API design and development Desired Qualifications:- Experience in selecting and implementing technology stacks to solve problems- In-depth knowledge and experience with MicroService, Kubernetes+Docker- In-depth knowledge and implementation experience with test automation- Experience for SAP or Dynamics365 Others Information:Additional information on English QualificationTOEIC score 800 above#engineer #frontendengineer #webdeveloper #commerce #RakutenFashion #Rakuten24Languages:English (Overall - 2 - Intermediate), Japanese (Overall - 3 - Advanced)