It depends. Generally when I'm hiring you, I want you to stay at least for few years. If you've been in several companies for few months, it's a warning sight. On the other hand, when I look at your resume, I want to see your career path. If you were recruited by a bigger company, it's good sign, no matter how short was your stay at the former employer. But quitting for similar company, or quitting more then 2-3 short jobs is a warnign sign.

It also depends on your previous record - are those your first jobs, or you've been several years in a company and then made some bad career moves. If this is your first job and you left it for more reputed company after less then a year, it's actually a good career move.

It depends. Generally when I'm hiring you, I want you to stay at least for few years. If you've been in several companies for few months, it's a warning sign. On the other hand, when I look at your resume, I want to see your career path. If you were recruited by a bigger company, it's good sign, no matter how short was your stay at the former employer. But quitting for similar company, or quitting more then 2-3 short jobs is a warnign sign.

It also depends on your previous record - are those your first jobs, or you've been several years in a company and then made some bad career moves. If this is your first job and you left it for more reputed company after less then a year, it's actually a good career move.