Bring a medium pot of water to a boil and poach the shrimp for 2-3 minutes until pink and opaque.
Drain the shrimp and immediately submerge them in an ice bath to stop the cooking process and ensure a firm texture.
Once chilled, pat the shrimp dry and chop them into bite-sized pieces, then place them in a large glass mixing bowl.
Add the lime juice, finely diced red onion, diced cucumber, minced jalapeño, and chopped cilantro to the bowl.
In a small ramekin, whisk together the extra virgin olive oil and chili powder until well combined.
Drizzle the chili oil over the shrimp mixture and season with sea salt and black pepper.
Gently fold in the diced avocado, being careful not to mash the pieces.
Cover and refrigerate for at least 15 minutes to allow the zesty flavors to fully penetrate the shrimp before serving.