Whisk soy sauce, hoisin sauce, brown sugar, sriracha, and cornstarch slurry together in a small bowl. Set aside.
Heat sesame oil in a large skillet or wok over high heat. Add ground beef, minced garlic, and ginger. Cook until meat is fully browned.
Toss in the chopped cabbage and matchstick carrots. Stir-fry for 3-5 minutes until vegetables are crisp-tender.
Pour the prepared sauce over the stir-fry and toss continuously for 2 minutes until glossy and well coated.
Top with chopped green onions and sesame seeds. Serve immediately.
