Senior Frontend/AI-Driven Fintech Engineer (Remote)

Toloka; Municipio de Rincón de los Sauces; Remote; ARS 155,220,000 - 258,701,000; Full time

Benefits offered by this job

USD contractor payment

Remote work in international setting

Argentine public holidays

Observability modernization project

Professional development and learning

Job summary

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech firm building a Digital Wallet for cross-border payments.

The role emphasizes frontend-first development, translating UX/UI designs into scalable wallet features, and leveraging AI tools to extend the stack, including BFF services and API integrations. You will balance user experience with technical quality and delivery speed, ensuring accessibility and performance while collaborating with product and design

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 into working applications.

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, interactions, and usability.
• Own features end to end from requirements through delivery.
• Use AI-powered tools to speed up frontend and full-stack development.
• Build and maintain Backend for Frontend (BFF) services that support requirements.
• Implement API integrations and supporting backend functionality when needed.
• Ensure consistency, performance, accessibility, and maintainability across the app.
• Participate in code reviews and improve development practices.
• Find ways to simplify workflows through AI-assisted engineering.

Skills

React

JavaScript

TypeScript

Fintech experience

UX principles

Production-ready UI

AI-assisted coding tools

REST APIs & BFF

Agile development

Frontend & backend delivery

Tools

Cursor

Claude Code

GitHub Copilot

Job description

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech firm building a Digital Wallet for cross-border payments.

The role emphasizes frontend-first development, translating UX/UI designs into scalable wallet features, and leveraging AI tools to extend the stack, including BFF services and API integrations. You will balance user experience with technical quality and delivery speed, ensuring accessibility and performance while collaborating with product and design