CASE STUDIES
A Checkout.com Flow Web Component integration in strict TypeScript: an Express server creates a payment session, then a server-rendered page mounts the hosted payment widget.
A script that builds a CSV report from API data using streaming and async iteration, then emails it as a rendered attachment.
Three identical TypeScript/Express backends behind an Nginx reverse proxy, set up with docker-compose to make round-robin load balancing observable.
An Express + Sequelize (Postgres) API that issues short-lived JWT access tokens and rotates refresh tokens on each use, storing them per user.
An Express service implementing the Stellar SEP-10 web-authentication handshake: it issues a signed challenge transaction and, once the client returns it signed, verifies it and issues a JWT.