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

Rootstrap; Neuquén; Remote; ARS 137,974,000 - 241,454,000; Full time

Benefits offered by this job

Contractor paid in USD

100% remote work

Argentine public holidays

Involvement in observability moderniz.

Professional development and referral

Job summary

Darwoft is seeking a Senior Frontend / UX Engineer to join a U.S. fintech company building a Digital Wallet. This frontend-first role focuses on translating UX/UI designs into scalable features while using AI-powered tools to extend the stack, including BFF services and API integrations.

Remote work from Latin America is supported, with strong emphasis on user-centric fintech experiences. You will collaborate with product and design teams, own features end to end, and contribute to

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 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.
• 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 experience

UX principles

UI polish

Figma to code

AI coding tools

Full-stack delivery

REST APIs

BFF architectures

Frontend architecture

State management

Agile

Communication

Production-ready code

Tools

GitHub Copilot

Cursor

Claude Code

Job description

Darwoft is seeking a Senior Frontend / UX Engineer to join a U.S. fintech company building a Digital Wallet. This frontend-first role focuses on translating UX/UI designs into scalable features while using AI-powered tools to extend the stack, including BFF services and API integrations.

Remote work from Latin America is supported, with strong emphasis on user-centric fintech experiences. You will collaborate with product and design teams, own features end to end, and contribute to