A man got fired from his job, was unemployed for 10 months, watched his savings crash 75%, and somehow built one of crypto's biggest exchanges. > In July 2017, Siemens laid off Hayden Adams, a 24-year-old mechanical engineer. > He had no software engineering career to fall back on. > His friend Karl Floersch told him Ethereum was the future and convinced him to learn smart contract development. > Hayden spent two months learning to code. > Then Karl showed him an idea from Vitalik Buterin about how people could trade tokens without a traditional exchange matching buyers and sellers. > Hayden started building a prototype. Called it Uniswap. > By April 2018, he'd been unemployed for 10 months and the crypto he was living on had lost over 75% of its value. > Most people would've started looking for another job. > Hayden booked a flight to South Korea to attend a crypto conference. > He didn't even have a ticket to the event and was turned away at the entrance. > Then he ran into Karl, who introduced him to Vitalik Buterin. > Vitalik pulled out his phone and read Hayden's smart contract right there. > He adviced him to apply for an Ethereum Foundation grant. > Hayden applied and got the grant which was valued at around $100,000 on paper. > After $ETH's price dropped, its actual value was closer to $55,000–$60,000. > He kept building. > On November 2, 2018, Uniswap launched on Ethereum. > Today, it's one of the most important decentralized exchanges in crypto, allowing people to trade tokens without relying on a traditional centralized exchange. A man lost his job, watched his savings collapse, and built one of crypto's biggest financial platforms. Imagine if he'd just updated his CV and moved on.