Thanks so much for the information Canuck78. It is actually not a calculated risk type of story that I wrote down. This is the life-story of mine (or as many call it: background history of me in the past years). What I am trying to look for and find out before getting in touch with the embassy if there is a chance (if there's any at all) to keep the PR status, or if an immediate loss of PR status is the outcome as soon as I am interviewed by the embassy or there's a slight chance to keep it. Every life-story is different and every case is different. Of course there are general similarities and regulations to be followed but still every case is different.
A former embassy employee said to a good friend of mine last night (they were a couple for several years and I asked her if she could just try to get an advice in general), so she asked his advice on this. My background since outside of Canada and the purpose of returning to Canada with a job offer at this highly educated position with the length of contract, I am "most likely will be accepted rather than be refused" on keeping the PR this case. He pointed out, once (if) succeeding on setting up a personal interview with the embassy and if I tell my true story, and as long as not trying to trick immigration officers and having a strong base potential with the job offer (for Canadian economy obviously), at the end of the interview they also will turn out to be "people" not "robots" and will likely be accepted as an end-result. Voluntarily giving up my PR is also an option if that's what I would like but it's the opposite that I'd like. Voluntarily giving up only if I never ever want to return back as a PR.
I still don't know because at this page's forums I keep reading that it is nearly equal to impossible to keep a PR status even if someone gets a very good job offer from Canada. On the other hand, eg. as this former embassy person says to be on the safe side I should really get this straight and discuss it with immigration before even considering voluntarily giving up my PR and then try to go back to Canada with a regular work permit.
So I am really unsure.... very-very unsure now on what the best is to do ....
Yeah, that won't work. You have two options (and ONLY these two options)
1. Apply for a PRTD
2. Try to cross via the US-Canada land border
1. You can try applying for a PRTD but the chances are extremely high (I'd go so far as to say almost 100%) that your application will be rejected and that will be that. There's no process to set up a "personal interview" or talk to immigration before you apply or anything like that. I'm excluding special cases like if you know the Canadian ambassador personally or something like that - then you don't need our help.
Note - You DO have the right to appeal this decision, but it's difficult to do so from outside Canada. You would need to engage a Canadian law firm and things are generally harder when you're sitting in your home country and the appeal process is happening in Canada.
2. Crossing via the land border is the best option for you.
Again, two possibilities
2.1 - You are very lucky and no one questions your RO, and you simply get through. This is rather unlikely, but there's a non-zero chance (and I would say that it's far more likely than expecting to get a PRTD).
If you get through, and then all you need to do is live in Canada for two whole years (you cannot leave for even a day - so keep that in mind). After two years, you'll be back in compliance and all will be well. Can't speak to getting documents and all that, but it's in no way illegal to be in Canada if you're a PR and you were allowed through by CBSA.
Just don't try renewing your PR card and don't travel outside the country. While in Canada you are NOT an undocumented immigrant that needs to worry about getting reported to IRCC/CBSA. You have the right to work, the right to healthcare, etc. You don't have to avoid the police or government authorities and so on.
2.2 - You aren't so lucky and the CBSA officer begins the process of revoking your PR. This is the more likely outcome, but as people have mentioned, you will be allowed to enter Canada regardless. You can appeal the decision, and it's much easier to do so from within Canada. Till such time as a final decision is made, you remain a PR, and therefore you have the right to work, healthcare etc.
However, you do not get to count the days you're staying in Canada towards RO during this process. So if the appeals process takes a year, you will not be able to use that year towards your RO. The day counter will start after you have successfully won your appeal.
Given that you will be able to work, and you have a job offer (presumably a good one), it makes more sense to try and come via the land border. The appeals process takes into account many factors and it will count in your favor that you are highly skilled and have a good job in Canada. It is during the appeal process that you can give your "life story" and the circumstances, and it might work.
Again, no one can predict the outcome of the appeal (you may just as easily be told to leave), but it's much better than trying for a PRTD.