Barber has for over a decade been CEO of ATTOM, a company that provides national property data — including tax, deed, mortgage, foreclosure, natural hazard and other inputs — on over 155 million residential and commercial properties in the US. The company, which private equity firm Lovell Minnick Partners acquired in 2019, received additional growth funding in June 2025. ATTOM Nexus, the company’s new platform aimed at simplifying agent access to property and neighborhood data, also launched in 2025.