Senior Frontend/UX Engineer– AI-Driven Full Stack (Remote)

Ryzlabs Inc.; Buenos Aires; Remote; ARS 139,086,000 - 216,357,000; Full time

Benefits offered by this job

Contractor payment in USD

100% remote work

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 company building a Digital Wallet and cross-border payments tools.

The role emphasizes frontend-first work, turning UX designs into production-ready features and leveraging AI-powered tools to extend the stack. You will own features end-to-end, collaborate with product and design, and balance user experience with performance and delivery speed, while aligning with Latin American time zones and an international

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 delivering production-ready UI.
• Experience turning Figma designs into working apps.
• Practical experience with AI-assisted coding tools like Cursor, Claude Code, GitHub Copilot.
• Ability to deliver complete features across frontend and backend boundaries.
• Experience with REST APIs, third-party integrations and BFF architectures.
• Strong frontend architecture, reusable components and state management.
• Experience in Agile product development environments.
• Strong communication, problem-solving and independent execution.
• 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 applications.
• Collaborate with product and design teams to improve user journeys and usability.
• Own features end to end from requirements to delivery.
• Use AI-powered tools to speed frontend and full-stack development.
• Build and maintain BFF services to support app requirements.
• Implement API integrations and backend functionality when needed.
• Ensure performance, accessibility and maintainability across the app.
• Participate in code reviews and improve development practices.
• Find ways to simplify development workflows with AI-assisted engineering.

Skills

React

JavaScript

TypeScript

Fintech apps

UX principles

Production UI

Figma designs

AI-assisted coding

REST APIs

BFF architectures

Frontend architecture

Agile

Communication

Hands-on code

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 and cross-border payments tools.

The role emphasizes frontend-first work, turning UX designs into production-ready features and leveraging AI-powered tools to extend the stack. You will own features end-to-end, collaborate with product and design, and balance user experience with performance and delivery speed, while aligning with Latin American time zones and an international