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

Halo Recruiting; Buenos Aires; Remote; ARS 120,727,000 - 172,467,000; Full time

Benefits offered by this job

Payment in USD

100% remote—international team

Access to holidays

Professional development

Job summary

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech project focused on a Digital Wallet for cross-border payments. This frontend-first role emphasizes turning UX/UI designs into scalable features, with AI-assisted development tools to extend reach across the stack.

You will own features end to end, contribute to BFF services, API integrations, and ensure accessible, performant UI across devices. Remote LATAM, full-time contractor, USD payment.

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 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 (BFF) 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, 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

UX principles

Figma designs

AI tools

End-to-end features

REST APIs

Frontend architecture

Agile

Communication

Tools

Node.js

Design systems

Job description

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech project focused on a Digital Wallet for cross-border payments. This frontend-first role emphasizes turning UX/UI designs into scalable features, with AI-assisted development tools to extend reach across the stack.

You will own features end to end, contribute to BFF services, API integrations, and ensure accessible, performant UI across devices. Remote LATAM, full-time contractor, USD payment.