There’s no substitute for authenticity. In a world of AI, real, genuine human connection matters more than ever. The story of Probook starts as real as it comes. 

After decades on the job, John, a New York City police officer, was injured on duty and couldn’t serve on the force any longer. Some time later, he took up power washing to stay busy and tapped his son, George Eliadis, to help alongside him. George worked weekends and summers in high school, then continued to power wash while he pursued the prestigious M&T dual-degree program at the University of Pennsylvania.

George noticed how much logistics got in the way of what his dad loved most: power washing. Years later, George spent time inside TR Miller, a home services business in Illinois that became Probook’s first customer, and saw the same problems at scale. He learned that what slowed his dad down affected millions of electricians, HVAC techs, plumbers and other workers. The administrative load, from assigning jobs to following up on website inquiries, cuts into already-tight margins and hurts both customer and employee satisfaction. 

AI was supposed to take all that on, but reality hasn’t lived up to the hype. Operators bought a tool for every task, and ended up with a stack that couldn’t talk to itself. Nothing connected; costs ballooned. Customer experience stayed broken, and no one’s life got any easier.

George realized his dad’s life—and an entire industry—would benefit from better, more connected software. So he and co-founders Lewis Zhang and Ben Cervantez launched Probook, the AI Operating System for home services—built around dispatch, the foundation everything else depends on. It is a single platform that shares context across the entire customer experience, automating from intake to dispatch and beyond, and expanding margins for the businesses that keep America’s homes running. Probook is personal for George, of course—but it’s not only George who takes this work personally. All three founders are the real deal. Their authenticity shines through, and it’s the reason why we at Sequoia wanted to partner with them from the seed round and now in their Series A.

Probook works like this: your water heater goes out, and you call a local plumbing company that runs on the platform. Probook’s AI picks up immediately, already knowing each technician’s experience, availability and distance from your home, along with their close rates and ticket sizes. It assigns the right tech to the job, alerts them, and keeps you in the loop with an ETA. You get fast help; the company runs leaner; its team earns more with less stress.

Since childhood, George, Lewis and Ben have been scrappy and relentlessly curious. George is a near lifelong entrepreneur—between power washing jobs, he sold everything from coins to vinyl records. He attended Penn’s M&T program along with Ben, who was valedictorian and captain of his high school football team, and interned at McKinsey during college before dropping out to join Probook. Lewis started coding when he was 7, earned degrees in Electrical Engineering and Computer Science from Berkeley in two years, and was part of the critical player-server matching team at Roblox. Dedication is what drives the team: to say they show up for customers is an understatement. They care deeply about tradespeople and are obsessed with taking the drudgery out of their work, flying all over the country to onboard and work with new businesses in person. And for those companies, Probook has been nothing short of life-changing.

Probook’s growing team is scaling quickly, with a mission to transform the trades. When the nerve center of home services is streamlined by AI that actually drives outcomes, operators can run better businesses and build better lives for their staff. We are proud to support George, Lewis, Ben and team.