Rust sounds perfect for what you want to do. It takes a bit of practice to get used to its parsing, since it's extremely safe, but when you get things running, they run very well. As for cross-platform capabilities, it has fairly mature support across all the mainstream OS platforms, and developing support for others such as ARM. Check out this page (https://forge.rust-lang.org/platform-support.html) for more information on Rust's platform support.