Backend Engineer - Travel Development Department (TDD)

Job Description:

Department Overview

Rakuten Travel is a leading online travel service in Japan, dedicated to “Making People Happy with Travel”.

https://travel.rakuten.com/

Since our founding in 1996, we have consistently led the industry, challenging the norms and fostering innovation. With growing aspirations to expand beyond borders as a Global Innovation Company, we are not confined to Japan but continue to strive daily to become the world's premier travel reservation service.

At the forefront of the Commerce & Marketing Company, Travel Development Department (TDD) is distinctive for overseeing the entire spectrum of Rakuten Travel's development and operations. We primarily focus on the following key areas:

1. Globalization of Rakuten Travel to compete in global markets

2. Continuous improvement and strengthening Rakuten Travel’s presence in Japan to increase customer satisfaction

We are seeking like-minded individuals who resonate with our purpose. Join us at Rakuten Travel, propose new forms of travel to people around the world, and strive to be pioneers shaping the future of travel. Your passion and creativity will breathe new life into the travel industry, filled with infinite possibilities. We eagerly await your application and potentially invite you to take on challenges in a diverse environment in collaboration with new peers.

In this position, you will be responsible for the development and operation of a wide range of travel services provided by Rakuten Travel, including hotels, air tickets, and package tours. This is a challenging role aimed at leading the travel industry, where you are expected to deliver services using cutting-edge technology to meet the diverse travel needs of today.

Rakuten Travel is among the top online travel sites in Japan, requiring development skills to support its large-scale transaction processing. Particularly during the quarterly Rakuten Super Sale, you will be expected to handle over 150 reservations per second and manage search traffic exceeding 800 queries. The volume of this traffic is anticipated to increase in the future, making the development and operation of systems capable of handling high loads a critical responsibility.

Working at Rakuten Travel offers abundant opportunities for technical challenges and growth, leading to potential career advancement in an attractive position.

Position Details

In this position, you will primarily be responsible for the development and operation of Rakuten Travel's API services. Specifically, you will engage in backend system development using Java and Spring, covering a wide range of tasks from architecture consideration and system design to responding to user inquiries. Collaboration with related teams within the Rakuten Group (such as Payment, Points, Membership) and handling large-scale traffic will also be required. This role offers the opportunity to refine your technical skills while working collaboratively with the team to achieve results. As a backend engineer in this position, you are expected to become a role model for the next generation of engineers and lead the organization's growth.

Work Environment

Development:

Java, Spring Framework, Spring Boot, Spring Data, Spring Cloud Config, JUnit, Apache Maven, IntelliJ IDEA

Middleware:

Oracle Database, Oracle GoldenGate for Big Data, MongoDB, Redis, Elasticsearch, Kafka, RabbitMQ, Kong, Nginx, Tomcat

Infrastructure:

Private cloud Rakuten IaaS (Virtual Machine)

Monitoring:

Jennifer (APM), New Relic (APM), ELK stack (Elasticsearch, Logstash, Kibana), Prometheus, Grafana, Oracle Enterprise Manager, MongoDB Ops Manager, PagerDuty

CI/CD:

Jenkins, SonarQube, Ansible

Others:

Microsoft Teams, Confluence, JIRA, BitBucket, etc.

Mandatory Qualifications:

Technical Skills / Experiences

6+ years of experience with

・API development and operation with Java and Spring Framework

・Microservices architecture

・RDBMS (e.g. Oracle, MySQL) and ORMs

・NoSQL databases technologies especially MongoDB and ElasticSearch

・Cloud configuration or similar technologies

・Load testing, performance measurement and improvement

・Automation testing (e.g. xUnit / xSpec) in large scale

・Web API development on Linux

・Development on IaaS, CaaS, PaaS

Soft Skills / Experiences

・Proactively involves others in order to solve problems or improve the situation(should not be shy or introvert).

・ Having inquiring mind for various issues/items.
Having passion to learn continuously in a fast-moving environment.

・Must be able to communicate effectively with various stakeholders

・Willing to tackle new challenges and drive improvements, NOT satisfied with the status quo and routine work.

・A good team-worker. Promote team-working culture within and outside of the team.

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