A statement from the company said more than 75% of the Fortune 500 was using MariaDB.

“Our innovation, particularly in the cloud, is driving us toward a level of success that surpasses our most aggressive goals," said MariaDB Corporation chief executive Michael Howard.

“MariaDB can now be found supporting the most challenging business applications globally. This will be an extraordinary year in our continued evolution.

"The Redwood City office represents an important milestone for our talented, growing team who now enjoy everything the popular downtown location has to offer, including Caltrain connectivity.”

MariaDB has a second headquarters in Helsinki, Finland, from where its founder Monty Widenius hails.

The statement said the number of employees had doubled in the last 18 months.