Preheat the grill to medium high. Shuck the corn and place it directly on the grill when hot. Cook corn 3 - 4 minutes per side until nice and charred. Remove and let rest until cool enough to touch.
Once cooled, cut the corn from the cob. Add it to a large salad bowl, along with quinoa, tomatoes and jalapeno.
Toast the pumpkin seeds in a dry skillet (or toaster oven) until golden brown, about 1 - 2 minutes. Add the pumpkin seeds to the bowl and toss everything to combine.
Add dressing ingredients to a sealed jar (a mason jar works great) and shake until combined. 3 - 4 tablespoons of dressing over salad and toss again. Taste and add more dressing if desired.
Stir in cilantro and serve.
Salad can also be chilled for 1 - 2 hours before serving, but I liked it slightly warm.