Payment processing software development,
bespoke and owned by you.

We engineer a bespoke, client-owned payment platform end to end — the router, the ledger, the tokenisation boundary, the risk controls, the merchant tooling and the payout path — and hand it over on your infrastructure. This is custom payment processing software, not a SaaS licence. Contracts assign the IP to you from day one, and every architectural choice is documented so your team can extend it after we ship.

Packaged providers sell hosted checkouts and take a share of every transaction. TrustChange is an engineering partner: we build the software that becomes yours, on infrastructure you control, without per-transaction lock-in. The trade-off is honest — a bespoke build takes longer up front, but you keep every line of code, every rule and every reconciliation record, and you can add rails or geographies without renegotiating a licence.

The reference build supports card acquiring with 3-D Secure, SEPA and SEPA Instant, open banking (PIS and AIS) under PSD2 consent rules, crypto pay-in and payout with quote-locking, and local wallet or bank redirect methods per market. New rails land behind the same router and reconcile into the same double-entry ledger, so adding a method later does not fork the platform.

TrustChange is an engineering partner, not a law firm — your advisers set policy, we ship the code and the evidence. SCA and exemption logic sit inside checkout and payout flows. Card data stays tokenised so the PCI DSS scope is kept small, and hosted fields or vaults keep raw PANs out of your services. AML rules, sanctions screening and Travel Rule messaging run inside the transaction path, and every decision writes to a signed audit log.

Yes. Enterprises, marketplaces and platforms that outgrew a hosted checkout use the same platform to bring processing in-house — one integration for the app, one ledger for finance and one reporting surface for internal audit. Payment processing for software platforms typically starts with a router that wraps current providers, then adds a bespoke gateway underneath as new rails or markets come online.

You own the software and the IP from day one. Code lives only in your repositories, the ledger runs on your database, and card data stays inside your PCI boundary. Engineers on both sides work under your identity provider and your access rules, and there is no vendor account that can read production data behind your back. On exit, you keep the platform and can run it with your own team or with different partners.