A Java Algorithms Developer designs, implements, and tests algorithms used in software applications or systems. They leverage the Java programming language to develop efficient and effective algorithms that solve complex problems or enhance software functionality. Their duties include understanding requirements, designing algorithm models, coding, debugging, and optimizing to improve performance. They often work with data structures, such as arrays, linked lists, and trees. They also ensure the quality of their code through unit testing and code reviews. Their goal is to create scalable, maintainable, and high-performing software solutions using their knowledge of Java and algorithms.