A. Strong knowledge of vanilla JS.
We are searching for creators, not script users.
jQuery skills aren't relevant.
B. Good reverse engineering skills.
Our task is not just about «dealing with legacy code».
It's about «reading obfuscated code with poker face».
C. Mature debug skills.
We need a developer who knows how to use all useful debug techniques.
Not only «[url removed, login to view]()».
Also we happy to see:
D. Experience with popular adsystems.
E. Experience in dealing with adblock.
F. Experience in development of large JS applications.
To filter out cover-letter spammers, please explain in few words, or in few lines of code what is difference between jsonp and xhr.