In a mixing bowl, combine the low sodium soy sauce, water, sesame oil, minced garlic, grated ginger, sriracha, and cornstarch. Whisk until well combined.
Add the thinly sliced strip steak to the marinade and let it marinate for at least 15-30 minutes, or up to overnight.
Preheat your air fryer to 400°F (200°C).
Toss the broccoli florets with olive oil in a separate bowl.
Add the marinated beef to the air fryer basket in a single layer. Cook for 8-10 minutes, shaking halfway through.
Add the broccoli to the air fryer basket with the beef and cook for an additional 5-7 minutes.
Serve warm over rice or noodles, drizzling any leftover sauce over the top.