Bring a pot of water to a boil and cook the soba noodles according to package directions, then drain and rinse with cold water to prevent sticking.
In a small mixing bowl, whisk together the tamari, gochujang, grated ginger, minced garlic, rice vinegar, and toasted sesame oil to create the spicy sauce.
Heat the avocado oil in a large skillet or wok over medium-high heat.
Add the shrimp to the skillet and sauté for 2-3 minutes per side until they turn pink and opaque, then remove them from the pan and set aside.
Add the broccoli, sliced red bell pepper, and snap peas to the same skillet, sautéing for 4-5 minutes until the vegetables are tender-crisp.
Return the cooked shrimp and the drained noodles to the skillet, pouring the spicy sauce over the mixture.
Toss everything together for 1-2 minutes until the noodles are well-coated and the entire dish is heated through.
Divide into a bowl and garnish with sesame seeds and thinly sliced green onions before serving.