Bring a large pot of salted water to a rolling boil. Add the pasta and cook as per the package instructions until al dente, usually about 8-10 minutes. Once cooked, drain and rinse under cold water to stop the cooking process.
In a large mixing bowl, combine the cooked and cooled noodles, finely diced celery, red bell pepper, red onion, and thawed shrimp.
In a separate small bowl, whisk together the mayonnaise, fresh lemon juice and zest, chopped dill, and season with salt and pepper to taste.
Pour the dressing over the pasta mixture and gently toss until everything is well coated. Cover and refrigerate the salad for at least 1 hour to allow the flavors to meld.