Remote (Working Hours: CST Time Zone) Long-term Contract ASAP Smart Devices Sphere is looking for to join a forward-thinking client developing smart device solutions. Candidates must be available to collaborate during . * Develop application using Angular (must-have) and React * Write scalable, well-tested TypeScript and JavaScript code * Implement responsive design, smooth UI interactions, and dynamic components * Collaborate closely with cross-functional teams to translate product vision into high-quality software * Work with backend teams to integrate APIs and ensure seamless user experiences * Maintain design consistency by contributing to shared UI libraries and component systems * Review code, mentor teammates, and champion frontend best practices * 5+ years of experience in frontend development with a strong focus on Angular * Experience with React and an understanding of component-based architecture * Experience with TypeScript, JavaScript (ES6+), HTML5, and CSS3 * Experience building responsive, mobile-friendly user interfaces * Strong API integration experience (RESTful services) * Familiar with Git workflows, Agile methodologies, and modern frontend tooling (Webpack, ESLint, etc.) * Comfortable working remotely and aligned with CST time zone * Background working with IoT, smart devices, or connected hardware platforms * Experience with Mendix/OutSystems