Migration project converting a legacy Windows-based automotive transaction system into a modern web application. Co-led backend as Dev Lead, designed AI Agent workflow reducing overhead by 70%.
Enterprise-grade online store system for a globally recognized F&B brand in Japan. Resolved critical Serverless infrastructure issues — reducing ElastiCache peak connections by 97.9% and boosting email delivery from 68% to 99.9%.
Cloud-based POS and retail chain management platform supporting store operations including ordering, billing, inventory, discount management, and data synchronization across HQ and store nodes.
I started my career as a backend engineer at SupremeTech, an IT outsourcing company delivering software for Japanese clients across e-commerce, healthcare, and automotive industries.
Over 2+ years, I grew from writing production-grade APIs to leading backend development as a dev lead — owning architecture decisions, database design, mentoring a 25-person team, and shipping AI workflow automation that cut overhead by up to 70%.
When I'm not building, I'm writing — I published an AWS Lambda blog series that accumulated 10,000+ views, and I enjoy sharing what I've learned about serverless architecture and practical engineering.
SupremeTech Co., Ltd
SupremeTech Co., Ltd
I'm always interested in hearing about new opportunities, collaborations, or just having a conversation about design and engineering.