Develop server with Node.js or PHP frameworks: Yii, Zend, Symfony, CodeIgniter
Working with API: YouTube, FB, Twitter, MailChimp, Stripe, PayPal
Development of WordPress themes and plugins
Setuping your DataBases: PostgreSQL, MySQL, MongoDB, FireBase, FireStore
UI of SPA based on Angular, Backbone, React frameworks.
3D application based on Three.js
360 tours based on krpano
Live video web-stream (360 videos also)