As a Senior Data Developer at Nielsen Marketing Cloud, you will design, build, and manage data architecture for various projects, ranging from serverless functions to large-scale big data pipelines. Your focus will be on creating highly scalable, high-performing, and cost-effective systems, continuously seeking improvements. You'll work with the latest cloud and data technologies and contribute to innovative projects. The role involves processing massive datasets (55TB+ daily) and building robust data warehouses. Experience with Scala, Spark, Python, and SQL is crucial.