Senior Frontend Engineer - AI-Driven Fintech (Remote)

Fullstack; Tandil; A distancia; ARS 108.178.000 - 169.994.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Contractor in USD

Remote work

Public holidays in Argentina

Professional development

Observability modernization

Descripción de la vacante

Fullstack is seeking a Senior Frontend / UX Engineer to join a fast-growing LATAM fintech project as a full-time contractor. You will build Digital Wallet-style interfaces using React, JavaScript and TypeScript, turning designs into production-ready web apps.

You will collaborate with product and design teams, apply UX best practices, and leverage AI-assisted coding tools, REST APIs, and BFF patterns to deliver robust features. This role is 100% remote in Latin America with USD compensation.

Formación

• Must have hands-on experience with React, JavaScript and TypeScript.
• Experience building fintech apps, digital wallets, or payment platforms.
• Strong understanding of UX principles, usability and user-centered design.
• Proven ability to deliver production-ready user interfaces and high-quality code.
• Experience turning Figma designs into working applications.
• Familiarity with AI-assisted coding tools (Cursor, Claude Code, Copilot).
• Experience with REST APIs and Backend for Frontend (BFF) architectures.
• Experience working in Agile product environments.

Responsabilidades

• Design, develop, and maintain high-quality user interfaces for a Digital Wallet.
• Translate UX/UI designs into functional, intuitive applications.
• Collaborate with product and design teams to improve user journeys and usability.
• Own features end-to-end from requirements through delivery.
• Utilize AI-powered tools to speed up frontend and full-stack development.
• Build and maintain BFF services that support app requirements.
• Implement API integrations and backend functionality when needed.
• Ensure performance, accessibility, and maintainability across the app.
• Participate in code reviews and improve development practices.
• Find ways to simplify workflows with AI-assisted engineering.

Conocimientos

React

JavaScript

TypeScript

Fintech experience

Digital wallets

Payments platforms

UX best practices

Production-ready UI

Figma to code

AI-assisted coding

REST APIs

Backend for Frontend

Agile

Communication

Herramientas

Node.js

Design systems

Authentication security

React Native

Descripción del empleo

Fullstack is seeking a Senior Frontend / UX Engineer to join a fast-growing LATAM fintech project as a full-time contractor. You will build Digital Wallet-style interfaces using React, JavaScript and TypeScript, turning designs into production-ready web apps.

You will collaborate with product and design teams, apply UX best practices, and leverage AI-assisted coding tools, REST APIs, and BFF patterns to deliver robust features. This role is 100% remote in Latin America with USD compensation.