Payment Solutions
Payment gateway integration and aggregation for eCommerce and enterprise — supporting regional and international payment methods with high-volume transaction handling on scalable cloud infrastructure.
Book a Free ConsultationWhat is payment gateway integration?
Payment gateway integration connects your checkout to a provider such as HyperPay, Moyasar, PayTabs or Checkout.com, so customers can pay with mada, Apple Pay, STC Pay or buy-now-pay-later methods like Tabby and Tamara. Mantiqi builds these integrations for Saudi merchants on hosted payment pages by default, which keeps card data off your servers, and links each successful payment to a ZATCA-compliant e-invoice.
Typical timeline: Gateway selection in week 1, integration build in weeks 2–6, reconciliation tooling in weeks 5–8.
Sources
Why this matters
Saudi payment integration is harder than the gateway docs make it look. Local methods (mada, STC Pay, Tabby, Tamara) each have their own quirks; SAMA cyber framework + PCI DSS requirements add compliance overhead; under ZATCA Phase 2 invoicing, every standard tax invoice is cleared through the FATOORA platform before it is shared with the buyer, and simplified invoices are reported within 24 hours of issue; and once you scale past a few thousand transactions a day, the naive integration patterns the gateway tutorials show start dropping payments under load. Mantiqi has shipped payment integrations and built a high-volume payment aggregator for e-commerce merchants for our client Pay-Sol — we know which gateway behaves how, and we build flows that survive Black Friday traffic and SAMA audits both.
What We Deliver
How we deliver
- 01
Method + gateway selection
Week 1We map your customer mix (B2C / B2B / cross-border), ranking which payment methods you actually need vs which add operational drag, and produce a written recommendation covering gateway, fees per method, settlement timing, and the integration pattern that fits your stack.
- Method × customer-segment matrix
- Gateway shortlist with fee analysis
- Settlement + reconciliation pattern
- PCI scope assessment
- 02
Integration build
Weeks 2–6Gateway SDK integration with hosted payment pages or full server-to-server (Direct API) depending on PCI scope. Idempotent payment intents, webhook handlers with retry, refund + partial-refund flows, and ZATCA invoice issuance triggered by successful capture.
- Hosted-page or Direct-API integration
- Idempotent payment-intent layer
- Webhook handlers with replay + retry
- ZATCA invoice trigger on capture
- 03
Reconciliation + ops tooling
Weeks 5–8Reconciliation pipeline matching gateway settlement files against your orders, exception dashboard for stuck or mismatched transactions, refund queue with approval workflow, and audit-ready transaction history with PCI-safe redaction.
- Daily settlement reconciliation
- Exception dashboard + alerting
- Refund workflow with approvals
- PCI-redacted audit trail
- 04
Scale + monitor
OngoingAs volume grows, monitor authorization rates by method/issuer, A/B test fallback gateway routing, optimize fees by switching method-to-gateway routing per transaction profile. Every routing change is measured against the authorization-rate baseline captured before it went live.
- Per-method authorization-rate dashboards
- Fallback-gateway routing logic
- Quarterly fee + decline-code review
- On-call coverage for payment incidents
Frequently asked questions
Locally: HyperPay, Moyasar, Checkout.com (KSA tenant), PayTabs, Tap, STC Pay, Tabby + Tamara for BNPL. Internationally: Stripe (for cross-border), Adyen (for enterprise multi-region), and direct mada acquirer integrations. We've also built a high-volume payment aggregator on AWS for our client Pay-Sol — so we know what scaling pain looks like from both sides.
Depends on your integration pattern. Hosted payment pages (cardholder data never touches your servers) reduce PCI scope to SAQ-A — minimal compliance burden. Direct API where you handle the card data requires SAQ-D and a full PCI audit. We default to hosted pages unless there's a specific UX or product reason for Direct API, which keeps compliance overhead manageable for most mid-market businesses.
Every successful capture should trigger a ZATCA-compliant e-invoice in real time — that's a hard requirement once you're past Phase 2 wave eligibility. We wire the integration so the gateway's webhook fires the ZATCA clearance call on success, the QR-coded invoice gets emailed to the customer + stored as the legal document, and the merchant gets a reconciled view of payments + ZATCA-cleared invoices side by side. See our ZATCA service for the full flow.
We integrate them the same way as cards — hosted checkout flow with webhook-driven settlement. The interesting work is on the merchant side: BNPL has different reconciliation rhythms (settlement T+1 to T+30 depending on installment plan), partial-refund flows are method-specific, and chargeback rates / fraud profiles differ from card. We build the reconciliation tooling that makes BNPL operationally manageable, not just technically integrated.
Probably. We've shipped systems handling thousands of transactions per minute on AWS with autoscaling + Redis-backed idempotency. The architecture pattern matters more than raw infra — we use queue-based capture flows, circuit breakers around gateways, and per-tenant rate limits to prevent one merchant's flash sale from degrading another's checkout. Tell us your peak TPS and we'll be honest about whether we're a fit.
Still have questions?
Our team is ready to help. Reach out and we'll get back to you as soon as possible.
Free offer
Free payment-architecture review
Send us your current payment setup (gateways, methods, scale, pain points). We'll send back a written review covering your top 3 risks (PCI scope, scale ceiling, reconciliation gaps), recommended gateway / method changes, and a remediation plan. No sales call.
Get the review