Senior Frontend & UX Engineer — AI Fintech Wallet (Remote)

CookUnity; Tandil; Remote; ARS 127,737,000 - 212,895,000; Full time

Benefits offered by this job

Contractor USD payment

100% remote work in international LaT

Argentine holidays access

Observability modernization project

Professional development & referrals

Job summary

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech company, focusing on a Digital Wallet and AI-assisted development.

You will build production-quality user interfaces, translate requirements into features, and work across frontend and backend boundaries to deliver complete wallet features. You will collaborate with product and design teams to enhance usability and performance, while leveraging AI tools to accelerate development.

Qualifications

• Experience building fintech applications, digital wallets, or payment platforms.
• Strong frontend skills with React, JavaScript, and TypeScript.
• Familiarity with REST APIs and BFF concepts is a plus.

Responsibilities

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

Skills

React

JavaScript

TypeScript

Fintech experience

Digital wallets

Payment platforms

REST APIs

AI-assisted coding tools

Tools

Cursor

Claude Code

GitHub Copilot

Job description

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech company, focusing on a Digital Wallet and AI-assisted development.

You will build production-quality user interfaces, translate requirements into features, and work across frontend and backend boundaries to deliver complete wallet features. You will collaborate with product and design teams to enhance usability and performance, while leveraging AI tools to accelerate development.