A ClickHouse developer primarily works with ClickHouse, an open-source column-oriented database management system. They design, develop, and deploy database solutions, ensuring efficient data storage and fast query processing. They are responsible for integrating ClickHouse with other data systems, optimizing its performance, and maintaining data security. They also handle troubleshooting, debugging, and upgrading of the system. They work closely with data analysts and other stakeholders to understand data requirements and translate them into technical solutions. Their role also involves staying updated with the latest industry trends and suggesting improvements to enhance the system's capabilities.