http://recode.net/2015/10/09/twitter-is-planning-company-wide-layoffs-for-next-week/
You have at least 600 H-1B's in engineering/product development according to http://h1bdata.info. Guess who the bean counters will be keeping around when the axe falls?
Time to stop buying into the lies your Silicon Valley overlords are telling you about "not being able to find enough native STEM talent." You probably sincerely believe that because you get so few resumes to look at. Did you ever think your HR department and/or management are purposely filtering applications to achieve their desired effect?
You'll have plenty of time for reading in a few weeks. Try going through all the posts on http://normsaysno.wordpress.com/ to learn a few things Script Kiddie Z and his friends haven't been telling you.