In a small glass bowl, whisk together the white miso paste, grated fresh ginger, rice vinegar, toasted sesame oil, honey, and water until the dressing is completely smooth.
Pat the shrimp dry with paper towels and season both sides with sea salt and black pepper.
Heat the avocado oil in a large skillet over medium-high heat until shimmering.
Add the shrimp to the skillet and sear for 2 to 3 minutes per side until they are opaque, pink, and slightly curled.
In a large serving bowl, combine the mixed baby greens, shelled edamame, and sliced cucumber.
Place the warm sautéed shrimp on top of the salad base.
Drizzle the prepared white miso ginger dressing over the entire dish and toss gently before serving immediately.