Creation Ruby on Rails App "Template" w. backend on subdomain, full i18n, basic auth with oath extend, CRUD for Articles for different Roles

I am in need to create a secure reliable and scalable app - for creating the foundation I need help of a skilled and experienced developer creating the related skeleton for me by creating a RoR app Template that may be used for other projects without licensing issues. Stack: - RoR latest - Puma (local) - Heroku - Mandrill API for transactional mails - Postgresql latest - SASS & CoffeeScript - NO Turbolinks GEMs: - Global --> bcrypt, coffee-rails, delayed_job / delayed_job_active_record (unless you know any better), i18n-tasks, pg, rails, sass-rails, secure_headers, - Prod/Stage --> rack-timeout, other heroku related gems (rails_12factor) - dev only --> annotate, better_errors (dev only) - dev & test --> dotenv-rails, guard, guard-livereload, guard-minitest, mini_backtrace, minitest-spec-rails, minitest-reporters, rb-fsevent In specific: - Create a secure and scalable RoR App Template based on latest versions and methodologies that supports subdomains ideally in managed in different folder (for administration purposes - i.e.: [login to view URL]) as well internationalization - Create a simple BackEnd on subdomain ([login to view URL]) with simple user authentication (no devise or other) and authorization (Roles: SiteAdmin (can have more than One), Admin (can have more than 1) - fields, Nav, .. translatable - From backend it must be possible to CRUD Articles on FrontEnd ([login to view URL]) - Articles contain: Title, Body, URL and audience (for display Purposes on FrontEnd. Roles: Member, User, Visitor) - all translatable (English, German, French - scalable to add more languages on demand from within BackEnd GUI) - Create SIMPLE FrontEnd that displays Articles based on BrowserLocale with option (in Navbar) to change language for the visitors/users as well as register/login. - Regarding "Audience" / UserModel: --> Visitor = not registered = unknown user = ANYONE --> User = Registered User with validated mail, full name, nickname/alias, chosen password --> Member = Full qualified User = Same as User but additionally with linked profile (such as linked in, twitter, Facebook, googleplus, xing,...). If a user chooses to signup with any of those services and provide info on all required fields (such as full name, alias, ..., he directly becomes member instead of just a user - Content on FrontEnd to be displayed/no accessible (route to [login to view URL] if user not logged in/authenticated) based on chosen Audience in BackeNd (Member, User, Visitor). Note: Visitor = unknown user = anyone can see related content. - internationalization (in the backend / front end - ideally managed in different folders). As mentioned: I don't need it fancy, I need a secure, scalable skeleton I can start to extend with more features. I found many articles and sample code for above scenario but most do rely on gems such as active admin and devise and pundit or CanCanCan which I all simply do not want to use in order to learn how things work. To ease up bootstrapping, I kindly ask to use Twitter Bootstrap, but keep it minimalistic in order to avoid time on design.