👋 Hello, I’m Ryan!
I’m a Software Engineer based in Tokyo, Japan, currently working at Fast Retailing. With nearly a decade in the tech industry, I’ve had the privilege of working with some of Southeast Asia and Japan’s leading tech companies.
What I Do
I’m deeply passionate about backend engineering — building robust, scalable systems that power modern applications. I also have extensive experience in Data Engineering and Cloud Infrastructure, particularly with GCP and AWS.
There’s something incredibly satisfying about architecting systems that can handle millions of requests while remaining resilient and maintainable.
💼 Career Timeline
Fast Retailing
Software Engineer · Jul 2025 - Present
📍 Tokyo, Japan
Building the future of global retail technology.
Rakuten
Engineering Manager, Catalog Enrichment · May 2024 - Jun 2025
📍 Tokyo, Japan
Managing Catalog Data Enrichment Engineering Group, building solutions to enrich catalog data to improve search, recommendations, and overall user experience.
Data Engineer · Dec 2020 - Jun 2025
📍 Tokyo, Japan
Built Catalog Item Enrichment for Rakuten Group Commerce Business, improving data searchability and analysis. Managed team infrastructure and architecture.
Tech: Java, Python, Kubernetes, GCP, Apache Beam, Dataflow, VueJS
Traveloka
Software Engineer · Sep 2017 - Dec 2020
📍 Jakarta, Indonesia
Worked with the Transport Team building Flight Search and Booking Platform, managing 15+ microservices with high traffic. Early engineer on the cross-selling feature enabling cross-product purchase flows.
Tech: Java, AWS, Redis, Memcached, Terraform, DynamoDB, RDS
OnlinePajak
Junior Software Engineer · Mar 2017 - Aug 2017
Junior Web Developer (Intern) · Mar 2016 - Mar 2017
📍 Jakarta, Indonesia
Developed tax filing solutions for Indonesian SMEs, helping businesses streamline their corporate tax obligations.
🎓 Education
Universitas Bina Nusantara (BINUS)
Bachelor’s Degree in Computer Science · 2013 - 2017
- Google Student Group - Social Media Division
- VP of IT at Binus Student Learning Community (BSLC)
- Cyber Security Community
🛠 Tech Stack
Languages: Java, Python, Go
Cloud: GCP, AWS, Kubernetes
Data: Apache Beam, Dataflow, BigQuery
Tools: Terraform, Docker, Redis
🌐 Languages
- 🇬🇧 English
- 🇮🇩 Indonesian
- 🇯🇵 Japanese
Let’s Connect
Follow me on Twitter / X for my daily journey, tech insights, and random thoughts on software engineering.
Connect with me on LinkedIn for professional updates!
This website is built with Hugo — a fast and flexible static site generator that I absolutely love.