Soak the rice noodles in hot water for 10 minutes until softened, then drain and set aside.
In a small bowl, whisk together the tamari, fish sauce, and lime juice to create the sauce.
Heat the sesame oil in a large skillet over medium-high heat and sauté the minced garlic and red pepper flakes for 30 seconds until fragrant.
Add the shrimp to the skillet and cook for 2-3 minutes until pink and opaque, then remove the shrimp and set them aside.
Push any remaining bits to the side of the pan, crack the egg into the skillet, and scramble until just set.
Add the softened noodles, shredded carrots, and bean sprouts to the skillet, then pour the sauce over the mixture.
Stir-fry everything for 2 minutes until the noodles are well-coated and the vegetables are slightly tender.
Return the shrimp to the pan, toss to combine, and garnish with sliced green onions and crushed peanuts before serving.