After Facebook's IPO in May 2012, it more than doubled its job listings from about 400 to 860 open positions in a span of just six months, according to jobs tracked by WANTEDAnalytics.
Hiring also doubled at LinkedIn in the 10-month period after it debuted on the New York Stock Exchange in May 2011.
Jobs are booming in the broader Silicon Valley region. According to the Bureau of Labor Statistics, the San Francisco and San Jose region has added 70,000 professional and business service jobs in the last three years.