A BSON developer works with BSON (Binary JSON), a computer data interchange format mainly used for storing and representing data structures and arrays in MongoDB database. They design, develop, and manage data schemas, implement data storage solutions, and work on data manipulation and retrieval. They also ensure data integrity and security. They may need to troubleshoot issues related to BSON data storage and work on performance optimization. They often collaborate with other developers to integrate BSON data storage and retrieval solutions into software applications. They also need to stay updated with advancements in BSON technologies.