Senior Front-End Engineer (React + TypeScript)

**Before you apply** * CVs must be submitted in English * Remote position * You must be physically living in Brazil **What we are looking for** We're looking for a Senior Front\-End Engineer who thrives on turning complex requirements into clean, intuitive, and lightning\-fast user interfaces. If you've mastered React, understand the fine art of front\-end architecture, and can wrangle massive datasets without breaking a sweat, you might just be the person we're after. This is more than just building buttons and dashboards you'll be architecting the user\-facing core of a sophisticated application, collaborating closely with designers, product managers, and back\-end engineers to create a seamless and powerful user experience. **What you'll do** * Design, develop, and refine high\-performance, responsive, and user\-friendly web applications with TypeScript, JavaScript, and React. * Collaborate across teams from product to design to backend translating ideas into polished, intuitive interfaces that handle complex interactions and large\-scale datasets. * Write code you're proud of clean, well\-documented, and testable. * Push performance to the limit, ensuring smooth rendering, fast load times, and fluid user interactions, even with huge datasets. * Shape the foundation by leading the development and evolution of our design system. **What you bring** * Proven success as a Senior Front\-End Engineer building and scaling sophisticated web applications. * Deep expertise with React and its ecosystem. * Strong grasp of front\-end architecture, design patterns, and complex state management. * Experience creating, maintaining, and evangelising a design system. * Skill in optimising browser\-based applications for speed, efficiency, and reliability. * Experience working in Agile environments and collaborating with cross\-functional teams. * A passion for user\-centred development and a knack for solving tough interface challenges. * Ability to define and negotiate API requirements with back\-end teams to ensure smooth and efficient data flow. **Bonus points for** * Knowledge of computer graphics (2D/3D, CAD, Three.js, WebGL, WebGPU). * Experience with real\-time collaboration tools and data sync frameworks (SignalR, Y.js).