Senior Operating Systems / Hypervisor Engineer

Key Highlights

• WASIX itself — designing and implementing syscall semantics, process and threading models, virtual filesystems, and networking stacks on top of WebAssembly. Where Linux behavior and Wasm constraints collide, you'll be the one deciding what "correct" means.
• The Wasmer runtime — the sandboxing, scheduling, and memory-management machinery that makes thousands of Wasm "processes" run safely and fast on a single host. Think hypervisor problems, at a different layer of the stack.
• Making real software just work — porting and running battle-tested Unix software (curl, bash, PostgreSQL-class programs) unmodified on WASIX, and fixing everything that breaks along the way.
• Open source - a good chunk of your work will ship publicly, in one of Wasmers open-source repositories
• Have 5+ years of systems-level engineering experience, with real-world work on Linux internals, hypervisors (KVM, Xen, Firecracker, etc.), or comparable low-level runtimes — not just as a user, but as someone who has debugged, extended, or built them.