Chances are it's some type of fly larva...like a Lacewing, maybe dragonfly. It's not a beetle larva, due to most beetles, especially large ones, their larvae are "grubs".
At first glacé it looked like a Ladybug larva, which has the same shape and coloring, and are very active eaters of aphids. The body morphology of this larva indicates that it is a swift mover and a very likely a predator. Note the legs are long, body is flat and flexible, easy body clearance for manueverability and running.
Very likely it could be of the "bug" family. You should have taken more pics, of the mouth parts and head. Thus, indicating what it feeds on.
