Boil water and cook soba noodles according to package directions, then drain and set aside.
Season sliced pork tenderloin with sea salt and black pepper.
Heat toasted sesame oil in a large wok or skillet over medium-high heat.
Add pork to the pan and sear until browned and cooked through, then remove and set aside.
In the same pan, add broccoli, bell peppers, and snap peas, stir-frying until tender-crisp.
Stir in the minced garlic and grated ginger, cooking for 30 seconds until fragrant.
Return the pork and noodles to the pan, pouring tamari over the mixture.
Toss everything together until well-combined and heated through.
Serve immediately topped with a sprinkle of sesame seeds.