Java Developer

• Make an impact at global scale by developing high-traffic travel and mobility platforms used by millions of customers within one o
• Gain end-to-end ownership across the software development lifecycle, from API design and development to deployment, operations, an
• Work with a modern tech stack and help shape the future of Mobility as a Service (MaaS) as part of a fast-growing and innovative O

Java Developer

Location: Osaka, Japan | Employment Type: Contract (Haken) and Convert to Permanent position

Company Overview

We are partnering with a leading multinational e-commerce company to hire a Java Developer for their growing Mobility Services team in Osaka.

As part of one of the world's largest digital ecosystems, serving approximately 100 million users in Japan and more than 1 billion users globally, you will contribute to the development of travel and mobility services including rental car, car-sharing, and bus booking platforms. This team plays a key role in shaping the future of travel in Japan while expanding its global presence.

Due to continued business growth, the Osaka engineering team is expanding and seeking talented backend developers to join their mission.

Responsibilities

• Design, develop, and maintain backend systems and web APIs using Java and Spring Boot.
• Build and enhance travel and mobility-related services, including rental car, car-sharing, and bus booking platforms.
• Develop scalable systems capable of handling high-volume traffic.
• Own the software development lifecycle from system design and implementation to deployment and maintenance.
• Perform server-side development and support database-related tasks.
• Participate in DevOps activities and continuous improvement initiatives.
• Collaborate with Product Managers, engineers, and stakeholders to deliver innovative solutions.

Required Qualifications

• 5 years of software development experience using Java and Spring Boot.
• Experience designing, developing, and maintaining web APIs from scratch.
• Ability to understand technical documentation, system design, and architecture documents.
• Experience working in Linux development and server environments.
• Experience with databases such as Oracle, MySQL, MongoDB, Redis, and other RDBMS technologies.
• Experience using Git and Jenkins in a development environment.
• Strong English communication skills.
• Experience working in a collaborative team environment.
• Experience conducting code reviews and design reviews.

Preferred Qualifications

• Japanese language skills.
• Experience with large-scale web services or high-traffic applications.
• Experience with DevOps practices and operations.
• Experience in the travel, transportation, or mobility services industry.

Technology Stack

Backend

Java

Spring Framework

Spring Boot

Spring Security

Spring Data

Spring Cloud Config

Frontend

React

TypeScript

Database & Middleware

Oracle

MySQL

MongoDB

Redis

Nginx

Apache HTTP Server

Apache Tomcat

Infrastructure & Tools

Private Cloud

Jenkins

Ansible

• ELK Stack (Elasticsearch, Logstash, Kibana)

Grafana

JUnit

Apache Maven

IntelliJ IDEA

Why Join This Opportunity?

• Work on large-scale travel and mobility platforms used by millions of customers within a global digital ecosystem.
• Gain end-to-end ownership across development, deployment, operations, and DevOps activities.
• Help shape the future of Mobility as a Service (MaaS) while using modern technologies in a fast-growing engineering team.
• Collaborate with international teams in a global working environment.
• Develop your technical expertise through exposure to high-scale, business-critical systems.

If you are interested in learning more, please feel free to contact me.

📧 Shihoko.Kawamoto@teksystems.com

Shihoko Kawamoto | TEKsystems