A 'professional' is someone who get paid a lot of money for things he/she did.
To be a 'professional' in the EE field is not difficult, just apply for a full/senior/fellow membership of some international recognised institutions like IEE in the UK and IEEE in the States as a start.
Of course people who are not themselves 'professional' would discredit those who do but hey at the end of the day its the money that matters.
Not a 'lot' any amount of payment for services rendered makes you 'professional' - consider those young ladies on street corners with short skirts, they aren't called 'pros' for nothing :lol: (not that they don't make a lot of money!).
To be a 'professional' in the EE field is not difficult, just apply for a full/senior/fellow membership of some international recognised institutions like IEE in the UK and IEEE in the States as a start.