工藤 健太

- Designed and implemented a billing system using the Stripe API, responsible for both the backend and frontend. Establishing a foundation for monetising the service. - Tech: TypeScript, React, GraphQL, PostgreSQL

- Enabled one of our prospective partners to integrate with us by working closely with CTO using Golang, gRPC, Redis, and Cloud Pub/Sub. - Looked after and delivered a project to introduce a new identity check service from the tech side generating 3% of the entire revenue.

- Developed a new payment system that reliably handles 100k+ tx/yr, and migrated 100% of tx from the legacy system using Go, Kubernetes, Terraform, Kafka, and GraphQL. - Kept the company legally compliant before the card payment regulation changes became effective by imple

- Enhanced customer experience by enabling them to generate MyHermes return labels in the app collaborating with team members, CS team, and business side. - Delivered faster bank transfer functionality that decreased bank transfer lead time from 1 week to 1 day since requested using PHP. - Tech: PHP, GCP