Cook the fusilli pasta in a large pot of salted boiling water according to package directions. Drain and rinse under cold water to cool.
In a large skillet over medium heat, add the corn kernels. Sauté for about 5-7 minutes, stirring occasionally until slightly charred and tender. Remove from heat and let cool.
In a large mixing bowl, combine the cooled pasta, sautéed corn, diced red bell pepper, finely chopped red onion, and minced jalapeño.
In a small bowl, whisk together the mayonnaise, lime juice, chili powder, salt, and pepper. Pour this dressing over the pasta salad mixture and toss gently to combine.
Fold in the crumbled cotija cheese and chopped cilantro, mixing until evenly distributed.
Adjust seasoning with more salt and pepper if needed. Chill in the refrigerator for at least 30 minutes before serving to allow flavors to meld.
Notes
Serve in a large bowl garnished with additional cilantro and a sprinkle of chili powder on top for a pop of color.