A Large Scale Systems Developer designs, develops, and manages the infrastructure and systems that handle vast amounts of data efficiently. They ensure system scalability, performance, and reliability, often working with complex databases and processing systems. Their tasks involve optimizing system architecture, implementing algorithms, and resolving high-level computational problems. They also address issues related to data security, storage, and retrieval. They work closely with data scientists and engineers to understand their needs and translate them into system requirements. They are proficient in various programming languages, distributed systems, and cloud-based technologies.