Retirees Are Making Friends — and Money — With This Handyman Service Created by Millennials by Elizabeth O'Brien Still in his 20s, Sam Gerstenzang has worked for a who’s who of Internet darlings, including BuzzFeed and Alphabet-spinoff Sidewalk Labs. When it became time for something new, his next venture came from an unlikely source. “I was not expecting my next project to come from my grandmother,” says Gerstenzang, of Brooklyn, N.Y.