SYLENT
Fintech & Commerce

Payment Integrations

Payment gateway integration, wallet systems and transaction processing for any platform.

Overview

We integrate payment systems that work. Stripe for global card processing, PayMongo for Southeast Asian markets, Dragonpay for Philippine banking channels, and whatever provider your market requires. Every integration handles the edge cases that trip up junior implementations: failed webhooks, partial captures, refund flows, currency conversion and dispute management.

Payment integration is not just about charging a card. It is about building a complete financial flow that handles success, failure, retry and reconciliation gracefully.

Technical Details

Provider Integration

Direct API integration with payment providers using official SDKs and webhook handlers. Abstraction layer that lets you switch or add providers without rewriting application logic. Support for credit cards, digital wallets, bank transfers, QR payments and buy-now-pay-later depending on market requirements.

Webhook Processing

Idempotent webhook handlers that process payment events exactly once even when providers send duplicates. Signature verification for every incoming webhook. Dead-letter queues for failed webhook processing with automated retry. Event sourcing for complete payment lifecycle tracking.

Subscription and Recurring Billing

Subscription lifecycle management including trials, upgrades, downgrades and cancellations. Dunning flows for failed recurring payments with configurable retry schedules. Prorated billing for mid-cycle plan changes. Invoice generation and delivery.

Reconciliation

Automated reconciliation between internal transaction records and provider settlement reports. Discrepancy detection and alerting. Refund tracking across provider and internal systems. Financial reporting with proper accounting period boundaries.

Tech Stack

StripePayMongoDragonpayPythonNode.jsPostgreSQLRedisWebhooksREST APIs

Related Services

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