This dynamic client is helping push the frontier of LLMs and AI Agents through novel datasets and experimentation. We work on building the most complex infrastructure that powers frontier data creation for agentic and hard reasoning workflows. We work with all 5 of the leading AI labs and are becoming the go-to partner for data infrastructure for YC companies. We have a sharp hockey stick growth rate and are extremely talent-dense, with most of our founding team coming from top IB and quant firms. This company builds the data and evaluation systems powering every frontier AI lab. They scaled from 0 to $100M ARR in 14 months and recently raised a $30M Series A at a $300M valuation. YC-backed with a founding team from top IB and quant firms. They're the go-to data infrastructure partner for leading AI labs and growing on a sharp hockey stick trajectory. As Engineering Manager you'll own a team of 5-10 engineers with a 50/50 split between building core infra and leading people. This is an...