Senior Frontend Engineer for Fintech Wallet (Remote)

CookUnity; Buenos Aires; Remote; ARS 127,737,000 - 234,184,000; Full time

Benefits offered by this job

Contractor agreement with payment in U

100% remote work in an international設定

Access to Argentine public holidays

Professional development, learning & …

Job summary

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech project focused on a Digital Wallet and cross-border payments.

You will build top-tier user experiences, translate designs into production-ready features, and leverage AI tools to extend your reach across the stack. You will own features end to end, collaborate with product/design, and ensure performance, accessibility, and scalable frontend architecture while delivering production-grade interfaces for

Qualifications

• Strong hands-on experience with React, JavaScript, and TypeScript.
• Experience building fintech applications, digital wallets, or payment platforms.
• Solid understanding of UX principles, usability, interaction design, and user-centered development.
• Proven track record of building polished, production-ready user interfaces.
• Experience turning Figma designs into working applications.
• Practical experience with AI-assisted coding tools.
• Ability to deliver complete features across frontend and backend boundaries.
• Experience with REST APIs, third-party integrations, and Backend for Frontend (BFF) architectures.
• Strong understanding of frontend architecture, reusable components, and state management.
• Experience working in Agile product development environments.

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

UX principles

Figma designs

REST APIs

Agile

Production UI

AI-assisted coding

Frontend architecture

Tools

Cursor

Claude Code

GitHub Copilot

Job description

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech project focused on a Digital Wallet and cross-border payments.

You will build top-tier user experiences, translate designs into production-ready features, and leverage AI tools to extend your reach across the stack. You will own features end to end, collaborate with product/design, and ensure performance, accessibility, and scalable frontend architecture while delivering production-grade interfaces for