Financial

From Green Screens to Modern Payments; Digital Transformation for First Data

24 weeks modernizing a core payments system handling 45% of U.S. transactions.

Fiserv analytics dashboard showing weekly sales trends comparing 3.3M GBP in transactions across 576 customers with navigation for reports and terminals

Results

Designed and delivered a modern enterprise web app suite.

Replaced outdated green-screen workflows with 66 redesigned, intuitive screens.

Migrated from legacy COBOL systems to a modern Java backend.

Improved response times and operator experience for one of the largest transaction processors in the U.S.

Highlights / Intro

First Data was running nearly half of all U.S. credit and debit transactions on a decades-old green-screen platform. The system carried heavy tech debt and created inefficiencies for call center operators and employees.

unosquare was brought in to modernize the core experience, creating a payments suite designed for speed, stability, and scale.

Challenge

First Data needed to:

Retire unstable green-screen systems without disrupting critical payment flows.

Modernize workflows for pipeline transactions and workflow management.

Reduce operator response times and improve employee experience across thousands of daily interactions.

Solution

unosquare deployed a cross-functional team to design, architect, and deliver a modern enterprise payments suite:

Scope

Digital modernization, strategy & design, front-end development, enterprise web app, 66 redesigned screens.

Tech Stack

Java backend, Adobe Flex, COBOL migration.

Behind the delivery, our Centers of Excellence added the expertise to keep modernization on track and future-ready.

Design COE translated outdated green-screen interfaces into intuitive, user-friendly workflows.

Business Strategy COE ensured modernization aligned with compliance-heavy payment operations.

Cloud & QA COEs reinforced reliability, testing, and scalability for mission-critical financial transactions.

The result was a system that not only replaced legacy pain points but also laid a foundation for continued innovation in one of the world’s most demanding payment environments.

When legacy systems hold back mission-critical transactions, modernization isn’t optional, it’s urgent.
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