Preheat the oven to 400 degrees F (200 degrees C), and line a large baking sheet with parchment paper.
Whisk olive oil, maple syrup, sriracha, and soy sauce together in a large bowl until thoroughly combined. Add florets and toss until well coated in the sauce.
Transfer cauliflower florets to the baking sheet in a single layer; set bowl with any remaining sauce aside.
Roast in the preheated oven until just fork tender, stirring once halfway through, 25 to 35 minutes.
Add roasted cauliflower back to the reserved maple-sriracha sauce in the bowl, toss well, and serve with optional lime wedges.