Top Custom Payment Gateway Development Companies

Fintech platforms, digital exchanges, and business systems that handle a lot of transactions or function in restricted environments require unique payment methods more than ever. Custom gateways are distinct from ready-made ones since they are designed to meet the demands of a given business, region, advanced reporting, and deep system integrations.

We picked the firms on this list because they provide payment gateway alternatives that are safe, scalable, and ready to be integrated. The focus is on technical execution, familiarity with financial systems, and long-term ways of working together, not general products or name knowledge. This overview is for fintech executives, product teams, and companies who want to work with other companies to build specialised payment systems.

1) Jappware

Overview:

Jappware is a fintech-focused software development company specialising in custom financial platforms, including payment gateways built for complex, regulated environments. Rather than offering generic integrations, Jappware designs payment systems tailored to specific business models, transaction flows, and compliance requirements.

The company’s experience extends beyond payments into broader financial ecosystems, including custom payment gateway development services, lending platforms, accounting systems, and other data-intensive fintech products. This allows Jappware to build payment gateways that function as an integral part of larger financial architectures rather than isolated transaction tools.

Why they stand out for custom payment gateways:

Jappware focuses on deep system integration and long-term scalability. Its payment gateways are designed to work seamlessly with internal dashboards, reporting layers, compliance engines, and third-party financial APIs. The company places strong emphasis on PCI DSS compliance, secure transaction handling, auditability, and role-based access control. This makes its solutions suitable for fintech startups as well as established financial institutions.

Ideal for:

Fintech companies, enterprises, and financial platforms that require custom-built payment gateways tightly integrated with internal systems and designed for long-term growth. Organisations seeking a development partner with strong domain expertise and a product-oriented approach often choose Jappware for complex payment infrastructure projects.

2) Intellectsoft

Overview:

Intellectsoft is a global software development firm that makes one-of-a-kind digital tools for organisations, such as systems for processing payments and transactions. The company works with a variety of different kinds of organisations and typically assists customers with highly difficult technological and management issues.

Why they stand out for custom payment gateways:

Intellectsoft focuses on scalable, API-driven solutions that help payment systems work with existing corporate platforms. Most of the time, their solutions can handle numerous currencies, do business with people from other countries, and have excellent uptime. The organisation also offers advisory support during the planning and development stages.

Ideal for:

Big companies and associations who need to make their own payment methods as part of their strategy to become digital.

3) Andersen

Overview:

Andersen is an international software development firm with a strong presence in financial and enterprise software projects. The company offers custom development services, including payment gateway engineering for clients with specific technical and regulatory needs.

Why they stand out for custom payment gateways:

Andersen’s strength lies in disciplined engineering processes and long-term delivery capability. Their teams are often embedded into client workflows and focus on reliability, maintainability, and documentation — key factors for payment systems operating at scale.

Ideal for:

Organisations that require stable, long-term development teams to support and evolve custom payment gateways over time.

4) EPAM Systems

Overview:

EPAM Systems is a large technology consultancy with extensive experience in enterprise-grade software development, including financial systems and payment processing solutions.

Why they stand out for custom payment gateways:

EPAM brings deep technical expertise, strong security practices, and experience working with global financial institutions. Their payment gateway projects often involve complex integrations, legacy system modernisation, and compliance with strict regulatory frameworks.

Ideal for:

Enterprises and financial institutions seeking large-scale, highly structured payment gateway solutions backed by extensive engineering resources.

5) ELEKS

Overview:

ELEKS is a software engineering company with experience in fintech and digital commerce platforms. The company delivers custom payment-related solutions as part of broader financial and transactional systems.

Why they stand out for custom payment gateways:

ELEKS focuses on architecture quality, data security, and system performance. Their teams often work closely with product stakeholders to ensure payment gateways align with business objectives and user experience requirements.

Ideal for:

Mid-sized companies and digital platforms looking for custom payment gateway development combined with product-oriented engineering support.

Conclusion

When picking the best custom payment gateway development firm, you need to think about more than just their technical skills. Companies should consider how well the firm knows about financial ecosystems, how much expertise they have with rules, and how scalable they are over time.The organisations listed above have varied talents, from providing large-scale services to producing software that is particular to fintech. 

Companies that are creating payment infrastructure as part of a larger financial platform need to collaborate with a partner who knows both payments and the financial systems that are nearby. Only development teams who know a lot about fintech and focus on unique design should make payment platforms that are safe and ready for the future.