Payments & Integrations

Stripe payments, subscriptions and third-party integrations built carefully, with idempotent flows, reliable reconciliation and clear monitoring.

What's included

  • Stripe & subscriptionsIdempotent payment flows and billing
  • IdentitySocial login and JWT sessions
  • Calendar & schedulingICS calendar and booking
  • Storage & mediaCloudinary and cloud storage
  • Webhooks & reconciliationSigned webhooks, retries and a ledger that matches what the payment provider reports
  • Local gateways & taxBank, wallet and tax-authority APIs such as FBR invoicing in Pakistan
  • ERP & accounting syncPayments, invoices and stock posted into your ERP or accounting system automatically
  • MessagingWhatsApp, SMS and email notifications for receipts, reminders and installments

Built and running

Common questions

Do you build subscription billing?

Yes. Stripe subscriptions and one-off payments with idempotent flows, as on OpenInterview.me.

What does an idempotent payment flow mean for us?

If a customer double-clicks, loses connection or the provider sends the same webhook twice, the payment is still recorded once. Nobody is charged twice and your books stay correct without manual clean-up.

Can you connect our existing systems to each other?

Yes. We connect payment providers, CRMs, ERPs, calendars, storage and messaging tools through their APIs, and add logging so you can see every sync and fix a failed one before it becomes a support ticket.

Do you work with payment gateways outside Stripe?

Yes. We pick the provider that works in your market, including local banks and wallets, and keep the payment logic in one place so a provider can be swapped later without rewriting the product.

How do you test payments before going live?

Every flow runs against the provider's test mode first: successful payments, declines, refunds, disputes and repeated webhooks. Senior engineers review the money-handling code before it ships.

Ready to scope your payments & integrations project?

Answer three quick questions and we'll send a written plan covering scope, team, timeline and estimate.

Get started

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