We are hiring systems engineers in San Francisco to help make Bun more reliable and implement new runtime APIs and services. Bun is written in a mix of Zig and C++, but experience with Zig is not required. Working on Bun often involves reading WebKit/JavaScriptCore source code, Zig standard library source code, Darwin XNU source code, and sometimes Linux kernel source code. We are a well-funded early-stage startup (9 people currently).