• Make a new membership micro system for the new HKTVmall VIP 2024 membership, using Spring Boot, MySQL, RabbitMQ and AWS SQS.• Rewrite the Fluentd config to address the issue of log fields not being aggregated properly

• Using Terraform to build the cloud infra for our Indonesia project• Rebuild the stock level management system of HKTVmall with K8s cluster, redis cluster and spring boot• Make a new system for merchants to send and receive messages and push notification with K8s

• Music team, forcing on B2B music services UtaPass (うたパス) and HMVmusic• Rebuilt the UtaPass search system, optimized for Japanese, added features of album and artist search to let on-demand music mode became possible• Adopted to Azure AD login, containerization and built the gitlab CI to migrate our internal CMS and API from the on-premises environment to Azure• Redesigned the login process so that multiple devices logged in but only one device can play music at the same time became possible• Automatically created DRM version of the songs by using AWS Lambda, SQS and S3• Implemented the playlist search system in HMVmusic

• Japan music service UtaPass (うたパス) team• Created sets of radio crawlers to support free tier service to be launched

• Created the price comparison website Priceholic.• Developed a distributed crawler system with Python and RabbitMQ to implement real-time global price comparison search.• Speeded up the search function at least 2x faster with Elasticsearch.• The only full time backend developer.