Remote AI-Driven Frontend & UX Engineer

Humand Technologies, Inc.; Buenos Aires; Remote; ARS 85,158,000 - 191,605,000; Full time

Benefits offered by this job

Contractor payment in USD

100% remote work in international set­

Access to Argentine public holidays

Observability modernization project

Professional development and referrals

Job summary

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech company building a Digital Wallet for cross-border payments.

This frontend-first role focuses on crafting intuitive, production-ready wallet features and leveraging AI tools to extend reach across the stack. You will translate UX/UI designs into scalable interfaces, collaborate with design and product teams, and own features end to end while delivering high-quality, accessible code in a fully remote,

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.
• A proven track record of building polished, production-ready user interfaces.
• Experience turning Figma designs into working applications.
• Practical experience with AI-assisted coding tools such as Cursor, Claude Code, GitHub Copilot, or similar.
• Ability to deliver complete features across frontend and backend boundaries.
• Experience with REST APIs, third-party integrations, and Backend for Frontend architectures.
• Strong understanding of frontend architecture, reusable components, and state management.
• Experience working in Agile product development environments.
• Strong communication, problem-solving, and independent execution skills.
• Comfort working hands-on with production code.

Responsibilities

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

Skills

React

JavaScript

TypeScript

Fintech experience

Digital wallets

UI/UX

AI-assisted coding tools

REST APIs

BFF

Agile

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 building a Digital Wallet for cross-border payments.

This frontend-first role focuses on crafting intuitive, production-ready wallet features and leveraging AI tools to extend reach across the stack. You will translate UX/UI designs into scalable interfaces, collaborate with design and product teams, and own features end to end while delivering high-quality, accessible code in a fully remote,