This week on Careers in Discovery, we're joined by Tim Sparey, Executive Chair at Tay Therapeutics and Non-Executive Chair at Concr. Tim shares his journey from early days as a medicinal chemist at Merck to a career spanning business development, CEO roles, and now chairing multiple early-stage Biotech companies. He talks about the shift from operator to portfolio leader, how he evaluates new opportunities, and why capital efficiency is a critical part of Biotech success - especially in the current market. We also dive into Tay’s approach to doing more with less, how Concr is applying AI to reshape precision oncology, and what Tim looks for in founding teams. Along the way, he reflects on the value of learning from setbacks, building trust with investors, and why simplicity, storytelling, and timing make all the difference.