Place sliced cucumbers in a colander, toss with salt, and let stand for 10 minutes to drain excess moisture.
Pat cucumbers dry with paper towels to remove remaining surface liquid.
In a small mixing bowl, whisk together rice vinegar, soy sauce, toasted sesame oil, sugar, grated ginger, and minced garlic until the sugar is fully dissolved.
Transfer the cucumbers to a large serving bowl and pour the dressing over them.
Toss the cucumbers thoroughly to ensure even coating.
Garnish with toasted sesame seeds and sliced scallions.
Serve immediately or refrigerate for up to 30 minutes for enhanced flavor development.