I can’t imagine most Nvidia employees don’t make enough to become millionaires within like 5-10 years if they aren’t already. Their entry-level software engineering positions have a base pay of $147K and total compensation of $180K. The lowest paying level of senior engineers gets more like $300K… Even the ones who leave before then are highly likely to get a job with comparable pay or benefits considering they have Nvidia on their resumé.
Now, tens-of-millions-aires, I don’t think most employees get there.
JS or really anything you’d make a web app in (I use Rust with something like Dioxus/Yew/Leptos/Tauri), C#/.NET (I use F# because OO-style languages are ugly and a hot mess, especially C# and Java), Java/JVM (I use Scala whenever I can and Kotlin otherwise), C++ with GTK or Qt. There are a lot of options but obviously anything that’s not C++ or web is gonna give you a lackluster experience (though I have a thing against web apps and will go through a lot of hoops to have my application use a native interface)