In a large pot, cook pasta according to package directions. Reserve 1 cup pasta water, drain and set aside.
In a large skillet, heat the oil over medium heat. Add the cherry tomatoes and cook for 2 minutes, add the pesto sauce, shrimp, and ¼ cup pasta water. Cook for another 2 to 3 minutes, stirring often, or until the shrimp turn pink and are cooked through.
Add the cooked pasta to the shrimp mixture and toss to combine with sauce. Top with Parmesan cheese.