The gender gap in the workforce is even more noticeable when you look at careers in science, technology, engineering, and math. Inhi Cho Suh, GM of Watson Customer Engagement at IBM and Laura Bilazarian, Founder and CEO of Teamable, explain how companies can do a better job recruiting and growing women leaders in technology roles.

"We're able to statistically prove there's no pipeline problem," said Bilazarian. "We've mapped the world of social connections and people that have a presence on the web around work, and there's many many women in tech its just really hard to find them using today's tools."

Women filled 47 percent of all U.S. jobs in 2015 but held only 24 percent of STEM jobs, according to the United States Department of Commerce.

IBM offers a tech re-entry program for women to get back to work after dropping out of the workforce. "We create a 12-week internship for women that may have taken a leave during a particular portion of their personal and professional lives," says Suh. "Through this program last year we graduated 30 women who reentered back into the workforce, and we're looking to have more women as part of this in 2018."