Methodology: Job Score determined by weighting three factors equally: earning potential (average annual base salary), career opportunities rating, and number of job openings. Results represent job titles that rate highly among all three categories. Job Score based on a 5-point scale (5.0=best job, 1.0=bad job). For a job title to be considered, it must receive at least 75 salary reports and at least 75 career opportunities ratings shared by U.S.-based employees from 1/10/14–1/9/15. The number of job openings per job title represents the number of open jobs on Glassdoor over the past three months as of 1/20/15.