01 - Combine thinly sliced beef with 1 tablespoon soy sauce, cornstarch, and sesame oil in a bowl. Toss to coat evenly and let marinate for 10 minutes.
02 - Cook the noodles following package instructions. Drain thoroughly, rinse under cold water, and set aside.
03 - In a small bowl, whisk together soy sauce, oyster sauce, sriracha, brown sugar, and water until well combined.
04 - Heat 1 tablespoon vegetable oil in a large wok or skillet over high heat. Stir-fry the marinated beef for 2 to 3 minutes until just cooked through. Transfer to a plate and set aside.
05 - Add the remaining 1 tablespoon vegetable oil to the wok. Stir-fry garlic, ginger, red bell pepper, carrot, and sugar snap peas for 3 to 4 minutes until tender-crisp.
06 - Return the cooked beef to the wok. Add the drained noodles and prepared sauce. Toss everything together over high heat for 2 to 3 minutes until heated evenly and coated with sauce.
07 - Remove from heat and garnish with sliced spring onions, chopped cilantro, toasted sesame seeds, and lime wedges as desired. Serve immediately.