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

Fullstack; Rosario; Remote; ARS 139,086,000 - 200,903,000; Full time

Benefits offered by this job

Contractor payment in USD

100% remote work

Argentine public holidays access

Observability modernization project

Professional development & referral

Job summary

Darwoft, a software factory delivering IT staff augmentation, seeks a Senior Frontend / UX Engineer to build a Digital Wallet for cross-border payments. This remote LATAM contractor role focuses on fintech UX, AI-driven tooling, and end-to-end feature delivery across frontend and BFF services.

You will turn designs into scalable, production-ready wallet features, collaborating with product and design teams while leveraging AI-assisted development tools to accelerate delivery.

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 or equivalent UX/UI specifications 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 experience

UX principles

REST APIs

BFF architectures

Agile development

Production code

Communication

Independent execution

Tools

Cursor

Claude Code

GitHub Copilot

Job description

Darwoft, a software factory delivering IT staff augmentation, seeks a Senior Frontend / UX Engineer to build a Digital Wallet for cross-border payments. This remote LATAM contractor role focuses on fintech UX, AI-driven tooling, and end-to-end feature delivery across frontend and BFF services.

You will turn designs into scalable, production-ready wallet features, collaborating with product and design teams while leveraging AI-assisted development tools to accelerate delivery.