Api mangement and MBaaS expert needed -- 2

We need a API managment expert or MBaaS expert to help select the right framework for product and implement it too. We need to: API management User management, Authorization, Authentication Accounting/Rate limiting etc… Load Balancing Integration with bring boot backend CMS for Mobile content (Banner, product catalogue with images) Mobile configuration management like localisation strings or JSON that will be used in mobile app Push notification management Promotion management The same developer /Architect will be involved in bigger project of implementing same along with our team. I will create a separate project for same Few things we are looking into: WSO2, 3Scale, Parse, Firsebase, AWS Mobile hub, Hippo CMS We don’t want to get tied to on any hosting because we want give client self-hosting option if he wants.