Whisk all sauce ingredients together in a small bowl. Set aside ¾ of the mixture.
Place salmon fillets in a baking dish and brush with half of the ¼ mixture, coating all sides. Sprinkle with sea salt.
Bake salmon for 25 minutes.
While salmon cooks, make the noodles. Bring water in a medium saucepan to a boil.
Add soba noodles and bring water back to a boil. Turn down the heat and simmer for about 8 minutes, until noodles are soft.
Drain noodles and transfer to a bowl of cool water. Use your hands to rinse any remaining starch from the noodles. Drain again.
Add the remaining ¾ of sauce to the noodles along with the orange zest and grated carrots. Set aside.
Bring another medium saucepan full of water to a boil. Add broccolini to the water and cook for 2-3 minutes. Drain broccolini in a colander and transfer to a bowl full of ice cold water.
Heat sesame oil in a saute pan. Add broccolini, coconut aminos, garlic powder and salt. Saute for 2-3 minutes. Add noodles to the pan and toss to warm.
After salmon has cooked for 25 minutes, turn the oven to broil and cook an additional 3-5 minutes, until top has browned.
Divide noodles and broccolini between two bowls and top with salmon fillets.
Garnish with sesame seeds and orange slices.
Recipe by Whitney E. RD at https://www.whitneyerd.com/2017/01/orange-ginger-salmon-soba-noodles.html