A Computer Science developer designs, writes, tests, and debugs software applications. They use algorithms, data structures, and principles of computer science to create solutions for various problems. This involves understanding user requirements, building prototypes, and refining the final product based on feedback. They also maintain and improve existing software, ensuring it remains efficient and up-to-date. Developers often specialize in specific areas, like web development, game development, or data science. They must also stay abreast of new technologies and programming languages. Their work is a blend of creative problem-solving, technical expertise, and continuous learning.