Whisk together the gochujang, soy sauce, maple syrup, sesame oil, ginger, garlic, and rice vinegar in a small bowl until smooth.
Pat the salmon fillets dry with the paper towels.
Brush a thin layer of the glaze over the top and sides of each fillet, reserving the remaining glaze.
Preheat the air fryer to 400F.
Place the salmon fillets skin-side down in the air fryer basket, leaving space between them.
Air fry for 7-9 minutes until the salmon flakes easily and reaches 130-135F internal temperature.
Remove the salmon from the air fryer.
Drizzle with the reserved glaze.
Top with the sesame seeds and scallions.
Serve immediately with steamed rice.