Senior Frontend‑First Fullstack Engineer (React/TS) Remote

Avenga; Municipio de Rincón de los Sauces; Remote; ARS 182,437,000 - 273,656,000; Full time

Benefits offered by this job

Contractor pay in USD

100% remote

Public holidays Argentina

English classes

Referral program

Learning platforms access

Job summary

Darwoft is seeking a Senior Fullstack Engineer with a strong frontend focus to join a high‑impact international FinTech project. You will design and ship agent‑facing experiences using React and TypeScript in a modern modular frontend architecture and collaborate with backend services powering the platform.

Bring 8+ years of software engineering, deep React/TypeScript expertise, and a mindset to leverage AI tools and agentic workflows to prototype, test, and accelerate development.

Qualifications

• 8+ years of software engineering experience with a frontend focus.
• Strong production experience with React and TypeScript.
• Hands-on experience using AI development tools and agentic workflows.
• Ability to use AI as part of the engineering workflow while maintaining ownership over architecture and code quality.
• Experience building complex product interfaces with forms, tables, dashboards, and multi-step workflows.
• Modern frontend practices and component-driven architectures.
• Experience with bundlers like Webpack, Rspack, or Vite.
• Tailwind CSS or similar frameworks.
• REST APIs and OpenAPI-based services.
• Debugging across frontend and backend boundaries.
• Collaboration with Product, Engineering, and stakeholders.
• Advanced English proficiency.

Responsibilities

• Design, develop, and maintain React/TypeScript features across CX domain modules.
• Build reusable UI components, forms, tables, dashboards, and workflows.
• Work with Tailwind CSS, Tremor, Radix/shadcn, Storybook.
• Apply AI-assisted engineering practices to prototype, test, and debug.
• Experiment with AI agents and automated workflows to boost productivity.
• Build data-driven interfaces using TanStack Query, React Router, react-hook-form, and Zod.
• Integrate frontend apps with BFF and backend APIs.
• Work in a micro-frontend architecture with Rspack and Module Federation.
• Collaborate on API design with FastAPI backends and OpenAPI contracts.
• Ensure end-to-end correctness across queues, agents, assignments, and metrics.
• Contribute to authorization-aware UX and gateway permissions.
• Troubleshoot frontend BFF stack with AI-assisted workflows.
• Ensure reliability, accessibility, and performance of critical workflows.
• Participate in code reviews and architecture decisions focusing on type safety and testing.

Skills

8+ years of software engineering

React and TypeScript

AI development tools

AI-assisted workflows

Frontend UI design

Modern frontend practices

Web bundlers (Webpack/Rspack/Vite)

Tailwind CSS

REST APIs

TanStack Query / React Context / hooks

Debugging across frontend/backend

Product/Engineering collaboration

Advanced English

Tools

Cursor

Claude Code

GitHub Copilot

coding agents

AI-assisted specifications

Storybook

Vitest

Refine

react-intl

Docker

Job description

Darwoft is seeking a Senior Fullstack Engineer with a strong frontend focus to join a high‑impact international FinTech project. You will design and ship agent‑facing experiences using React and TypeScript in a modern modular frontend architecture and collaborate with backend services powering the platform.

Bring 8+ years of software engineering, deep React/TypeScript expertise, and a mindset to leverage AI tools and agentic workflows to prototype, test, and accelerate development.