Place the brown rice noodles in a large bowl and cover with very hot water; let soak for 8-10 minutes until tender but firm, then drain.
In a small jar, whisk together the tamari, fish sauce, maple syrup, lime juice, and red pepper flakes to create the pad thai sauce.
Heat the avocado oil in a large wok or non-stick skillet over medium-high heat.
Add the shrimp to the pan and sear for 2 minutes per side until pink and opaque, then remove shrimp and set aside.
In the same pan, add the minced garlic and grated ginger, sautéing for 30 seconds until fragrant.
Add the drained noodles and the prepared sauce to the pan, tossing constantly for 1-2 minutes until the noodles absorb the liquid.
Fold in the bean sprouts and sliced green onions, cooking for just 1 minute to maintain their crunch.
Return the shrimp to the pan and toss everything together to combine.
Serve immediately topped with crushed peanuts and fresh cilantro.