In a medium bowl, combine your drained crab meat, egg, breadcrumbs, mayonnaise, sliced green onions, Dijon mustard, soy sauce, and hot sauce. Use a fork or your hands to gently mix everything together until just combined. This should take about one minute.
Here's the important part: don't overmix. You want to see little pieces of crab meat visible in the mixture. If you mash it too much, your crab cakes will be dense and paste-like instead of tender and chunky. Gentle is the way to go.