You can grill the corn directly on the ear or cut the corn off the cobs.
Heat oil in a large pan. One with a large surface area is best.
Add the corn, chilies or jalapenos, onions, and garlic.
Cover and cook over medium low heat, covered, for a few minutes until corn is cooked and other vegetables are soft.
Shell the shrimp and toss in smoked paprika and lime juice. Grill or saute the shrimp until cooked (or warm, if they are already cooked).
Mix the mayo, lime juice, and salt.
Add the mayo mixture to the corn, mix well, and top with shrimp.
Serve topped with cotija and cilantro