Handshake is building the future of human data for AI. We partner directly with top AI labs to power large language model (LLM) training and evaluation with high-quality, expert-generated data. As AI models become more sophisticated, the demand for specialized human input continues to grow-and Handshake is uniquely positioned to meet it. We power career platforms at 92% of the top U.S. universities, giving us direct access to verified expert talent across a wide range of domains. Our AI team is rapidly building a new generation of human data products-from expert annotation platforms to AI interviewers and seamless payout infrastructure-all designed to accelerate research and improve model performance. We've assembled a world-class team from YC, Notion, Scale, Coinbase, Palantir, and more, and we're working directly with many of the world's leading AI research labs. This is a unique opportunity to join a fast-growing team shaping the future of AI through better data, better tools, and better systems-for experts, by experts. We're looking for a Research Engineer to join our Handshake AI Research team, where you'll help shape what the next generation of AI models can achieve. This is a hands-on, high-impact role focused on post-training methodologies, specialized domain data verification, and creating cutting-edge LLM benchmarks that measure real-world impact.