ReimeiTech
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← API & Integration
Payment Integration

Take the money, every way they pay.

Multi-provider payments — cards, konbini, bank transfer, PayPay, and the local rails of every market you sell in — behind one abstraction, so your product code never has to know who's processing the charge.

The rails we run

One checkout, the right method for every market — read it like a departures board.

  • Cards

    Global
  • Konbini

    JP
  • Bank transfer

    JP / EU
  • PayPay

    JP
  • Apple & Google Pay

    Global
  • GrabPay & local wallets

    SEA
  • SEPA, iDEAL & Bancontact

    EU
01The idea

Your customer's preferred way to pay is the one you don't support yet.

Every market has a method people reach for by reflex. In Japan it's konbini, bank transfer, and PayPay; in Southeast Asia it's a local wallet; in Europe it's SEPA or iDEAL. When that method is missing from your checkout, the customer doesn't pay a different way — they leave. Cards alone quietly cap your conversion in exactly the markets you most want to grow. The fix isn't bolting on one provider after another until the code is a tangle of special cases. It's building one abstraction the whole product talks to, so adding the next preferred method is a configuration change, not a rebuild.

02One abstraction

Your product code makes one call — charge, capture, refund — and never learns who actually moved the money.

Your app

Checkout, orders, subscriptions.

The abstraction
One payment interface

Routing, tokens, idempotency, failover.

Stripe·Adyen·Konbini·PayPay·SEPA
03What you get
Provider abstraction layer
01

Provider abstraction layer

A single internal interface for charge, capture, refund, and status. Add a method or swap a processor behind it and your checkout, order logic, and finance reports stay exactly as they are.

Local-rail support — JP / SEA / EU
02

Local-rail support — JP / SEA / EU

Konbini, bank transfer, and PayPay in Japan; local wallets across Southeast Asia; SEPA, iDEAL, and Bancontact in Europe. The right method shown to the right customer, in the right currency.

Refunds & partial captures
03

Refunds & partial captures

Capture less than you authorised when an order ships short, and issue full or partial refunds through the same interface — with the awkward cases like konbini returns handled explicitly, not improvised.

Reconciliation reports
04

Reconciliation reports

Every charge, capture, refund, and payout matched against what each provider actually settled — across rails and currencies, including async konbini and bank-transfer payments. One view for finance, not five dashboards.

Fallback provider failover
05

Fallback provider failover

When a processor has an incident, the abstraction retries the charge through a healthy one — guarded by idempotency keys so a retry can never become a double charge. Outages cost you nothing; customers never notice.

The charge clears. The code never knew the difference.

Card, konbini, or PayPay — one interface, settled and reconciled the same way.

The moment money changes hands.

Tap-to-pay at the counter.
Tap-to-pay at the counter.
Scanning a code at konbini.
Scanning a code at konbini.
PayPay on a phone.
PayPay on a phone.
A terminal printing a receipt.
A terminal printing a receipt.
Checkout on a handset.
Checkout on a handset.
A card meeting the reader.
A card meeting the reader.
Cash and receipt at the till.
Cash and receipt at the till.
04How we work
1

Map the rails

Which methods your customers actually want, in which markets, and where you lose them today.

2

Design the interface

The one abstraction, the providers behind it, and the routing and failure rules — decided up front.

3

Build & tokenise

Cards and local rails wired in, card data tokenised, idempotency and retries built around every call.

4

Reconcile & verify

Match every charge to its settlement, prove refunds and partial captures, test failover under load.

5

Operate & optimise

Hand over reconciliation reports and routing controls so you can shift volume on cost and add rails over time.

05The stack
Processors
Stripe/Adyen/GMO/Komoju/Braintree
Local rails
Konbini/Bank transfer/PayPay/GrabPay/SEPA / iDEAL
Reliability
Idempotency keys/Backoff & retry/Failover routing/Webhooks
Finance
Reconciliation/Partial captures/Refunds/Payout matching

Questions teams ask first.

Yes — that's a big part of why this work exists. A meaningful share of Japanese shoppers will abandon a checkout that only offers cards, because they expect to pay at a convenience store or by bank transfer. We integrate konbini (Lawson, FamilyMart, 7-Eleven and the rest), furikomi bank transfer, and PayPay, and we handle the parts that make them awkward: konbini and transfers settle asynchronously, sometimes days later, so we model the order as pending until the payment notification lands and reconcile it cleanly when it does.

A method your customers want, missing from your checkout?

Tell us which markets you sell in and which rails you're missing — konbini, PayPay, SEPA, or a second processor for failover. We'll build the abstraction that adds them without your product code ever knowing.