A Big Data Analytics Developer designs, develops, and maintains big data solutions. They collect and analyze large volumes of data, translate findings into business strategies, and build data processing systems to handle the functionality. They use languages like Java, Python, and SQL, and tools like Hadoop, Spark, and Hive to manage and analyze data. They also ensure system security and data privacy. Their work supports decision-making in businesses by providing insights from data. They collaborate with data scientists and other stakeholders to understand their data requirements and to provide accurate, timely, and relevant information.