Vimal Kumar is the Founder and CEO of Juspay, whose vision is to build interoperable payments tech for the world. Juspay processes over 350 million transactions daily and has done core innovation for UPI in India. Being deeply passionate about open source, he was part of building the open-source payments stack Hyperswitch and the mobility stack Namma Yatri. His engineering philosophy focuses on first-principles thinking and finding approaches for bringing high reliability to large-scale distributed systems, while maintaining the high change velocity and cost effectiveness needed for building everyday utility systems.