Financial Services & Fintech · Accelerated Guest Checkout as Conversion Infrastructure
Accelerated Guest Checkout as Conversion Infrastructure
Supporting the identity and processing substrates behind lower-friction purchase flows
The Client · A global digital-payments company
Overview
A global digital-payments company engaged Taller to build and stabilize the onboarding and payment-processing foundations beneath its guest-checkout product. Taller’s scope spanned the unified onboarding platform, the payment-processing modernization, and full-stack commerce engineering roles.
The Problem
The company’s guest-checkout product ran across major commerce platforms through an identity-linked vault and embeddable checkout system. Keeping it reliable at scale depended on the foundations beneath it: the onboarding and identity flows the product extended, and the payment-processing platform where it first launched. Both needed modernization.
The Solution
Taller modernized the two foundations the guest-checkout product depended on. The first was the unified onboarding platform: an identity-and-prefill flow engine built on a modern Java/Spring Boot stack. The second was the payment-processing modernization: stabilizing the Ruby on Rails platform, refactoring legacy code, introducing automated deployment through Ansible, and leading a phased AWS migration. Around these, Taller supplied full-stack SDK, JavaScript, and web engineering roles supporting the company’s broader commerce engineering.
The Impact
The payment-processing modernization ran with zero downtime through the AWS migration, cut deployment times by 40%, and sped up feature integration by 30%. The guest-checkout product built on these foundations:
+ of guest shoppers converting
better conversion vs. shoppers not using the product
minutes to complete checkout
reduction in checkout time
