Joining us onstage as a judge for TechCrunch Disrupt 2021‘s Startup Battlefield will be Yasmin Razavi, general partner at Spark Capital. Her engineering background and fintech chops should make for incisive questions for the founders presenting. Razavi invests in growth-stage enterprise, fintech and developer companies, but her background is until fairly recently an engineering-focused one. She grew up in Tehran, studied engineering at the University of Toronto and got her MBA at Harvard Business School. A stint at McKinsey eventually led to being a product manager at Snap, where she…