Senior Frontend & UX Engineer – AI-Driven Full-Stack Remote

Kinamic; Ciudad de Mendoza; Remote; ARS 103,480,000 - 172,467,000; Full time

Benefits offered by this job

Contractor payment in USD

100% remote

International environment

Learning and development

Job summary

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech building a cross-border Digital Wallet. This is a remote, LATAM-based, independent contractor role with full-time commitment.

You will turn UX/UI designs into production-ready features, apply AI-powered development tools, and own end-to-end frontend work plus supporting backend tasks when needed. Strong React, JavaScript, and TypeScript skills, fintech experience, and a customer‑focused, agile mindset are

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.
• Experience turning Figma designs or equivalent UX/UI specifications into working applications.
• Practical experience with AI-assisted coding tools such as Cursor, Claude Code, GitHub Copilot, or similar.

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 apps

UX principles

REST APIs

BFF architectures

AI-assisted coding

Agile environments

Job description

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech building a cross-border Digital Wallet. This is a remote, LATAM-based, independent contractor role with full-time commitment.

You will turn UX/UI designs into production-ready features, apply AI-powered development tools, and own end-to-end frontend work plus supporting backend tasks when needed. Strong React, JavaScript, and TypeScript skills, fintech experience, and a customer‑focused, agile mindset are