Descripción de la vacante
Wasmer
Spain, Valencia
Senior Operating Systems / Hypervisor Engineer en Valencia, España is listed on Jobeax. Browse 80,000+ vacancies available.
Company: Wasmer (
Type: Full-time
Location: Remote (CET ± 2)
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Build an operating system that runs everywhere
Most engineers spend their careers using operating systems. A few get to build one. This role is for the second group.
At Wasmer, we're building WASIX — an OS emulation layer that brings full POSIX semantics to WebAssembly: threads, processes, fork(), sockets, TTYs, signals, the works. It's the kind of problem where you're reading Linux kernel source in one tab and the WebAssembly spec in another, deciding how mmap should behave on a platform that was never designed to have one.
If that sentence made you lean in rather than close the tab, keep reading.
What you'll work on
You're probably a fit if you
Bonus points (nice, not required):
Benefits
Why this role is different
Greenfield OS work is rare. Greenfield OS work with real users is rarer. WASIX already runs real software for real developers — which means your design decisions get stress-tested immediately, not in five years.
You'll join a small, senior, remote team where the interesting problems aren't handed down from an architecture committee — you'll find them, scope them, and solve them. And because we're open source at our core, the work you do here is yours to point at for the rest of your career.
About Wasmer
Wasmer builds the software powering the next generation of computing platforms — local, cloud, and edge — on WebAssembly. Just as https://jobeax.com/link/JSd7UYCSg572jJDY unlocked server-side JavaScript, we're unlocking server-side WebAssembly for every language: C/C++, Rust, Go, Python, and beyond.
Our mission is to make software universally available. We're an open-source-first company, and we believe the best infrastructure is built in public.
How to apply
Send us your CV or LinkedIn — but honestly, we care more about your GitHub, a project you're proud of, or a war story about the gnarliest low-level bug you've ever fixed. Tell us what you'd want to build in WASIX first.
Wasmer is a remote-first company. We welcome applicants of all backgrounds — what matters here is what you build.
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