Although it appears to me that most employers still rely on what they read in applicants' résumés and what they are able to ellicit from applicants during interviews there are some that look for more reliable and objective, if not scientific, ways of assessing candidates. Some will discover an area of research that links personality to positive work performance attributes. Here's what one recent paper says, in part:
'Workers who are engaged in their jobs tended in dispositional terms to be emotionally stable, socially proactive, and achievement oriented.'
Although the paper warns that that these individual factors might very well interact with job characteristics it seems almost inevitable that some employers will ignore petty details like that. To be attractive to an employer pretend to be rock-solid emotionally, exhibit a normal level of extraversion and give the appearance of being ambitious (in the area of interest to the employer).
I came across mention of this line of work at What kind of personality helps you engage with work?