Senior/Principal Backend Engineer, ML Data Platform (0→1 Build) This company is an emerging AI and data-infrastructure startup building a next-generation platform for processing large volumes of sensitive, unstructured data. They are hiring a Senior/Principal Backend Engineer to build their machine learning data infrastructure from the ground up. This is a highly autonomous, high-ownership role for an engineer who thrives in ambiguity and can independently architect systems, build pipelines, and design ML experiment frameworks without depending on an existing data science team. The engineeri...