18 Best Payment Gateway Integration Companies in Europe (2026)

Gilzor develops custom web and mobile software with payment gateway integration included among its development capabilities. Its payment work covers connecting applications and online platforms with external processors, implementing checkout functionality, and supporting both one-time transactions and recurring payment models.

Payment functionality can be delivered as part of a broader product build rather than as an isolated connector. Gilzor also handles business analysis, frontend and backend engineering, QA, deployment, and ongoing product support, allowing payment functionality to be developed alongside the application's wider architecture. 

Elogic Commerce concentrates on ecommerce system development and integration. Its payment gateway work includes connections with Stripe, Braintree, Adyen, Worldpay, Authorize.net, and PayPal, alongside support for multi-currency transactions and payment data synchronization with accounting and ERP environments.

The wider integration practice covers Adobe Commerce, Shopify Plus, BigCommerce, Salesforce Commerce Cloud, and commercetools. Elogic also connects commerce platforms with ERP, CRM, PIM, and other business systems, allowing payment and transaction data to move between storefronts and operational software. 

Net Devs works with enterprise software, web platforms, and API-heavy systems built on .NET, JVM, Node.js, Python, and Go. Its portfolio includes authenticated portals that bring several external services into one environment, with integrations covering payment functionality, schedules, assignments, identity tools, and other connected systems.

Backend architecture, cloud infrastructure, frontend engineering, testing, and software modernization are also part of the company's scope. This allows transaction features to sit naturally within larger portals and business applications where payment data must interact with internal platforms or third-party services.

scandiweb builds ecommerce integrations for Magento, Adobe Commerce, Shopify, and other commerce environments. Its Magento integration practice explicitly includes connections to Stripe, Adyen, PayPal, and regional gateways, with work covering tokenization and payment reconciliation.

The company also develops custom API integrations when an existing connector is unsuitable. Payment providers form part of a much larger integration ecosystem covering ERP, CRM, PIM, subscriptions, search, marketplaces, shipping, and other systems, which suits stores where payments are one component of a complex commerce architecture.

Itexus approaches payment integration primarily from the fintech engineering side. Its API integration services cover Stripe, Adyen, PayPal/Braintree and other financial APIs, with technical work involving tokenization, idempotency, 3-D Secure, multi-currency payments, reconciliation, refunds, chargebacks and payouts.

Payments can also be connected with banking, open-finance, identity verification, KYC/AML, credit, and other financial services. Itexus works with payment functionality as part of broader fintech workflows involving transaction processing, financial data, compliance, and external financial APIs. 

DNA Solutions works on payment infrastructure for transaction-critical enterprise systems. Its gateway integration services cover payment service provider connections, card and SEPA flows, 3DS authentication, tokenization and reconciliation.

The Belgian consultancy also works on billing and charging platforms, system integration, legacy modernization and custom software. Its payment engineering emphasizes failure handling, PSP differences, transaction consistency and reducing the amount of cardholder data handled directly by the client's application.

Magebit develops ecommerce systems with payment and financial service integrations forming a dedicated part of its Adobe Commerce work. Its services cover payment gateway integration and orchestration, buy-now-pay-later functionality, financing at checkout, open-banking connections, direct debit, 3-D Secure, fraud controls and saved-card functionality.

The company works across Adobe Commerce and other ecommerce technologies and maintains partnerships with payment technology providers, including Mollie. Magebit has European offices in Riga, London and Valencia, giving merchants several regional points of contact for ecommerce development and integration projects.

OSKI Solutions develops custom payment integrations for web applications and larger business platforms. Its published payment work includes connections with processors such as Stripe, Adyen and PayPal, as well as regional acquiring services.

Projects can involve recurring billing, marketplace payouts, checkout development, 3DS flows, webhook processing and reconciliation. OSKI also works on API integration, cloud infrastructure and connections between payment functionality and ERP, CRM or other business software, allowing transaction workflows to remain part of the wider application architecture.

Vaimo works primarily with digital commerce platforms and includes payment systems among the integrations it implements for merchants. Its published ecommerce material references payment platforms such as Klarna, Adyen and Vipps, while its composable commerce technology provides connectors for both Stripe and Adyen.

