At least it's level on all sides. Worst case is when banks slope TOWARD the house. I've dealt with them, as well as the level drainage issues.
So here's what I did on one area that was problematic. The soil was rich, black and clay. I built up the clay as high as possible along much of the outside wall, sloping it toward the yard. It worked well.
In my current house, here in Georgia, I have fought water coming down from a field into the garden area. The soil is Georgia's finest red clay. After a good storm, water saturates the top soil and stays soggy for weeks. I dug a trench along the inside of my fence and laid down two 4" perf plastic drain pipe that I'd run through a sock to keep loose dirt from clogging the holes. I filled the hole with gravel just over the pipe, and the rest of the way with top soil. It catches the water and drains it down to the creek. It's a modification of a French drain.
Try banking soil up against your house, sloping toward the yard. If still a concern, try trenching around your house and putting in a drain.
Water's always going to fight back. Persistence is the key to success.