Iurii Uses: #Stripe

HTPBE.TECH – Internal Admin Dashboard

Role-gated admin dashboard for the HTPBE? SaaS platform – real-time KPIs, per-user quota tracking, and a zero-dependency bar chart.

vatnode.dev – EU VAT Validation API

Developer-first SaaS API for EU VAT validation via VIES with Redis caching, change monitoring, and webhook notifications.

pi-pi.ee – B2B E-commerce for Waterless Urinal Systems

i18n B2B e-commerce platform for waterless urinal products across 32 European countries with automated VAT handling, PDF invoicing, and CRM integration.

pikkuna.fi – E-commerce for Vinyl Curtains & PVC Products

E-commerce platform with 30 locales, product configurators, AI chatbot, and fully automated order flow: Stripe → Zoho CRM → Airtable → Mailgun → PDF.

Why a Node worker writes every confirmed order to Airtable alongside the primary database, and what belongs in that snapshot and what doesn’t.

How to wire an external accounting or bookkeeping API into a payment flow, and why the call belongs in the queued worker, not the webhook handler.

Subscription billing edge cases Stripe glosses over: proration, dunning, the state machine, cancellation timing, refunds, VAT, and webhook ordering.

Stripe to Mollie migration in production: mandates instead of Subscriptions, thin webhooks, no proration, no portal, no Tax. What you rebuild yourself.

Real-time Next.js admin dashboard: TanStack Query polling, Zustand for filter state, Sentry error boundaries per panel, and a zero-dependency bar chart.

PostNord API and Zoho Desk automation for EU e-commerce, and the gotchas to watch for: 200 OK empty arrays, EU data center URLs, token caching.

E-commerce order automation that cut 160+ hours/month of manual work to zero: Stripe webhook to VAT invoice and tracking in under 2 minutes.

40+ point production SaaS checklist: auth, Stripe billing, PostgreSQL, rate limiting, email, monitoring, and security – with honest 8-week build estimates.

Stripe webhook production architecture: idempotency keys in PostgreSQL and Redis, a BullMQ queue, and signature verification in Next.js App Router.