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Open Banking Development Services Built for Fintech Teams

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Bring open banking features to market faster

Connect your fintech product to banking data, payment rails, and regulated ecosystems through secure open banking APIs. Neontri combines engineering, UX, and security expertise to support compliant, scalable delivery.

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Greater reach across banks and markets

A structured integration creates a consistent way to add banking partners and enter new regions, rather than treating every connection as a separate project.

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More freedom to expand the offering

New services and use cases can be added without major changes to the core backend, leaving more room for the roadmap to evolve.

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Higher completion across onboarding and payments

Clear consent, authentication, and data-sharing flows keep users moving through regulated steps and reduce drop-off at critical moments.

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Stable performance as demand rises

The integration handles increasing transaction volumes and real-time account data consistently as usage expands.

What our open banking API services cover end to end

API development and fintech integration

We build API layers that connect your application to payment rails, account data, and banking infrastructure. Integrations are shaped around your technology stack, target markets, and partner standards.

UX design integrated with API delivery

Our UX specialists design consent journeys, authentication screens, and data-sharing disclosures as part of the same process, reducing user friction and avoiding UX issues caused by regulatory complexity.

Integrated BaaS platform engineering

When the roadmap includes embedded financial products, we develop the Banking-as-a-Service layer alongside the integration work so both sides operate as one system.

Ecosystem registry and data-sharing tooling

Our team creates the registry and agreement infrastructure needed to onboard new banking and data partners without rebuilding the compliance layer for each connection.

Secure financial data processing

To protect sensitive data across open banking flows, we embed security controls directly into the processing layer.

Performance optimization for high-volume data

Under realistic transaction volumes and real-time account feeds, our specialists test throughput, latency, and bottlenecks, then address constraints before launch.

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Security, compliance, and performance built into the architecture

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Security architecture for regulated data flows

Storage, processing, transmission, and access controls are defined around the sensitivity of the financial data moving through the system.

Engineers discussing compliance requirements and technical design in front of a large display screen

Compliance-aligned technical design

Applicable obligations are considered alongside data handling, integrations, and product requirements so they shape technical decisions from the outset.

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Architecture and processing documentation

Security controls, processing design, and key architecture decisions are documented, giving internal teams a clear technical record of what was implemented and why.

Production-scale validation

Integration behavior, data processing, and system performance are tested against agreed requirements under production-like conditions.

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What our clients value about working with us

“A solution co-developed with Neontri has reduced the number of queries directed to the central system, resulting in lower infrastructure costs and customer service time.”

Piotr Durakiewicz

Team leader – departament of electronic banking applications

“The IT specialists they provided possessed the necessary experience and required competencies. We recommend Neontri as a trustworthy and reliable business partner.”

Wojciech Moraczewski

Senior Manager

“Neontri’s execution and deep understanding of corporate processes made our project remarkably smooth. Their extensive enterprise experience delivered impressive results from solution to implementation.”

Patryk Dąbrowski

Head of Software Development

“Neontri stood out with their commitment, technical competence, and understanding of KIR’s business needs.”

Robert Trętowski

Vice president

Keep integration issues from becoming launch blockers

Bring us your product, partner, and regulatory requirements, and our experts will turn them into a clear technical path to production.

SCHEDULE A 30-MIN CALL

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From compliance review to a live open banking API in 5 stages

Discovery and compliance mapping

We start with your architecture, integration targets, regulatory obligations, and product priorities. These inputs define the technical boundaries and delivery priorities.
Architecture and security design

Our team defines API flows, data processing, security controls, and scaling requirements. The design is validated against regulatory and technical needs at this stage.
Iterative development

APIs, BaaS components, and UX flows are delivered in increments, with security, compliance, and performance criteria checked throughout.
Testing and compliance validation

We test integration behavior, data handling, and performance under production-like load, then confirm that agreed technical and compliance criteria are met.
Launch and scale support

After go-live, support can continue across uptime, scaling, feature expansion, and changing requirements as the product evolves.

Our technology ecosystem

Define the right open banking scope
for your product and market

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Richard Geerligs

CCO, EUROPE

richard.geerligs@neontri.com

Open Banking Development Services Built for Fintech Teams