Remote Senior Frontend Engineer for Fintech Wallet & AI

CookUnity; Tandil; Remote; ARS 103,480,000 - 172,467,000; Full time

Benefits offered by this job

USD contractor pay

Remote work in international setting

Argentine public holidays

Observability improvements in core平台

Professional development and learning

Job summary

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing LATAM fintech environment as a contractor. You will build and refine a digital wallet frontend, turning Figma designs into production-ready UI with a focus on performance and accessibility.

You will work on cross-cutting features across frontend and backend boundaries, using AI-assisted coding tools and modern stacks. Excellent English and autonomous collaboration in a remote, distributed team are essential.

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 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

UX principles

Figma to code

AI-assisted coding

REST APIs

BFF architectures

Agile

Communication

Frontend state management

Job description

Darwoft is seeking a Senior Frontend / UX Engineer to join a fast-growing LATAM fintech environment as a contractor. You will build and refine a digital wallet frontend, turning Figma designs into production-ready UI with a focus on performance and accessibility.

You will work on cross-cutting features across frontend and backend boundaries, using AI-assisted coding tools and modern stacks. Excellent English and autonomous collaboration in a remote, distributed team are essential.