Cook the soba noodles in boiling water according to package directions, then drain and set aside.
Press the extra firm tofu to remove excess moisture, then cut into small half-inch cubes.
Heat the toasted sesame oil in a large wok or non-stick skillet over medium-high heat.
Add the tofu cubes to the pan and sear until they are golden brown and crispy on all sides.
Push the tofu to one side of the pan and pour in the liquid egg whites, scrambling until fully cooked.
Toss in the sliced shiitake mushrooms, julienned carrots, chopped bok choy, and shelled edamame.
Stir-fry the vegetables for 3-4 minutes until the bok choy is wilted but still retains a satisfying crunch.
In a small bowl, whisk together the coconut aminos, rice vinegar, grated ginger, minced garlic, sea salt, and black pepper.
Add the cooked noodles to the wok and pour the sauce over the mixture, tossing everything together until well-coated and heated through.