Imagine you’re Lex, an ambitious 31-year old software engineer with some good managerial experience. You’ve just been offered the role of… — Imagine you’re Lex, an ambitious 31-year old software engineer with some good managerial experience. You’ve just been offered the role of Head of Engineering for a hot young series A start-up, reporting directly to the CEO, Meg. Naturally, you’re super pumped: this role puts you in the senior leadership position…