Place the dry brown rice noodles in a bowl of very hot water and soak for 10-15 minutes until softened but still firm, then drain.
In a small mixing bowl, whisk together the tamarind paste, fish sauce, and coconut aminos to create the stir-fry sauce.
Heat the avocado oil in a large wok or skillet over medium-high heat.
Add the minced garlic and grated ginger to the pan, sautéing for 30 seconds until fragrant.
Add the shrimp to the wok and cook for 2-3 minutes until they turn pink and opaque, then push them to the side of the pan.
Crack the egg into the empty space of the pan and scramble quickly until just set.
Add the drained noodles and the prepared sauce to the wok, tossing everything together for 2 minutes to coat the noodles evenly.
Fold in the bean sprouts and sliced green onions, cooking for just one more minute until the sprouts are slightly wilted.
Transfer to a plate and garnish with crushed peanuts and a fresh lime wedge before serving.