Cook the soba noodles in a large pot of salted water until al dente, about 3-4 minutes. Drain well. If serving the noodles cold then rinse them well with cold water at this point, otherwise return them to the pot and toss with a drizzle of sesame oil to prevent sticking.
In a large bowl whisk together the peanut butter and tahini with the Coco Aminos (or Tamari sauce), apple cider vinegar, lime juice, sesame oil, water, sesame seeds, chili pepper, garlic and grated ginger. Once the sauce is smooth and creamy just stir in the scallions and sesame seeds. Taste and adjust seasonings with a pinch of salt and more vinegar if needed. (note: you can also make the sauce in a blender)
Add the cooked soba noodles to the bowl with the peanut sauce and gently toss to coat well. Add more water If needed to stretch it out.
Serve cold garnished with the cilantro, sesame seeds and more chili pepper to taste.