The mainstream of my activity is web development. The set of services I provide includes:

• Server-side programming on Python, PHP, Java, C++ using (if needed) frameworks: Django, Flask, Zend, Symfony - database engineering on MYSQL and PostgeSQL - NoSQL document oriented databases (mongo) 
• Client-side development on JavaScript(React.js, Redux etc.)
• Video streaming solutions: from simple audio recording and uploading to live broadcasting on wowza, ffmpeg, red5 - work with 
• Various APIs integration: google services (ads, maps), yahoo, yandex and payment services (paypal, authorize.net)
•   Administrative routine Linux, freeBSD; Apache, MySQL, Nginx, lighttpd etc 
•  Google App Engine (Python SDK) 

And I am continue learning. I like challenging tasks.