Senior Software Engineer (Staff Engineer)

Rakuten; Singapore; On-site; SGD 150,000 - 210,000; Full time

Job summary

Rakuten Asia Pte. Ltd. in Singapore's Central Business District leads regional initiatives, driving value through advertising product development, strategy, and data management to support Rakuten Group’s global ecosystem.

This Staff Engineer role emphasizes architectural leadership and end-to-end product development, leveraging a modern stack and AI-augmented workflows. You will own the development lifecycle, mentor engineers, and collaborate across Japan, Singapore, India, China, and the UK to

Qualifications

• 8+ years of professional software engineering experience, leading complex web applications.
• Expertise in Java (Spring Boot/Batch) and cloud-native architectures (GCP: BigQuery, DataProc, Composer).
• Proficient in relational (MariaDB/MySQL) and NoSQL (MongoDB) databases.
• Strong ownership, communication, and ability to distill complex constraints into business insights.

Responsibilities

• Project execution and engineering excellence across end-to-end delivery.
• Strategic innovation and productivity improvements.
• Collaboration across cross-functional teams.
• Mentorship and shaping technical culture.

Skills

Java (Spring Boot/Batch)

Cloud-native architectures

Data strategy

AI-augmented engineering

System design

Soft skills & ownership

Tools

Git

Jira

BigQuery

DataProc

Composer

MariaDB/MySQL

MongoDB

Job description

Job Description:

Rakuten Group, Inc. is a global leader in internet services and has a diverse ecosystem spanning across e-commerce, fintech, communications and more serving approximately 1.8 billion members worldwide. Founded in Tokyo in 1997, the Group operates in over 30 countries and regions with more than 30,000 employees.

Based in Singapore’s Central Business District, Rakuten Asia Pte. Ltd. serves as the regional headquarters for Asia, driving value through areas such as advertising product development, product strategy, and data management to support Rakuten Group’s global ecosystem.

Learn more at: https://global.rakuten.com/corp/

The Global Ad Technology Department (GATD) manages the whole of the advertising systems that power Rakuten. We are a cross-functional and data-driven organization working together in a diverse team spread across five countries: Japan, Singapore, India, China and UK.

GATD Website: https://corp.rakuten.co.jp/careers/feature/adtech/en/

The APS Team boasts a highly motivated, skilled, talented, and friendly team spread across Tokyo, Singapore, India, and China. We are looking for someone who can quickly integrate and collaborate effectively with our team.

We are seeking a Staff Engineer to join our team and help us define the next generation of our advertising platform. This is not just a coding role; it is a position of architectural and technical cultural leadership.

You will own the end-to-end product development lifecycle, leveraging a modern tech stack and AI-augmented workflows to deliver high-impact solutions. We are looking for a technologist who doesn’t just keep up with the industry, but shapes it—someone who thrives on building scalable systems, mentoring the next generation of engineers, and integrating AI to push the boundaries of productivity and software quality.

If you are a builder who values technical rigor, thrives in cross-functional environments, and is eager to contribute to Rakuten’s expansive global ecosystem, we want to talk to you.

Responsibilities:

• Project Execution & Engineering Excellence




• Strategic Innovation & Productivity




• Collaboration & Cross-Functional Impact




• Mentorship & Technical Culture

Requirements:

• Experience & Impact: 8+ years of professional software engineering experience, with a proven track record of leading complex, large-scale web application projects from inception to production.




• Architectural Mastery: Deep hands-on expertise inJava (Spring Boot/Batch)and Cloud-native architectures (GCP ecosystem: BigQuery, DataProc, Composer). Ability to design for scale, performance, and high availability.




• Data Strategy: Strong proficiency in both relational (MariaDB/MySQL) and NoSQL (MongoDB) databases, with the ability to choose the right data storage strategy for specific architectural needs.




• AI-Augmented Engineering:




• System Design:




• Soft Skills & Ownership: A “get-things-done” mindset with demonstrated accountability for system health and team output. Excellent communication skills, with the ability to distill complex technical constraints into business-friendly insights.

Technical Proficiencies

• Languages & Frameworks: Java (Spring Boot/Batch), JavaScript/TypeScript (HTML5/CSS3).




• Data & Infrastructure: MariaDB/MySQL, MongoDB, GCP (BigQuery, DataProc, Composer).




• Tools & Process: Version Control (Git), Agile/Scrum, Task Management (Jira).