Heat a large skillet over medium high heat and add the oil.
In a medium bowl combine the sesame oil, soy sauce, brown sugar, garlic, ginger, Sriracha, water and cornstarch with a whisk until smooth.
Place the salmon fillets top side down in the pan and brown for 2 minutes.
Flip the salmon and brown the other side for 2 more minutes.
Pour the sauce in and nestle the salmon filets into the sauce.
Reduce the heat to medium low and let the salmon cook in the sauce for about 10 minutes, or until the internal temperature of the salmon reaches 63 degrees Celsius (145 Fahrenheit).
Serve over rice with sliced green onions and sesame seeds if desired.