Scale is a cutting-edge tech company developing tools for the full AI development lifecycle. Their Generative AI Data Engine powers advanced LLMs and generative models through RLHF, human data generation, model evaluation, safety, and alignment. They're seeking a strong Frontend engineer with React experience to join their team. The role involves owning critical parts of products driving millions in revenue, solving customer problems, and working across the entire product lifecycle. Key responsibilities include owning large new product areas, working on backend and frontend stacks, interacting with users, delivering high-quality experiments, and learning new technologies quickly. Ideal candidates should have mastery of React, TypeScript, and CSS, proficient English skills, and experience scaling products at hyper-growth startups. Familiarity with UX/UI principles and experience with DB technologies like PostgreSQL, Elasticsearch, or MongoDB are beneficial.