https://www.roleplay.co.uk/forms/17-fivem-development-team-application/ Not easy making a custom fiveM server happen quickly with all the features that have to be coded, textured and tested, if you have the right skills in Lua ,C# or Java Script im sure ppl could give quite a boost in developing it.
Its a non starter currently, the one dev we have on the GTA project is busy IRL and no one else has applied!