A Database Systems Developer designs, implements, and maintains databases. They create data models and database designs, ensuring efficient data storage, security, and integrity. They write complex SQL queries, procedures, and triggers, and perform database tuning and performance monitoring. They also handle database backup, recovery, and troubleshooting. They coordinate with other developers, ensuring database systems support application requirements. Often, they need to understand different database technologies like MySQL, Oracle, or MongoDB. They also need to keep up with advancements in database systems, like cloud-based or NoSQL databases. Their goal is to ensure smooth and efficient data management.