A GenStat developer designs, develops, and maintains statistical software applications using the GenStat programming language. These developers are responsible for creating algorithms to analyze complex data sets, implementing machine learning models, and improving functionalities of the software. They also test and debug the software to ensure it operates efficiently. Additionally, they may be involved in interpreting statistical results, presenting findings to non-technical stakeholders, and training users on how to use the software effectively. Their role is crucial in industries like agriculture, pharmaceuticals, and biostatistics, where large amounts of data need to be analyzed accurately.