The typical AT&T Big Data Engineer salary is $1,10,347. Big Data Engineer salaries at AT&T can range from $85,213 - $1,40,000. This estimate is based upon 5 AT&T Big Data Engineer salary report(s) provided by employees or estimated based upon statistical methods. When factoring in bonuses and additional compensation, a Big Data Engineer at AT&T can expect to make an average total pay of $1,10,347 . See all Big Data Engineer salaries to learn how this stacks up in the market.