Senior AI Fullstack Engineer (React/TypeScript) – Remote

Fullstack; Municipio de Rincón de los Sauces; Remote; ARS 148,250,000 - 232,964,000; Full time

Benefits offered by this job

Contractor agreement with payment in 1

100% remote work

Argentina's public holidays

English classes

Referral program

Access to learning platforms

Job summary

Darwoft is hiring a Senior Fullstack Engineer with a strong frontend focus to join a high-impact international FinTech project building an internal CX platform. You will design, develop, and maintain React/TypeScript features, dashboards, and complex workflows for a remote-first team across LATAM.

You’ll work with AI-assisted development practices, collaborate on API contracts with FastAPI services, and ensure end-to-end correctness in multi-step workflows.

Qualifications

• 4+ years building full-stack web applications and releasing them to production.
• Experience working in a codebase you didn't write, learning its conventions before changing it.
• Hands-on work on workflow software where different user roles see different data, with approvals, task queues or state machines and an audit log or versioned history.
• React, TypeScript and SQL on Azure, including schema design and migrations.
• Daily use of Cursor, Claude Code or a similar AI coding tool on production work, with tests and CI behind it.
• Clear written and spoken English: PRs that say what changed, why, and how it was tested, and tradeoffs explained to another team's engineers.
• Experience delivering in fixed-scope sprints with branches, code review and feature flags.

Responsibilities

• Design, develop, and maintain React / TypeScript features across CX domain modules, including operations tooling, agent presence, inbox workflows, queues, assignments, and internal applications.
• Build and evolve reusable UI components, forms, tables, filters, dashboards, and complex operational workflows.
• Work with technologies and patterns including Tailwind CSS, Tremor, Radix/shadcn, and Storybook.
• Apply AI-assisted and agentic software engineering practices to accelerate prototyping, implementation, testing, refactoring, documentation, and debugging.
• Experiment with AI coding agents and automated workflows to improve engineering productivity and development quality.
• Build data-driven interfaces using TanStack Query, React Router, react-hook-form, and Zod.
• Integrate frontend applications with BFF and backend APIs.
• Work within a micro-frontend architecture using Rspack and Module Federation, respecting domain boundaries and monorepo conventions.
• Collaborate on API design and integration with FastAPI backend services, including OpenAPI contracts and BFF endpoints.
• Ensure end-to-end correctness across workflows involving queues, agents, assignments, conversations, and operational metrics.
• Contribute to authorization-aware UX aligned with gateway permissions and domain-level capability models.
• Troubleshoot issues across the frontend BFF backend stack using both traditional debugging techniques and AI-assisted workflows.
• Ensure the reliability, accessibility, and performance of agent-critical workflows running in production.
• Participate in code reviews, architecture discussions, technical decision-making, and engineering best practices around type safety, linting, testing, and maintainability.

Skills

React

TypeScript

SQL on Azure

AI-assisted development tools

English communication

CI/CD

Tools

Cursor

Claude Code

GitHub Copilot

AI tooling

Job description

Darwoft is hiring a Senior Fullstack Engineer with a strong frontend focus to join a high-impact international FinTech project building an internal CX platform. You will design, develop, and maintain React/TypeScript features, dashboards, and complex workflows for a remote-first team across LATAM.

You’ll work with AI-assisted development practices, collaborate on API contracts with FastAPI services, and ensure end-to-end correctness in multi-step workflows.