Senior Frontend & UX Engineer - AI-Driven Fintech (Remote)

Scaleup; Rosario; Remote; ARS 139,086,000 - 200,903,000; Full time

Benefits offered by this job

Contractor payment in USD

100% remote work

Argentine public holidays access

Observability modernization project

Professional development & referrals

Job summary

Darwoft seeks a Senior Frontend / UX Engineer to join a US fintech project focused on a Digital Wallet for cross-border payments. Remote LATAM contractor role emphasizing frontend-first development, UX excellence, and AI-assisted tooling.

You will own features end-to-end and collaborate across product, design, and backend teams to deliver scalable wallet capabilities. You will transform Figma designs into robust, production-ready interfaces, leverage AI for rapid development, and contribute to

Qualifications

• Experience with React, JavaScript, and TypeScript in production.
• Experience building fintech apps, digital wallets, or payment platforms.
• Strong UX usability and UI design understanding.
• Proven track record delivering polished production UI.
• Ability to translate UX/UI designs into working apps.
• Experience with AI-assisted coding tools (Cursor, Claude Code, Copilot).
• Ability to deliver end-to-end features across frontend and backend.
• Experience with REST APIs and BFF architectures.
• Strong frontend architecture, components, and state management.
• Experience in Agile product development.

Responsibilities

• Design, develop, and maintain high-quality user interfaces for a Digital Wallet.
• Translate UX/UI designs and product requirements into functional apps.
• Collaborate with product and design teams to improve user journeys.
• Own features end to end, from requirements through delivery.
• Use AI-powered tools to speed frontend and full-stack development.
• 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.
• Explore AI-assisted workflows to simplify development.

Skills

React

JavaScript

TypeScript

Fintech apps

UX principles

Production-ready UI

Figma to code

AI-assisted coding

REST APIs

BFF architectures

Agile development

Communication

Independent execution

Frontend architecture

State management

Tools

Node.js

GitHub Copilot

Cursor

Claude Code

React Native

Design Systems

Job description

Darwoft seeks a Senior Frontend / UX Engineer to join a US fintech project focused on a Digital Wallet for cross-border payments. Remote LATAM contractor role emphasizing frontend-first development, UX excellence, and AI-assisted tooling.

You will own features end-to-end and collaborate across product, design, and backend teams to deliver scalable wallet capabilities. You will transform Figma designs into robust, production-ready interfaces, leverage AI for rapid development, and contribute to