.NET/C# does pretty well with SIMD for a high level language, it has portable SIMD primitives which get JITed to whatever the system supports at runtime, and they're used quite extensively throughout the stdlib so you benefit even if you're not writing SIMD routines yourself.

They tried to do something similar in Javascript but it added way too much complexity to the runtimes and ended up getting dropped in favor of WASM SIMD.