Cut the sushi-grade salmon into bite-sized cubes and place in a mixing bowl.
Add soy sauce, rice vinegar, sesame oil, sriracha, grated ginger, white onion, and green onion to the bowl with the salmon. Mix well.
Cover and refrigerate the salmon for about 30 minutes to let the flavors develop.
In a serving bowl, add a base of steamed rice. Top with the marinated salmon, edamame, avocado slices, and a sprinkle of sesame seeds.
Enjoy this fresh, flavorful, and protein-packed poke bowl!