In a medium-sized mixing bowl, combine the shrimp, finely diced celery, and red onion. Stir gently to mix.
In a separate small mixing bowl, whisk together the mayonnaise, grated garlic, lemon juice, lemon zest, minced dill, minced parsley, Dijon mustard, kosher salt, and black pepper.
Pour the whisked mayonnaise mixture over the shrimp mixture. Stir well to coat all ingredients.
Cover the bowl and refrigerate for at least 1 hour to allow flavors to meld.
Serve the shrimp salad cold and store leftovers in an airtight container in the refrigerator for 3-4 days.
Notes
Use pre-cooked shrimp for quicker preparation.
Fresh herbs enhance flavor, and you can substitute Greek yogurt for mayonnaise for a lighter version.