Cook the pasta according to the package instructions until al dente. Drain and rinse under cold water.
In a large mixing bowl, combine mayonnaise, pickle juice, dijon mustard, garlic powder, paprika, salt, and pepper. Stir until smooth.
Add diced hard-boiled eggs, chopped red onion, and pickles to the cooled pasta. Gently fold until evenly coated.
Cover and refrigerate for at least one hour before serving to allow flavors to meld.
Sprinkle additional paprika on top and garnish with sliced green onions before serving.