We are seeking an expert-level Senior Engineer with a strong focus on React.js and JavaScript development. The role involves building dynamic, high-performance web applications using React.js and advanced JavaScript concepts (ES6+), ensuring optimal performance and scalability. A key responsibility is pixel-perfect UI implementation, converting complex UI/UX designs into fully functional web interfaces using high-proficiency HTML5 and CSS3, ensuring cross-browser and responsive compatibility. You will implement modular and maintainable styles using modern CSS techniques (Flexbox, Grid, SCSS), with strong knowledge of responsive and mobile-first design. Solid OOP principles should be applied to build modular, reusable, and testable code structures, ensuring maintainability and extensibility across large projects. Basic SQL/MySQL knowledge is required to support frontend data requirements and collaborate effectively with backend developers for API integration. Primary skills include HTML, JavaScript, Jquery, React JS, CSS, and SQL.