Cook the soba noodles according to package directions, drain, and set aside.
Press the tofu with a clean towel to remove excess moisture and cut into 1-inch cubes.
In a small bowl, whisk together the tamari, grated ginger, minced garlic, rice vinegar, and red pepper flakes.
Heat the toasted sesame oil in a large non-stick skillet or wok over medium-high heat.
Add the tofu cubes to the skillet and sear until golden brown and crispy on all sides, approximately 8 minutes.
Add the broccoli florets and shelled edamame to the pan, adding a tablespoon of water to help steam the broccoli until it is tender-crisp.
Add the cooked soba noodles and the prepared sauce to the skillet, tossing everything together for 1-2 minutes until well-coated and heated through.
Plate the stir-fry and garnish with toasted sesame seeds before serving.