Prepare the Sauce: In a small bowl, mix soy sauce, oyster sauce, and black pepper. Set aside.
Sauté Aromatics: Heat vegetable oil in a large skillet or wok over medium-high heat. Add garlic and ginger, and stir-fry for 30 seconds until fragrant.
Cook Vegetables: Add bell pepper, snap peas, and carrot. Stir-fry for 2–3 minutes until just tender.
Add Shrimp and Sauce: Add shrimp to the pan. Pour the sauce over the ingredients and stir-fry for 3–4 minutes until shrimp are pink and cooked through.
Serve: Garnish with green onions and serve hot over rice or noodles.