In a medium bowl, combine soy sauce, rice vinegar, ginger, garlic, and red chili flakes.

Heat a large skillet over medium-high heat until hot. Toss steak in oil and add to skillet. Sear 3 minutes per side, then let rest on a cutting board.

Add carrots, green beans, and sauce to the skillet and stir until combined. Let simmer until tender, 5 minutes, then add beef and ramen noodles. Serve.