Live card checkout
Hosted gateway checkout in production for a multi-language booking platform — card payments taken before the customer lands.
Payments engineering
Payments thatactually settle.
Gateways, billing, payouts, and settlement — engineered into your stack, not bolted on with a plugin.
Card checkout, recurring billing, payouts, and bank-grade payment files — integrated into the software you already run. Reconciled, audited, and built to clear real money.
In production
Real money. Real reconciliation.
Bank-grade settlement
RTGS / pain.001 payment files delivered over secure SFTP, plus a payments console — the settlement layer behind a regulated exchange.
Affiliate payouts
Commission tracking and automated payout requests with ledgering — referral money that reconciles to the cent.
Seypro builds payment integrations — hosted and embedded card checkout, recurring billing, affiliate commission and payout systems, and bank-grade payment-file pipelines (RTGS / pain.001 over SFTP). We've shipped live card payments for a multi-language booking platform and built the settlement and payments tooling behind MERJ Exchange. Every integration is reconciled, idempotent, and audit-logged.
Payment integration engineering — accepting cards, charging on a schedule, and paying money back out, wired into the software you already run. We integrate hosted and embedded checkout, 3-D Secure and tokenisation, webhooks with idempotent retry handling, and the reconciliation that proves every cent landed where it should. Not a checkout plugin dropped onto a template — payment infrastructure engineered for correctness under real load.
Coverage spans collection (hosted gateway checkout, embedded card forms, multi-currency, 3-D Secure, tokenised card-on-file), billing (subscriptions, metered and usage-based pricing engines, dunning, invoicing), and payouts (affiliate commission tracking, marketplace splits, automated disbursements, and bank-grade payment-file pipelines such as RTGS and ISO 20022 pain.001 delivered over SFTP). Every flow is idempotent, audit-logged, and reconciled against a ledger.
Shipped in production: live card checkout for a multi-language booking platform, an affiliate commission and payout system for a SaaS product, and the settlement and payments tooling behind MERJ Exchange, a regulated securities exchange. We work with your existing gateway and bank, not against them — and we hand over code you own.
What we wire up
Collect. Bill. Pay out.
The full money path — accepting it, charging on a schedule, and moving it back out. One integration, reconciled end to end.
Accept payments
Hosted or embedded card checkout, multi-currency, 3-D Secure, and tokenised card-on-file — wired into your existing gateway with webhooks that retry and reconcile.
- Hosted & embedded checkout
- 3-D Secure / SCA
- Multi-currency support
- Tokenisation & card-on-file
- Webhook handling & retries
Bill & pay out
Subscriptions, usage-based pricing engines, affiliate commissions, and automated payouts — ledgered, reconciled, and ready for finance to trust.
- Subscription & recurring billing
- Usage / metered pricing engines
- Affiliate commission tracking
- Automated payouts & disbursements
- Bank payment files (RTGS / pain.001)
Capabilities
Built for the parts that fail in production.
Webhooks that retry. Transactions that can't double-charge. Ledgers that balance. The unglamorous engineering that keeps money correct.
Idempotent webhooks
Gateway callbacks handled with idempotency keys and retry-safe processing — no double-charges, no lost notifications.
Ledger & reconciliation
Double-entry ledgering and automated reconciliation against gateway and bank statements so the books always balance.
PCI-aware design
Tokenisation and hosted fields keep card data out of your servers — PCI DSS scope minimised by architecture, not paperwork.
Audit trails
Every transaction, refund, and payout is versioned and traceable — the evidence regulators and finance teams actually ask for.
Bank file pipelines
ISO 20022 pain.001 / RTGS payment files generated, signed, and delivered over secure SFTP with status polling.
Gateway-agnostic
We integrate the gateway and bank you already use — Mastercard MPGS, regional acquirers, and card-scheme rails.
Rails & tooling
MPGS3-D SecureISO 20022pain.001 / RTGSSFTPWebhooksPCI DSSMulti-currencyBefore you ask.
We integrate the gateway and acquiring bank you already use — card-scheme rails via providers like Mastercard Payment Gateway Services (MPGS), regional acquirers, and standard processors. We work with your existing merchant setup rather than forcing a switch, and we build hosted or embedded checkout depending on your PCI and UX requirements.
Webhooks are processed with idempotency keys and retry-safe handling, so a repeated gateway callback never charges twice. Every transaction, refund, and payout is written to a ledger and reconciled automatically against gateway and bank statements — so finance can trust the numbers without manual spreadsheet work.
Yes. We build subscription and usage-based pricing engines, dunning and invoicing, and outbound flows — affiliate commission tracking, marketplace splits, automated disbursements, and bank-grade payment files (ISO 20022 pain.001 / RTGS over secure SFTP). The full money path: collect, bill, and pay out.
We minimise PCI scope by architecture — tokenisation and hosted fields keep raw card data off your servers, so the sensitive data path stays with the gateway. We design the integration so your compliance burden is as small as the design allows, and document the data flows for your assessor.
Take payments. Keep the books straight.
Tell us your gateway, your currencies, and your payout flow. We'll scope the integration and the reconciliation that keeps it honest.