Home/Services/Payment Infrastructure

FinTech Engineering

Payment Infrastructure

Idempotent transaction processing, gateway integrations, webhook reliability, and reconciliation systems built for money that must never go missing.

Capabilities

Everything between checkout and the ledger

Gateway & Processor Integrations

Stripe, Razorpay, Adyen, Plaid, and custom PSP integrations with tokenized cards, 3DS, and multi-currency settlement.

Idempotent Transaction Flows

Exactly-once semantics via idempotency keys, durable queues, and safe retries so network blips never double-charge customers.

Webhook Reliability

Signed webhook ingestion, replay protection, ordered processing, and dead-letter handling for payment state changes.

Ledger & Reconciliation

Double-entry ledgers, provider statement matching, dispute workflows, and audit trails for every cent moved.

Architecture

Designed for financial-grade reliability

Payment Orchestration

  • Multi-PSP routing & failover
  • Smart retries with backoff
  • Partial capture & refunds
  • Subscription billing engines

Security & Compliance

  • PCI DSS scoped architecture
  • Tokenization & vaulting
  • Fraud signal hooks
  • Immutable audit logs

Operations

  • Real-time payment dashboards
  • Alerting on settlement gaps
  • Chargeback tooling
  • Runbooks for incident response

Stack We Ship With

StripeRazorpayAdyenPlaidNode.jsGoPostgreSQLRedisKafkaAWSVaultTerraform

Building payment infrastructure?

Email us and we'll walk through your flows, PSP landscape, and reliability targets.

Start a Conversation