Minecraft Plugin

Looking for somebody to develop a Plugin for a Minecraft server. It's a fairly simple plugin consisting of players earning money from killing animals, each other. I had a fairly inexperienced developer create one for me already, but it's very chunky and not efficient at all. Need a experienced developer that is confident in their work and confident that they can provide a efficient, well oiled plugin. Probably worth $15-$30, but really looking for top quality. Details: Server runs Spigot, or Bukkit if you will. Must be compatible with Vault I can provide more details through question.