Senior Frontend & UX Engineer — AI-Driven Fintech Wallet

CookUnity; La Pampa; Remote; ARS 139,086,000 - 231,811,000; Full time

Benefits offered by this job

Contractor agreement with payment in 1

Remote work in an international setup

Access to Argentine public holidays

Job summary

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing fintech ecosystem as a full-time contractor. You will build a Digital Wallet frontend, turning UX/UI designs into scalable features, while leveraging AI-powered tools to accelerate development.

You will work in a remote, international setting, collaborating with product and design teams to deliver polished, production-ready interfaces and improve user experiences for cross-border financial services.

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, and user-centered design.
• Ability to translate Figma or design specifications into production-ready code.
• Experience integrating REST APIs and external services.

Responsibilities

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

Skills

React

JavaScript

TypeScript

UX Principles

REST APIs

Job description

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing fintech ecosystem as a full-time contractor. You will build a Digital Wallet frontend, turning UX/UI designs into scalable features, while leveraging AI-powered tools to accelerate development.

You will work in a remote, international setting, collaborating with product and design teams to deliver polished, production-ready interfaces and improve user experiences for cross-border financial services.