Senior Full Stack Developer — Xperience by Kentico (Commerce)

About Reply

Reply is a leading Consulting, Systems Integration and Application Management company, specializing in the creation and implementation of solutions based on new communication networks and digital media. At Reply, you will be exposed to some of the latest technologies - like Blockchain, Artificial Intelligence, Machine Learning, Cyber Security, Big Data, Robotic Process Automation, or Cloud Computing.

What the job is about? 

100% REMOTE! Attention: Remotely FROM BRAZIL!!!!

About the opportunity:
We are seeking a Senior Full Stack Developer with strong experience in Xperience by Kentico to design, build, and maintain digital experiences with commerce capabilities. This role focuses on implementing custom commerce solutions on top of Kentico’s digital experience platform, integrating external services, and delivering scalable, secure, and extensible solutions across both frontend storefronts and backend systems.

Responsibilities
Design, build, and maintain a custom storefront using modern frontend frameworks such as React and Next.js, including product listing, product detail, search, and filtering experiences.
Develop and support custom cart and checkout flows, including cart state management, shipping and tax integrations, order submission, confirmation flows, and error handling.
Build secure customer account and identity experiences, including authentication, authorization, order history, profile management, address books, and preferences.
Integrate external payment providers such as Authorize.Net, including tokenization, secure payment handling, transaction processing, refunds, reconciliation, and webhook/event handling.
Implement integrations with external commerce and fulfillment systems, including ERP/order management, inventory, fulfillment, shipping, and tracking APIs.
Ensure strong performance, security, and compliance across frontend and backend layers, including secure coding practices and support for PCI-aligned payment implementations.