Job Description
Business Overview
Rakuten is one of the leading e-commerce companies in the world. Our mission is to empower people and society through the internet while aiming at becoming the Global Innovation Company.

Department Overview
The advertising business is one of four focus areas of Rakuten. Our mission is to increase profit for all Rakuten, by providing high quality marketing services, as a CoE of Ad technology and Ad platform provider. We are always developing and enhancing comprehensive ad platforms, which enables our clients to fully utilize Rakuten's assets as much as possible.

We have a highly motivated, skilled, talented, and approachable team distributed across Tokyo, Singapore, India, and China.

Position
Why We Hire
We are seeking a highly skilled and dynamic full-stack engineer with extensive technical expertise and proven team leadership experience to take ownership of technical responsibilities throughout the entire product development lifecycle. The ideal candidate will excel at solving diverse technical and business challenges while providing mentorship and guidance to other engineers on the team.

This role provides an exciting opportunity to advance your tech career by contributing to the development of multiple products within Rakuten's extensive ecosystem and cutting-edge technology landscape.

Position Details
Project Execution

• Gather and analyze requirements to ensure a clear understanding of project needs
• Translate business requirements into detailed technical specifications
• Design and implement scalable and efficient features
• Perform unit testing, verification, and validation to ensure robust functionality
• Conduct thorough code reviews to maintain high code quality and adherence to standards
• Manage deployment and rollback operations across DEV, STG, and PROD environments
• Monitor systems post-release, perform regular maintenance, and address any issues proactively

Collaboration

• Work closely with engineers, product managers, project managers, and cross-functional business teams to design and develop exceptional features
• Collaborate with a separate QA team and DevOps team
• Collaborate with cross-culture, cross-border development team during the project execution

Always Improve, Always Advance

• Develop a deep understanding of the entire product and system to identify and recommend technical enhancements
• Anticipate future business and product requirements, proactively suggesting system improvements to stay ahead of evolving needs
• Stay ahead of the curve by exploring emerging technologies, evaluating their potential, and creating roadmaps to integrate them effectively

Mentoring

• Mentor junior developers, freshers, and interns, providing guidance and support to help them excel
• Identify key areas for their growth and actively work towards fostering their technical development and career progression

Mandatory Qualifications

• A minimum of 7+ years of proven, hands-on experience as a Software Engineer in software development, demonstrating strong analytical and problem-solving skills
• Extensive hands-on experience in designing and developing large-scale web applications using technologies such as Java, Spring, MariaDB, MongoDB, Kafka, and
• Comprehensive, hands-on experience with Agile development methodologies and Scrum practices
• Proactive, self-driven, and highly motivated individual
• Excellent communication skills, capable of effectively collaborating with both technical and non-technical stakeholders
• A team player with a positive and approachable attitude
• Strong "get-things-done" mindset paired with a sense of ownership and accountability

Technical

• Java spring (boot+batch)
• HTML, CSS, JavaScript
• MySQL/MariaDB
• NoSQL (MongoDB)
• Big Data (Hadoop, Hive, Spark)
• Version Control - Git
• Jira or similar project and task management tool

Desired Qualifications

• React, Angular
• NoSQL (Couchbase, Cassandra, Redis)
• Big Data (Tez, Presto)
• Test Automation - JUnit
• Code Quality - Sonar
• Streaming platform - Kafka, RabitMQ
• CI/CD - Jenkins
• BI Tool - MicroStrategy, Tableau
• Experience with enterprise system architecture design such as data pipeline design
• Domain knowledge of advertisement system architecture and KPIs

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Languages
English (総合 - 3 - 上級)