FrontendBackendHigh signalEmergingAround since 2017
WebAssembly
Also written as Wasm
A low-level format that lets code written in languages like C++, Rust, or Go run in the browser at near-native speed, used for performance-critical tasks JavaScript handles poorly (video editing, games, simulations).
Think of it like
Like installing an industrial power tool into a workshop that normally only has hand tools, for the one job too heavy-duty for hand tools to handle.
Junior or senior?
Junior sounds like
Mentions WebAssembly as something they're curious about.
Senior sounds like
Describes the actual performance problem that forced them to reach for it instead of optimizing JavaScript.
Ask them
“What specific performance problem led your team to reach for WebAssembly instead of optimizing JavaScript?”