Personalized career development is no longer a perk for the privileged few at the top. An intelligent mentoring app called Ellen matches mentors and mentees from all levels of the organization. Launched by San Francisco-based NextPlay.ai, the Ellen app is popular with a growing number of major companies worldwide, including in the U.S. and Asia. NextPlay.ai was among the HR startups that recently participated in the SAP.iO Foundry San Francisco.