I built a production-ready fintech backend so you don’t have to.

After working on multiple projects, I realized every team keeps rebuilding the same things:

• Payment handling
• Idempotency
• Ledger systems
• Webhooks
• Monitoring

So I packaged everything into one kit:

→ HAYLAYN Backend Kit

Stack:

• NestJS 10
• Prisma
• Double-entry ledger