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Floor slanted in different areas of the house

Hi, I have in the last few months noticed that flooring in my house has bent in different areas of the house. It looks like the joist is sticking out and the chip board flooring has changed shape. I need a structural engineer or similar to come have a look at my house and not only advise me on the topic but also do an overall inspection of the house structure and provide a report to me of what I am looking at. Regarding flooring, you won't be able to see that in photos but can be felt when you walk on it. Really appreciated and thanks.