Arnaud Weber serves as Engineering Lead at Block, Inc. (NYSE: SQ), where he drives the technical strategy and execution for the company's Class A engineering initiatives. With over 15 years in software engineering and fintech, Arnaud has built a reputation for scaling high-impact systems under intense growth pressures. He joined Block in 2018 after a stint at Google, where he led backend infrastructure teams optimizing global payment processing for billions in transactions. Prior to Block, Arnaud honed his expertise at Stripe, contributing to the architecture of their core API that powers millions of merchants worldwide, and earlier at a Paris-based fintech startup he co-founded, which was acquired by a major European bank. His achievements include securing three patents in distributed systems and real-time data processing, as well as authoring influential papers on microservices resilience presented at conferences like QCon and AWS re:Invent. Under his leadership, teams have consistently delivered 99.99% uptime for mission-critical services. At Block, Arnaud leads a cross-functional team of 50+ engineers focused on enhancing Square's point-of-sale ecosystem and Cash App's peer-to-peer features. His vision emphasizes AI-driven fraud detection and seamless blockchain integrations, positioning Block at the forefront of decentralized finance. Arnaud's collaborative style and commitment to diversity have fostered innovative breakthroughs, earning him internal recognition as a top technical leader.