Hey, thank you! Depending on app, with eSteem it is unique in a way that it is community project. Opensource, anyone literally can join the team! For example, @testz manages translation and we work with almost around 70 translators most of them working to get eSteem in their own language, I consider them also part of team so in short yes we have a team! :) As for implementation, currently eSteem is hybrid implementation, not fully native, if we feel a need for moving to native, we will, but for now hybrid approach is more efficient for us.