I would think that a very large majority of people on this forum have experience with an engineering firm.
How hard it is to get hired at one depends on where you are, what you do, the firm, what you want, etc.
No, a master's is not necesarily required to be competitive. Again, it depends on where you are, what you do, the firm, what you want, etc.
If you can narrow your question more, the answers wil be more specific.
"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?