Marcus Liu builds the operating systems that turn early-stage companies into scaled, investor-ready organizations.

As Chief of Staff to the CEO at Quantelix, a Caltech quantum-biosensing spin-out, Marcus is a founding-team member who owns the commercial and operating side of the company. He leads customer discovery and go-to-market, business partnerships, finance operations, and the operating cadence, spanning engineering, product, finance, and business development as the company advances toward commercialization.

Before Quantelix, Marcus was Chief of Staff to the SVP of Global Sales at Avalara, where he led strategic initiatives for a $1.3 billion global sales organization, directing executive planning, operational strategy, forecasting, and board reporting. Earlier, he built and scaled go-to-market systems at InStride, developing revenue-operations infrastructure, implementing AI-powered sales technologies, and redesigning strategic programs that influenced more than $10 million in projected sales conversion. Across his career, Marcus has specialized in building repeatable operating systems that enable organizations to scale from early-stage growth through enterprise execution.

Marcus holds a Bachelor of Commerce from the Sauder School of Business at the University of British Columbia and completed executive studies in Business Strategy and Financial Performance at INSEAD. He is passionate about applying emerging technologies - including AI and quantum technology - to solve complex real-world problems and accelerate scientific innovation.