You should always write a thank you note after a hiring manager takes her precious time to step down from the clouds above to allow you to beg her for a job.
Look, I hate this. Just what are you exactly thanking the manager for? Taking the time to talk with you and consider your application for the job, right? But, what were you really doing? You were taking your time out of your day (and often using vacation time from your current job to do so) to try and solve a problem for the hiring manager.
See, just as much as you need a job, a hiring manager needs someone to fill that job. It’s not a situation where the hiring manager gets to feel all warm and fuzzy about being so gracious and kind as to actually hire someone. You won’t be hired unless you bring (or rather, you are expected to bring) value to the company.
To keep reading, click here: Dear Hiring Manager, Perhaps You Should Write the Thank You Note