Step 1 Preheat oven to 220°C. Line a baking tray with baking paper. Place salmon on prepared tray; roast for 10–12 minutes, or until cooked to your liking. Set aside to cool, then flake into pieces.
Step 2 Meanwhile, cook soba noodles according to packet instructions, or until al dente, adding snow peas for the last 30 seconds. Refresh noodles and snow peas under cold running water; drain well and transfer to a large bowl.
Step 3 Make coriander dressing: put all ingredients in a small bowl and stir well until sugar dissolves.
Step 4 Add salmon, carrot, cucumber, baby spinach, half of the shallot and all of the coriander dressing to noodle bowl; toss to combine.
Step 5 Divide salmon salad among serving bowls or plates, garnish with remaining shallots and serve.