Been on Roblox since 2013. Started scripting in 2019 by reading the docs and picking apart how the engine works, no courses, just trial and error.
In 2020 I got into anti-cheat research, wrote private exploits and bypasses that held up better than most public tools at the time. It gave me a solid understanding of how games break and how to stop that.
Now I build full games with security built in from the start, not bolted on later. I also do backend and frontend work outside of Roblox when I need a change of pace.