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Banking API Middleware

Connect anything. Orchestrate everything. Control your integration surface.

Velmie’s API middleware layer sits between your channels, core systems, and third party providers, so you can add new capabilities without reworking the foundations of your stack.

Reduce integration overhead and ship faster

Modern financial products depend on many systems that were never designed to work together. Middleware creates a controlled integration layer that standardizes how services connect, how data moves, and how changes are governed, while keeping your core and critical systems stable.

Core capabilities

A single integration layer for your ecosystem

Connect legacy cores, modern cloud services, and specialized providers through consistent APIs and integration patterns, across multiple products and markets.

Orchestration for end to end journeys

Compose multiple backend calls into one business level API, so channels and partners interact with a coherent interface, not a maze of dependencies.

Data transformation and normalization

Translate formats, map fields, and standardize payloads so downstream systems receive consistent, predictable data even when upstream providers vary.

Security, compliance controls, and auditability

Apply centralized security and compliance controls across integrations, with traceability for sensitive data handling and operational review.

Scalability and operational control

Support growing transaction volumes with a middleware layer designed for performance, resilience, and controlled change as new services are added.

What you can enable with the middleware layer

Use the same integration foundation to power multiple product lines.

Card programs

Extend card issuing platforms with additional API connections and local vendor integrations, without fragmenting the channel experience.

Partner bank connectivity and embedded services

Integrate partner services through a governed integration layer, so onboarding a new provider becomes a repeatable process rather than a one off project.

Digital banking, wallets, and new product launches

Launch customer facing products faster by separating channel development from provider specific constraints and back office complexity.

Built for change, not one-time integrations

A point of integration solves a problem once. An integration layer solves it repeatedly. By centralizing orchestration, transformation, and controls, you can modernize incrementally, integrate new services without disrupting existing infrastructure, and reduce time and cost across future launches.

Delivery approach

1. Integration mapping and target architecture

Define the required journeys, systems of record, provider touchpoints, and the operational controls needed.

2. Middleware implementation and connector buildout

Implement orchestration flows, data mappings, and reusable connectors aligned to your security and compliance constraints.

3. Validation, rollout, and operational handover

Test at scale, establish monitoring and governance, and transition to a repeatable onboarding model for new providers and product variants.

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Contact us

Find a solution for your integration challenge and see how the
Velmie API middleware layer fits your stack.

US

447 Broadway 2nd FL
10013 New York

UK


59 St Martin’s Lane, Suite 8
WC2N 4JS London

UAE

Level 3, Building C3 , DWTC, Sheikh Zayed Road,00000 Dubai

Lithuania

Gynėjų g. 14, Vilnius, 03107, Lithuania

Poland

Ul. Emilii Plater 53 Warsaw 00-113

Resources

Solutions

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Velmie®️ is a registered EU trademark and trading name of Rolinus UAB, which is a private limited liability company registered in Lithuania under its registration number 305684690. Rolinus UAB does not offer or provide banking services on its own behalf or for its affiliates and is not a bank, financial or payment institution. All company products, services, trademarks or trade names used on this website are the property of their respective owners and are used on this website for identification or information purposes only. 

© 2012 - 2025 by Velmie

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