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E-Commerce Development

Payment Integration

Payment integration connects your commerce system to payment processors — Stripe, PayPal, Klarna, Mollie, SEPA, crypto rails — so customers can transact. Beyond simple checkout, modern payment integration includes subscription billing, split payments, multi-currency, localized payment methods per country, and reconciliation with your financial systems. Every unsupported payment method is a conversion lost.

Why It Matters

Offering the right local payment methods can increase conversion by 15-30% in specific markets. German customers expect bank transfer and SEPA. Dutch customers expect iDEAL. Turkish customers expect local card schemes. Building for one market misses the others.

Problem It Solves

Removes the payment friction that kills conversions at the final step. If a customer reaches checkout and does not see their preferred payment method, they abandon. Payment integration ensures they always find a path to complete.

How We Approach It

Melexsoft integrates payment systems across all major European providers — Stripe, Adyen, Mollie, and crypto payment rails. We handle the PCI compliance considerations and reconciliation logic so your finance team can close their books accurately.

Related Terms

E-Commerce Development

E-commerce development is building the technical infrastructure that powers online sales — product catalogs, shopping carts, checkout flows, payment processing, order management, and integrations with fulfillment and ERP systems. A well-built e-commerce system is not just a website; it is a revenue engine with every component optimized for conversion and scale.

ERP Integration

ERP (Enterprise Resource Planning) integration connects your e-commerce platform to your business operations system — synchronizing inventory, orders, invoicing, shipping, and financial data in real time. Without ERP integration, you run on manual data entry, which breaks at scale. With it, a sale in your online store immediately triggers inventory updates, invoice generation, and fulfillment workflow.

Crypto Payment Systems

Crypto payment systems enable businesses to accept cryptocurrency — Bitcoin, Ethereum, stablecoins, and others — as payment for goods and services. This goes beyond adding a "pay with crypto" button; production crypto payment systems include automatic settlement, multi-currency conversion, fiat off-ramping, tax reporting, and fraud prevention. The use case is strongest for cross-border transactions where traditional payment rails are slow and expensive.

API Development

An API (Application Programming Interface) is the contract that lets software systems talk to each other. When your checkout talks to Stripe, when your CRM syncs with your ERP, when your mobile app loads data — that is APIs at work. Well-designed APIs are the infrastructure layer that enables integration, automation, and scale.

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The Problem

Removes the payment friction that kills conversions at the final step. If a customer reaches checkout and does not see their preferred payment method, they abandon. Payment integration ensures they always find a path to complete.

How We Solve It

Melexsoft integrates payment systems across all major European providers — Stripe, Adyen, Mollie, and crypto payment rails. We handle the PCI compliance considerations and reconciliation logic so your finance team can close their books accurately.

14 days

Average time to first results

3×

Average conversion uplift

0

Long-term contracts required

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