Preheat oven (electric cooker: 125 °C/circulating air: 100 °C/gas: see manufacturer). Rub the meat with 1 tablespoon of olive oil and season all around with salt and pepper. Heat a grill pan and roast the meat in it for about 2 minutes on each side.
Then cook in the hot oven on the second rack from below for 8-10 minutes. Then leave to rest for 5 minutes.
In the meantime, wash the tomatoes. Heat the remaining oil in a pan and sauté the tomatoes in it. Deglaze with vinegar and soy sauce. Season with pepper and cook over medium heat for 3-4 minutes.
Cut the meat into thin slices. Serve with tomatoes and sauce. Ciabatta tastes good with it.