Combine sauce ingredients in a small measuring cup and whisk together.
Heat peanut oil in wok over medium high heat. Add onion, garlic, ginger, carrot and celery. Drizzle in a tablespoon or two of sauce and saute 1-2 minutes until fragrant and slightly softened.
Add steak to wok; add another couple tablespoons of sauce and toss together, lightly browning meat, approx 5 minutes.
Add rice and remaining sauce and mix thoroughly.
Add eggs and peas, mix thoroughly and toss until heated through.
Sprinkle with chopped scallions and serve.