Senior Frontend/UX Engineer - AI-Driven Fintech Wallet (Remote)

Rootstrap; Buenos Aires; Remote; ARS 108,178,000 - 185,448,000; Full time

Benefits offered by this job

USD payments

Remote work

Argentine holidays

Observability modernization

Professional development

Job summary

Darwoft seeks a Senior Frontend / UX Engineer to join a US fintech project building a Digital Wallet. This frontend-first role focuses on delivering intuitive, scalable wallet features with AI-assisted development support, including BFF services and API integrations.

You will balance UX, quality, and speed while shipping polished interfaces for cross-border payments. The position is a full-time contractor role, remote across LATAM, with USD payments and a strong emphasis on production-grade code

Qualifications

• Expert in React, JavaScript and TypeScript with fintech experience.
• Experience turning UX/UI designs into production-ready interfaces.
• Figma designs converted into working apps, with accessible UX.
• Experience with AI-assisted coding tools listed in the must-have.
• Ability to deliver complete features across frontend and backend boundaries.
• Experience with REST APIs and BFF architectures.
• Strong understanding of frontend architecture and state management.
• Experience in Agile environments and strong communication skills.
• Hands-on with production code and independent execution.

Responsibilities

• Design, develop, and maintain high-quality user interfaces for a Digital Wallet.
• Translate UX/UI designs and product requirements into functional, responsive apps.
• Collaborate with product and design to improve user journeys and usability.
• Own features end to end from requirements to delivery.
• Use AI-powered tools to speed frontend and full-stack dev.
• Build and maintain BFF services supporting 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.
• Find ways to simplify workflows with AI-assisted engineering.

Skills

React

JavaScript

TypeScript

UX design

Figma to code

AI-assisted coding

REST APIs

BFF architecture

Agile

Communication

Production code

Tools

Cursor

Claude Code

GitHub Copilot

Job description

Darwoft seeks a Senior Frontend / UX Engineer to join a US fintech project building a Digital Wallet. This frontend-first role focuses on delivering intuitive, scalable wallet features with AI-assisted development support, including BFF services and API integrations.

You will balance UX, quality, and speed while shipping polished interfaces for cross-border payments. The position is a full-time contractor role, remote across LATAM, with USD payments and a strong emphasis on production-grade code