American Express, the biggest credit-card issuer by purchases, drew from the ranks of Google and Goldman Sachs to bolster its technology unit by hiring Brian Saluzzo and Nik Sathe.

Saluzzo joins Amex as senior vice president of global infrastructure from Goldman Sachs, where he was a managing director and co-head of technology infrastructure, New York-based Amex said today in a statement.

Sathe was named senior vice president and chief technology officer, according to the statement. He worked on the Google Wallet digital payments system, with previous roles at PayPal and JPMorgan Chase, Amex said.

Both men report to Marc Gordon, Amex's chief information officer.