A Data Structures and Algorithms Developer designs, analyzes, and implements algorithms and data structures to solve complex problems. They work on optimizing the speed, efficiency, and performance of systems by choosing appropriate data structures such as arrays, linked lists, stacks, queues, trees, and graphs. They also design algorithms for sorting, searching, and manipulation of data. The developer conducts regular testing and debugging to ensure functionality and efficiency. Their role is vital in the development of software applications, databases, and computing systems, contributing to the overall performance and scalability of these systems.