The Most Powerful Women in Banking

As global chief information officer, Beer is responsible for the bank's global technology systems and infrastructure and manages a $17 billion budget. She oversees more than 63,000 technologists and has 18 direct reports.

Kerrins is leading efforts to simplify the technology used at the $1.9 trillion-asset Wells Fargo, including an investment in four new data centers.

Guild has seen the "complexity of attacks against the sector and our customers" rapidly increase for the more than three decades that she herself has been working at the intersection of banking and technology. 

Brady has worked to make Key's tech team more diverse, which she sees as crucial to fostering innovation and new ideas.

Nine years into her current position, Smith has shepherded multiple tech investments at Zions, including a 400,000-square-foot corporate campus in Midvale, Utah, devoted to technology.