Cut the shrimp into 1/2 inch pieces and transfer to a bowl. Set aside.
In a small bowl, whisk together the lemon and lime juice to combine. Pour 1/2 cup of the citrus juice over the shrimp and toss to combine. Allow the shrimp to marinade in the juice.
The Other Stuff
Finely chop the tomato, onion, jalapeño and cilantro. Fold in the other ingredients with the citrus and shrimp.