Cook soba noodles according to package directions.
Meanwhile, heat the sesame oil in a large skillet. Add ginger and garlic and saute 1 minute. Add beef, scallions, snap peas and carrots and saute 1 minute. Add broth and soy sauce and bring to a simmer and cook 5 minutes, until carrots are soft. Drain noodles and add to sauce. Toss together with cilantro.