Senior Frontend UX Engineer

***🎨 Senior Frontend UX Engineer*** ***📍 Location: Remote In Brazil*** ***💼 Level: Senior*** ***🛠️ Tech Stack: JavaScript, React, Node.js, TypeScript, AWS*** ***Type: Open for PJ \& CLT*** **About the Role** We are seeking an experienced **Senior Frontend UX Engineer** to design, build, and enhance modern web applications and micro\-frontend interfaces. This role requires deep hands\-on experience with **JavaScript, React, component design** , responsive UI development, and cloud deployment using **AWS** . You will work on applications that support content operations, media management, and internal workflows. This position also involves collaboration with cross\-functional teams and contributes to architecture, design, and UI/UX prototyping. **Key Responsibilities** * Create and modify **mocked UI screens** and wireframes using existing or custom components. * Develop and refine **React components** , web components, and reusable UI libraries—with unit tests. * Implement **responsive UX** patterns across devices and browsers. * Participate in **architecture and design discussions** for upcoming features. * Conduct **code reviews** and ensure coding best practices for junior developers. * Work collaboratively with Product, Program Management, Engineering, and QA teams. * Provide accurate and realistic **LOE (Level of Effort)** estimates during PI planning. * Prototype new frontend and cloud technologies to improve efficiency and reduce operational cost. **Must\-Have Skills \& Experience** * **5\+ years** of professional experience in software engineering. * **Deep expertise in JavaScript and Node.js.** * **2\+ years** hands\-on experience building applications with **React** or similar frameworks. * Strong understanding of **frontend architecture** , component design, hooks, state management, and lifecycle events. * Experience building **high\-performance, scalable, responsive** web applications. * **2\+ years** deploying applications to **AWS or GCP** (S3, Lambda, ECS, or similar). * Strong experience with: * Redux or similar state management * REST APIs * Git \& version control * TypeScript * npm \& modern frontend tooling * Excellent communication, critical thinking, and problem\-solving skills. * Ability to work effectively within a **globally distributed team** . **Nice to Have Experience** * Bachelor’s or Master’s degree in Computer Science or Engineering. * Experience with **Web Components, LitHTML** , or component design systems. * Exposure to **Go (Golang)** . * Experience in **streaming/VOD** environments. * Knowledge of **CI/CD pipelines** , GitHub Actions, Kubernetes, or DevOps workflows. * Experience with **micro\-frontends** and large\-scale UI orchestration.