First, prepare an ice bath to shock the soba noodles and edamame once they're cooked.
To do this, place cold water in a large bowl, fill with ice then set aside.
Next, prepare the noodles and edamame by bringing a large stockpot of water to boil (do not salt the water).
Once boiling, add in the uncooked soba noodles and set a timer for 4 minutes.
After 3 minutes of cooking, add the shelled edamame to the soba noodles and boiling water.
At the 4 minute mark, strain the soba noodles and edamame then immediately place the strainer into the prepared ice bath to stop the cooking. Let sit 2-3 minutes then remove and strain completely. Set aside.
To prepare the dressing mix together the tamari, rice wine vinegar, sesame seed oil, lime juice, ginger, garlic, and salt.
Place the soba noodles and edamame in a large bowl then add in the cucumber noodles.
Pour the dressing over the noodles and using tongs, toss to incorporate. Stir in the scallions.
Chill for at least 1-2 hours before serving.
To serve, place a portion of the noodle salad in a bowl, top with a few slices of avocado and 5-6 poached shrimp. Sprinkle with red pepper flakes, sesame seeds, and a small splash of rice wine vinegar, if desired.