Bring a large pot of water to a boil and add 1 tablespoon salt. Add the green beans and cook until just tender, 4 to 5 minutes, drain. Plunge into ice water to stop the cooking process, drain.
While green beans are cooking, whisk together olive oil, red wine vinegar, Dijon mustard and maple syrup in a large bowl. Add salt and pepper to taste.
Add the green beans and orange segments, toss to combine.
Sprinkle with chopped toasted pecans just before serving.
Garnish with fresh cranberries or red grapes if desired.