Bring water to a rolling boil in a large pot; add ramen, gently mix to separate + cook about 2 min until tender; reserve ¼ cup of the boiling water + strain noodles; add back to pot

In a small bowl, mix 4 tbsp of Thai peanut sauce with the reserved water + mix into noodles

Heat 1 tbsp oil in skillet over med-high; pat shrimp dry + sauté with salt/pep 2-3 min until shrimp is pink, opaque + cooked through; mix into noodles; wash scallions, thinly slice crosswise + discard roots; divide all to plates + garnish noodles with scallions