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Fintech & Payment Integrations

Services / SaaS, ERP & Fintech / Payment Integrations

Fintech & Payment Integrations

Secure payment processing and financial integrations, gateway setup, transaction handling, and reconciliation, built to handle real money correctly the first time.

What’s included

  • Payment gateway integration, Stripe, PayPal, and region-specific processors
  • Secure handling of transactions, webhooks, and payment state reconciliation
  • Subscription and recurring billing logic
  • Fraud and error handling around failed or disputed payments
  • Compliance-aware architecture, PCI scope minimization, and sound data handling practices

Payment logic that handles edge cases correctly

Fintech app development lives or dies on the edge cases: the failed webhook, the double-charge risk, the payment that partially completes. I build explicitly around those failure modes rather than only the happy path, since that’s where real money gets lost or support tickets pile up.

Getting the integration right, not just working

Payment gateway integration services need to go beyond “the checkout button works in testing”: proper webhook verification, idempotency, and reconciliation against your own records matter more once real transactions are flowing through it.

Relevant work

Payment and transaction-handling logic built into ERP OrbitSync and the trading terminal project. See more on the Portfolio page.

STACK

Laravel REST APIs MySQL Redis

TYPICAL ENGAGEMENT

Scoping call → written estimate → milestone-based delivery. Remote-friendly, working with clients across time zones including the US.

Related fintech, SaaS and trading services

Payment integrations become a core architecture concern when the product depends on subscriptions, deposits, withdrawals, transaction webhooks, or external financial providers. If the application also includes live market data or trading workflows, review trading platform development. For subscription-based products with tenant onboarding and billing, see SaaS product development.

Operational software that combines payments with inventory, orders, or multi-location workflows may fit custom ERP and POS development. Return to the SaaS, ERP and fintech hub for the complete service cluster.

Need secure payment integrations done right?

Hire Me