# Database Design & Modeling

> Selected work demonstrating this service.

- [Built the payments and entitlements layer — Stripe alongside Apple and Google in‑app purchase — gating the directory, search and export through an 11‑table access model checked on the server.](https://platform.engineer.company/portfolio/built-the-payments-and-entitlements-layer-96/)
- [Moved slow work off the request path onto a River job queue — 15 worker modules, 8 scheduled tasks and 20 pg_cron jobs — so a request returns while the work behind it carries on.](https://platform.engineer.company/portfolio/moved-slow-work-onto-a-river-job-queue-97/)

<https://platform.engineer.company/services/database-design/>