Senior Fullstack Engineer: React/TS + AI Tools (Remote)

Oowlish; Neuquén; Remote; ARS 130,675,000 - 192,169,000; Full time

Benefits offered by this job

Contractor payment in USD

100% remote

Argentine holidays

English classes

Referral program

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 Operations Platform.

You will design, develop, and maintain React/TypeScript features, implement AI-assisted workflows, and collaborate across product, engineering, and client teams to deliver end-to-end solutions with auditable data. This is a fully remote contractor role with US-hour core overlap.

Qualifications

• 8+ 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 AI coding tools 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 AI-assisted workflows.
• Ensure the reliability, accessibility, and performance of agent-critical workflows running in production.
• Participate in code reviews, architecture discussions, and engineering best practices around type safety, linting, testing, and maintainability.

Skills

React

TypeScript

SQL

AI tooling

English communication

Tools

Cursor

Claude Code

GitHub Copilot

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 Operations Platform.

You will design, develop, and maintain React/TypeScript features, implement AI-assisted workflows, and collaborate across product, engineering, and client teams to deliver end-to-end solutions with auditable data. This is a fully remote contractor role with US-hour core overlap.