Job Summary: We are seeking a Mid-Level Frontend Developer with solid experience in React, Node.js, and .NET to develop modern interfaces and integrate Microsoft solutions, also working on the backend. Key Highlights: 1. Develop responsive and scalable web interfaces with React.js. 2. Build and maintain services and APIs in Node.js and .NET. 3. Contribute to architectural decisions and UI/frontend standards. **Code:** 1060 **Job Title:** React Frontend Developer (Remote) **Location:** São Paulo, SP **Professional Level:** Mid-Level **Professional Areas of Expertise:** IT – Development **Description:** We are looking for a Mid-Level Frontend Developer with solid experience in React, and knowledge of Node.js and .NET, to work on developing modern interfaces and integrations with Microsoft solutions. The ideal candidate is someone who masters frontend development but is also comfortable working on backend layers when needed. Responsibilities - Develop responsive and scalable web interfaces using React.js, ensuring high performance and excellent UX. - Build and maintain services and APIs in Node.js and .NET for integration with internal and external systems. - Contribute to architectural decisions and definition of UI and frontend standards. - Write clean, reusable, and well-documented code **Skills:** Technical Requirements - Solid experience with React.js, Hooks, Context API, and state management libraries (Redux, Zustand or similar). - Proficiency in HTML5, CSS3, JavaScript ES6+ and TypeScript. - Experience with Node.js (Express, NestJS or equivalent). - Experience with .NET (C#) development — APIs, services, middlewares, or integration with legacy systems. - Practical experience with REST APIs and best practices for integration. - Experience with micro-frontend architecture. - Knowledge of Git and CI/CD pipelines (preferably Azure DevOps). - Familiarity with containers (Docker) and Azure services (App Service, API Management).