Senior Frontend Engineer – AI-Driven Fintech Wallet

Fullstack; La Pampa; Remote; ARS 127,071,000 - 190,607,000; Full time

Benefits offered by this job

Contractor agreement with payment in  

100% remote

Access to Argentine public holidays

Professional development

Referral programs

Job summary

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech company focusing on cross-border payments. You will build a Digital Wallet UI, turn UX/UI designs into production-ready features, and collaborate across product, design, and backend teams.

You will work on frontend and backend aspects with AI-assisted tooling, ensuring scalable, accessible, and high-quality interfaces. This remote, LATAM-focused contractor role offers flexible collaboration and learning

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 proven 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, or similar.
• Ability to deliver complete features across frontend and backend boundaries.
• Experience with REST APIs, third-party integrations, and 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 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 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

UX principles

Figma designs

AI-assisted coding tools

Agile

REST APIs

BFF architectures

Cross-functional collaboration

Tools

Node.js

Electron

Tauri

WebRTC

Job description

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech company focusing on cross-border payments. You will build a Digital Wallet UI, turn UX/UI designs into production-ready features, and collaborate across product, design, and backend teams.

You will work on frontend and backend aspects with AI-assisted tooling, ensuring scalable, accessible, and high-quality interfaces. This remote, LATAM-focused contractor role offers flexible collaboration and learning