Heat the olive oil over medium heat. Add the garlic and shrimp and sauté until the shrimp is just cooked through, then remove from heat.
Whisk or shake the lime juice, rice vinegar, fish sauce, sesame oil, and brown sugar until the sugar is completely dissolved.
Layer the rice noodles, shrimp, red cabbage, carrots, and cucumber on plates.
Sprinkle with peppers, green onion, and cilantro.
Drizzle with dressing and serve immediately.