Since you'll be grilling the shrimp, soak wooden skewers in water for 1/2 to 1 hour. While skewers are soaking, prepare dressing by combining all ingredients into a medium size jar and shake to combine. Pour half the dressing into a gallon size plastic bag and add shrimp. Let shrimp marinate for 30 minutes. Skewer and cook shrimp on grill (I use my indoor grill pan) about 2-3 minutes per side. Set cooked shrimp aside and assemble the salad.
Cook linguini according to package directions, drain and rinse with cold water to stop the cooking. While pasta is cooking, chop the cilantro, scallions and celery. Microwave the sugar snaps for 1-1/2 minutes and the sliced red peppers for 45 seconds.
Combine pasta, cooled sugar snaps and red pepper, scallions, celery and cilantro and toss with remaining dressing.
Plate and garnish with cilantro and toasted sesame seeds (optional). Serve the shrimp on skewers as I do, but the dish is equally impressive when the shrimp is mixed in with the pasta salad. Serve at room temp or cold.