Add the shucked corn to the hot grill pan and cook, turning occasionally, until golden brown. In my grill pan, it took about 15 minutes.
Let the corn cool completely, then cut the kernels off the cob with a knife. Set aside.
Combine the completely cooled corn kernels with mayonnaise, cotija cheese, green onions, cilantro, jalapeno, garlic, and lime juice; mix well. Season with sea salt and freshly cracked pepper, to taste.