Payment projects sit alongside broader commerce work covering frontend development, platform architecture, integrations and international expansion. Payment integrations can be coordinated with regional storefronts, checkout experiences, frontend architecture, and other commerce services within the same digital commerce environment. 

Mobian Studio focuses on mobile and web products for ecommerce and fintech projects. Its payment-related capabilities cover digital wallets, peer-to-peer payment platforms, mobile payment solutions, billing functionality, and applications that connect with payment gateways and support multiple transaction methods.

The studio also works with Shopify stores and custom ecommerce applications, combining payment functionality with broader customer-facing features. On mobile projects, billing and transaction flows can be incorporated directly into iOS, Android, and cross-platform products alongside other application services.

WebMeridian offers dedicated Shopify payment gateway integration services, including gateway selection, implementation and optimization of the store's payment process. The agency also works on broader Magento and ecommerce development projects.

Its payment offering is particularly centered on commerce rather than standalone fintech infrastructure. Developers can integrate a gateway into an existing store, configure transaction functionality and continue supporting the ecommerce platform after launch. WebMeridian operates from locations in Ukraine, the UK and Germany.

Dinarys builds ecommerce software and connects commerce platforms with external business services. Payment integrations listed within its ecommerce offering include Stripe, Adyen, Braintree, PayPal, Klarna, mobile wallets and buy-now-pay-later services.

Its development scope also includes marketplaces where seller onboarding, commission rules, escrow logic and multi-party transactions need to work alongside payment infrastructure. ERP, PIM, OMS, CRM, logistics and marketplace integrations can be handled within the same commerce ecosystem.

Lengreo develops ecommerce websites where payment gateway integration can be incorporated directly into the platform. Its work covers the broader project cycle, including planning, design, development, testing and support, so checkout functionality can be developed together with the rest of the customer journey.

The agency also works on custom storefronts, ecommerce features, checkout modifications, migration and integrations with external systems. These services can be delivered together with payment processing as part of a wider ecommerce rebuild or website development engagement. 

DigitalSuits combines ecommerce development with custom integrations for Shopify and other software environments. Its Shopify services explicitly cover payment gateway connections, local payment methods and BNPL options, including custom integrations when standard applications do not support the required workflow.

The team also develops ecommerce applications, marketplaces and custom software. Payment systems can be connected alongside ERP, CRM, inventory, fulfillment and marketing tools, which can simplify projects that require several parts of an ecommerce stack to exchange data reliably.

BitBag has direct experience developing payment gateway integrations for ecommerce platforms based on Sylius. Published work includes payment integrations for ING Pay, Mollie and Adyen, covering cards, digital wallets, local payment methods, refunds, multiple currencies and other transaction features.

Its projects go deeper than configuring existing extensions. BitBag has developed gateway plugins and API integrations that allow payment providers to operate within the Sylius ecosystem, including work on payment-method management and partial refund functionality.

SoftPro provides custom web applications and business software using technologies such as .NET, Node.js, Python, PHP, Azure, and AWS. Its engineering work spans backend systems, integrations with existing business software, and ecommerce-oriented platforms that support online commercial and transactional processes.

The company's portfolio also includes social-commerce concepts that combine product presentation, customer interaction, content management, and secure transaction functionality. Custom backend engineering and systems integration can support payment-related workflows that need to exchange data with other parts of a business platform.

Hatimeria develops ecommerce systems on Magento, Adobe Commerce, Shopify, BigCommerce and other commerce technologies. Its integration capabilities include payment systems alongside ERP, CRM, shipping and other services, with Stripe among the technologies shown in its ecommerce integration stack.

The agency also has practical experience implementing Apple Pay for an ecommerce client. Its published work also covers payment gateway connections involving Braintree, Adyen, and Stripe within Magento environments, together with Apple Pay implementation for ecommerce. 

On Tap provides ecommerce development and systems integration services for Magento, Adobe Commerce, Shopify and other commerce platforms. Its Magento integration work covers connections with payment and finance platforms alongside ERP, CRM, PIM, WMS, shipping and marketplace systems.

The company supports standard integrations as well as custom API-based connections when an off-the-shelf extension is insufficient. Its Magento integration services cover payment and finance platforms, while its POS offering supports connections with processors such as Square, Stripe, and Dojo. Payment data can also be connected with other operational and commerce systems.