01 - Boil pasta according to package directions until al dente. Drain thoroughly, then rinse under cold running water to stop cooking and cool completely.
02 - Char fresh corn kernels in a skillet over medium-high heat for about 5 minutes until lightly browned, adding a smoky flavor. If using frozen corn, thaw completely and skip this step.
03 - In a large mixing bowl, add cooled pasta, charred corn, diced red onion, red bell pepper, jalapeño, and chopped cilantro. Toss gently to distribute evenly.
04 - Whisk together mayonnaise, sour cream, fresh lime juice, lime zest, chili powder, smoked paprika, ground cumin, and hot sauce if using. Season with salt and pepper to taste until smooth and creamy.
05 - Pour the prepared dressing over the pasta and vegetable mixture. Toss thoroughly to ensure all ingredients are evenly coated with the tangy, smoky sauce.
06 - Gently fold in the crumbled cotija or feta cheese, reserving a small portion for garnish on top.
07 - Transfer to a serving bowl, sprinkle with remaining cheese and extra cilantro if desired. Refrigerate for at least 20 minutes to allow flavors to meld. Serve cold.