Fintech / Payroll / Crypto
We build fintech systems where the precision of money is non-negotiable: payroll, payouts, wallets, payment rails and crypto flows. ContraPago is our end-to-end fintech ecosystem.
What it is
An ecosystem of coordinated applications: client and admin portals (React), core APIs (ClientCore, CoreBase) and integration services (apiPortal for an MPC wallet + blockchain, apiPayoneer for OAuth and payouts), on PostgreSQL and MongoDB.
Who it's for
Companies moving money at scale: international payroll, mass contractor payouts and crypto operations that need KYC, compliance and audit.
Features
- Payroll and mass payments: payroll processing and disbursements to many beneficiaries.
- Crypto payouts: MPC wallets, on-chain USDT (Polygon, TRON) and a cross-chain bridge (Rhino.fi).
- Payoneer: OAuth integration for global payouts.
- KYC + OCR: onboarding and identity verification.
- AR / AP, billing and invoicing: receivables/payables and documents.
- Reporting and analytics; client and partner management.
Security
- Idempotency and a state machine on every payment; verified webhooks; three-way reconciliation.
- KYC/compliance, RBAC, audit and input validation. Secrets live only in the environment, never in code.
Architecture
Admin (CoreBase API + AdminFront) · Client (ClientCore API + ClientFront) · apiPortal (MPC wallet) · apiPayoneer. Integrates Payoneer, Portal HQ, Rhino.fi, Polygon and TRON.
Stack
React · Node.js · PostgreSQL · MongoDB · AWS · blockchain (Polygon / TRON).