Hey, I've been coding for about 3 years and i have a big experience in java and bukkit/spigot coding. I think i would be a perfect solution for you since i've been making this kind of gamemodes for these 3 years. In the past i've made (kitmap (something like kitpvp), uhc, uhcmeetup, hcf, skywars, bedwars, skypvp, and a lot more...). If interested contact me here or on discord. My discord id is: VISUAL_#4890