Bring a pot of water to a boil and cook the soba noodles according to package directions, then drain and set aside.
In a large skillet over medium-high heat, brown the ground beef until fully cooked, using a spatula to break it into small crumbles.
Season the beef with the sea salt and black pepper, then remove the beef from the pan and set aside on a plate.
In the same skillet, add the toasted sesame oil, broccoli florets, and sliced carrots, sautéing for 3-4 minutes until the vegetables are vibrant and slightly softened.
Stir in the minced garlic and grated fresh ginger, cooking for about 1 minute until the mixture becomes highly fragrant.
Return the cooked beef and the drained soba noodles to the skillet, drizzling the tamari over the top.
Toss all ingredients together for 1-2 minutes until everything is well combined and heated through.
Remove from heat and garnish with thinly sliced green onions before serving immediately.