Mix cucumber, red onions, sazón,, and juice of 3 lemons in a large bowl.
Add red peppers, tajin tostadas sriracha (optional), scallions or green onions, and avocado cilantro; mix until everything is evenly blended.
Stir up sofrito, lime juice, and adobo seasoning in a different bowl.
Introduce the shrimp into the large bowl of vegetables; pour in the sofrito mixture and blend everything together.
Cover the bowl with plastic wrap and refrigerate for at least 3 hours.
Serve with other condiments as desired.