When outgoing DocuSign Inc. Chief Executive Keith Krach informed staffers in 2015 that he would step down, they probably didn’t expect that it would take more a year for his replacement to arrive.

After 15 months, however, the electronic signature giant has finally found someone to assume the top post. DocuSign announced today that it has appointed veteran technology executive Daniel Springer as CEO to take over the reins from Krach. He’s joining a company that dominates its market segment, and yet reportedly is still managing to grow transaction volume at a rate of 70 percent year-over-year.

Maintaining DocuSign’s momentum amid the intensifying competition in the eSignature market won’t be easy. The company is facing off against Adobe Systems Inc. and numerous smaller startups that each claim their service is the best in the category. Springer will take over an ambitious international expansion effort launched under Krach’s leadership that is designed to generate new growth in Japan, Brazil and other key international markets.

He’s no stranger to running multinational tech firms. Springer earned his reputation by taking marketing automation provider Responsys public as CEO in 2011 and later shepherding its sale to Oracle Corp. for $1.6 billion. During the following two years, he helped private equity giant Advent International Corp. guide its portfolio companies through their growth efforts.

Given Springer’s background, his appointment will likely rekindle rumors that DocuSign may be preparing to follow Responsys’ lead and hit the stock market after 14 years as a private company. But Springer told Forbes that his priority for the immediate future will be supporting the firm’s international expansion efforts. As for Krach, the initiative’s architect, he’s staying on as the chairman of the board to advise his successor and the rest of the leadership team.

Image courtesy of DocuSign