The Senior Engineer - IT will be responsible for developing scalable and robust web applications using Java, React.js/Next.js, and Spring Boot. Key tasks include implementing back-end functionalities, developing responsive front-end user interfaces, and working with microservices architecture. The role involves writing clean code, conducting code reviews, creating RESTful APIs, and collaborating with QA for high-quality software delivery. Troubleshooting and debugging application issues are also essential.