A Linq-Object developer uses Language Integrated Query (LINQ), a Microsoft .NET framework component, to interact with data sources. Their work involves querying data from different data sources like databases, XML documents, and in-memory objects. They write and debug code, manipulate data, and manage data retrieval for software applications. They also ensure efficient and secure data access and handle data transformations. A Linq-Object developer also optimizes the performance of applications by writing efficient LINQ queries. They often collaborate with other software developers and data managers to integrate LINQ solutions into larger software projects.