Whisk soy sauce, vinegar, maple syrup, garlic, ginger, cornstarch, and water in a bowl.
Heat oil in a wok over medium-high heat.
Add vegan shrimp and stir-fry for 2–3 minutes until lightly golden.
Remove shrimp and set aside.
Add broccoli, bell pepper, carrot, and green beans to the wok.
Stir-fry vegetables for 4–5 minutes until crisp-tender.
Return shrimp to the pan and pour sauce over everything.
Toss well and cook 1–2 minutes until sauce thickens.
Finish with sesame oil and spring onions.