Remote Senior Frontend/UX Engineer — FinTech Wallets

EPAM Systems Inc; Municipio de Rincón de los Sauces; Remote; ARS 85,158,000 - 170,316,000; Full time

Benefits offered by this job

USD contractor payment

100% remote

Argentine holidays access

Professional development

Observability modernization

Job summary

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech company that is simplifying cross-border payments. You will build and maintain a Digital Wallet UI, turning UX/UI designs into intuitive, production-ready features, and you will use AI-powered tools to extend frontend and backend work.

This is a contractor, remote role in LATAM. You will own features end-to-end, collaborate with product and design teams, and help raise UI quality, performance, and

Qualifications

• Strong hands-on experience with React, JavaScript, and TypeScript.
• Experience building fintech applications, digital wallets, or payment platforms.
• Solid understanding of UX principles and user-centered development.
• Proven track record of production-grade user interfaces.
• Experience turning designs into working applications from Figma specs.
• Practical experience with AI-assisted coding tools (Cursor, Claude Code, Copilot).
• Ability to deliver features end-to-end across frontend and backend boundaries.
• Experience with REST APIs and BFF architectures.
• Experience in Agile environments and strong communication.

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

Digital wallets

UX principles

UI production

Figma designs

AI-assisted coding

REST APIs

BFF architectures

Agile

Communication

Independent execution

Tools

Cursor AI

Claude Code

GitHub Copilot

Node.js

REST API tooling

Job description

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing U.S. fintech company that is simplifying cross-border payments. You will build and maintain a Digital Wallet UI, turning UX/UI designs into intuitive, production-ready features, and you will use AI-powered tools to extend frontend and backend work.

This is a contractor, remote role in LATAM. You will own features end-to-end, collaborate with product and design teams, and help raise UI quality, performance, and