React Developer with Next.js

About the Position

We are looking for two Frontend Software Engineers (Junior to Middle level) to join a cross-functional squad on the Payments Platform. This is a hands-on execution role: building and maintaining checkout and payment interfaces with React, componentizing UI consistently with the design system, integrating APIs/BFFs with backend and product, and caring for performance, accessibility and the secure handling of customer and payment data. The engineer works closely with business experts, UX/UI designers and the infrastructure/delivery teams, owning the quality and reliability of what they ship.

About the Project

The client is building its new Payments Platform: a modular, cloud-native platform that connects customer experience, business and technology across every market in the region. On the customer-facing side, the platform drives conversion through frictionless and one-click checkout, local payment methods and currencies, and a loyalty wallet enabling hybrid miles + money payments; underneath it adds smart routing, automated reconciliation and new revenue models such as subscriptions and BNPL. The frontend is built with React on a shared design system, integrating REST APIs and BFFs exposed by Java/Spring Boot microservices on Google Cloud, with CI/CD, observability and security-by-design practices. AI-assisted development is part of the team's engineering workflow.

Responsibilities

• Develop customer facing payment interfaces with React using clean and maintainable code
• Maintain checkout and payment interfaces in line with established design patterns and SOLID principles
• Componentize UI consistently with the design system
• Integrate REST APIs and BFFs in collaboration with backend and product teams
• Optimize frontend performance and reliability across delivered interfaces
• Apply accessibility and SEO good practices in frontend development
• Design unit and end to end tests for frontend features
• Participate in code reviews to support code quality
• Release changes safely using feature flags
• Collaborate with UX and Product teams on conversion improvements and A and B experiments
• Follow security and data handling guidelines for sensitive payment and customer data
• Collaborate with infrastructure and delivery teams on CI and CD pipelines
• Monitor production and help resolve incidents
• Participate in Agile ceremonies
• Document technical solutions

Requirements

• 2+ years of professional frontend development experience with React
• Solid knowledge of JavaScript
• Knowledge of HTML
• Knowledge of CSS
• Understanding of SOLID principles applied to frontend code
• Understanding of common design patterns applied to frontend code
• Experience integrating REST APIs or BFFs
• Experience with automated testing practices
• Familiarity with Git based workflows
• Familiarity with CI and CD concepts
• Fluency in Spanish

Nice to Have

• Experience with TypeScript
• Experience with end to end testing
• Experience with Next.js
• Experience with Webpack or similar build tooling
• Experience working with design systems
• Experience working with component libraries
• Awareness of Core Web Vitals
• Awareness of WCAG
• Awareness of secure handling of sensitive data
• Basic SQL
• English for documentation and international collaboration

Technologies

React, JavaScript, TypeScript, HTML, CSS, Next.js, Webpack, REST APIs, BFFs, Java, Spring Boot, Google Cloud, CI/CD, Git, SQL, Core Web Vitals, WCAG, feature flags, unit testing, end to end testing