Mercari Inc.
2021.11 - Present
Backend/Frontend Engineer → Android Engineer → Frontend Engineer
GCP PHP Go GraphQL Kubernetes SQL JavaScript TypeScript React Next.js Node.js Kotlin Android Jetpack Compose
Backend/Frontend Engineer - Mercari CS Tool
- Worked as a frontend/backend engineer on a multi-platform team which had around 10 members, developing the "Mercari CS Tool" using technologies such as GCP, React, PHP, Go, GraphQL, and Kubernetes.
- Contributed on the "CS Tool backend migration" project, consolidating the legacy backend SQL to an unified GraphQL service.
- Led the team to improve development efficiency significantly using Skaffold. As a result, the reflection time of changes was reduced from 15~30 minutes to 1 just minute.
Android Engineer - Mercari Marketplace
- Served as a key Android engineer in an 8-member (2~3 Android engineers) multi-platform team, developing the "Mercari" Android application using Kotlin and Jetpack Compose.
- Mentored junior Android engineers, fostering their skills and knowledge to enhance team capabilities.
- Collaborated closely with designers and product owners, proposing and implementing numerous user experience improvements for new projects.
Frontend Engineer - Mercari Marketplace
- Contributed as a frontend engineer in an 8-member frontend team, developing the "Mercari" marketplace website using technologies such as TypeScript, React, Jotai, and Next.js.
- Contributed to the success of cross-team projects by leveraging comprehensive understanding of each team to effectively coordinate efforts and deliver results.
- Played a pivotal role as frontend developer for the "My Collection" project, assisting in designing and reviewing the backend APIs and led multiple technical decisions.