Senior Frontend AI Engineer Fintech Wallet (Remote)

Fullstack Labs, Inc.; Ciudad de Mendoza; Remote; ARS 103,480,000 - 155,220,000; Full time

Job summary

Darwoft seeks a Senior Frontend / UX Engineer to join a US fintech project focused on a Digital Wallet for cross-border payments. You will build standout user interfaces, convert UX/UI designs into scalable features, and apply AI-powered tools to extend capabilities across frontend and backend boundaries.

You will own features end-to-end, contribute to BFF services, and collaborate with product/design teams to optimize user journeys while maintaining performance and accessibility in

Qualifications

• Strong React, JavaScript and TypeScript skills.
• Experience with fintech apps, wallets, or payments.
• Solid UX understanding and user-centered design.
• Track record of building production-ready UIs.
• Ability to translate designs (Figma) into working apps.
• Experience with AI-assisted coding tools.
• Deliver features across frontend/backend boundaries.
• Experience with REST APIs and BFF architectures.
• Strong frontend architecture and reusable components.
• Experience in Agile product environments.

Responsibilities

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

Skills

React

JavaScript

TypeScript

Fintech experience

UX usability

AI-assisted coding

End-to-end feature delivery

REST APIs

Frontend architecture

Agile

Communication

Production-grade code

Tools

Cursor

Claude Code

GitHub Copilot

Job description

Darwoft seeks a Senior Frontend / UX Engineer to join a US fintech project focused on a Digital Wallet for cross-border payments. You will build standout user interfaces, convert UX/UI designs into scalable features, and apply AI-powered tools to extend capabilities across frontend and backend boundaries.

You will own features end-to-end, contribute to BFF services, and collaborate with product/design teams to optimize user journeys while maintaining performance and accessibility in