Payment system
development
Payment infrastructure built around a ledger that always balances and operations that are safe to retry.
What we build
Four areas where this work is won or lost.
Double-entry ledger
Money recorded as paired immutable entries, so every balance can be proven from its history.
PSP and acquirer integration
Several providers behind one interface, with routing and failover, so a second rail needs no rewrite.
Payouts and refunds
Queued, limited and observable, with status a customer can see and support can act on.
Reconciliation
Daily matching against provider settlements, with mismatches reported rather than discovered later.
How we work
A short loop with a written result at every step.
Map the money
Where balance lives, how funds move and what happens to a half-completed operation.
Build idempotent
Every operation keyed and replay-safe, since duplicate requests and webhooks are certainties.
Prove it
Reconciliation, audit trail and load tests before real money moves.
Stack
Chosen for your product, not for our habit.
Money moving through
a spreadsheet?
Describe how funds flow today. We will model it as a ledger and find where it leaks.
