Place the brown rice noodles in a bowl of hot water and soak for 10-15 minutes until tender but firm, then drain.
In a small jar, whisk together the tamari, fresh lime juice, and red chili flakes to create the sauce.
Heat the toasted sesame oil in a large skillet or wok over medium-high heat.
Add the minced garlic and grated ginger, sautéing for 30 seconds until fragrant.
Add the shrimp to the skillet and cook for 2-3 minutes until pink and opaque.
Push the shrimp to one side of the pan, crack the egg into the empty space, and scramble until just set.
Add the drained noodles and the prepared sauce to the skillet, tossing everything together for 1-2 minutes.
Fold in the mung bean sprouts and green onions, cooking for another 30 seconds until the sprouts are slightly softened.
Remove from heat and garnish with fresh cilantro before serving.