Virtuozzo isn’t just another virtualization company — we’re the original architects behind Linux namespaces and cgroups.
We helped shape container technology well before it became the norm. From kernel-space to userspace, we're deep into the Linux operating system — optimizing it to scale and isolate like a boss. Now, we’re looking for a C developer to join our kernel team. You’ll help push the limits of what Linux can do in large-scale virtual environments — and have fun doing it with people who love their jobs.
What You'll Do
- Work on core Linux kernel subsystems — including memory management, scheduling, networking, and filesystems.
- Tweak and tune container isolation mechanisms until they’re
practically airtight.
- Help Linux scale harder, faster, stronger.
- Optimize resource usage across thousands of virtual machines and containers.
- Collaborate with upstream maintainers to merge your patches into the kernel.
- Representing Virtuozzo at professional conferences, such as Open Source Summit, FOSDEM, and other Linux Foundation events.
What You Bring
- Strong C programming skills — the closer to the metal, the better.
- Know your way around at least one kernel subsystem.
- Comfortable with syscalls, kernel/user-space interfaces, and how Linux works under the hood.
- Debugging experience using kprobes, ftrace, perf, gdb, or whatever else helps squash the bug.
- We are a global remote team: You can communicate your ideas clearly in English, whether it's in a code review or a conference talk.
Nice to have
- Past work on open-source projects (got a GitHub or a LKML link? We’d love to see it).
- Deep knowledge of namespaces, cgroups, or KVM.
- Python scripting for tooling, automation, or test harnesses.
- Familiarity with DevOps pipelines involving container tech or kernel builds.
Why Virtuozzo?
Because we don’t just use Linux. We shape it.
You’ll be joining a team of low-level hackers and systems engineers who are obsessed with performance, isolation, and making Linux better for everyone. We care about clean code, smart design, and upstream-first principles.
If this matches with your idea of a productive day — let’s talk.
What We Offer
- Flexible hours and remote work options
- Share Options - everyone shares in our success with share options
- We help our team get private medical insurance
- Employee recognition programs and reward systems
- Space for creativity and experimentation within the company’s goals
- Supportive, engineering-driven culture with minimal bureaucracy
- The chance to influence Core team decisions from day one
- A smart, friendly team that values reliability, simplicity, and automation
- Depending on your location and preferred employment method, other perks and benefits may apply
Skills Required
- Strong C programming skills
- Experience with at least one Linux kernel subsystem
- Familiarity with syscalls and kernel/user-space interfaces
- Debugging experience using kprobes, ftrace, perf, gdb or similar tools
- Clear written and verbal communication in English
- Past work on open-source projects (GitHub or LKML links)
- Deep knowledge of namespaces, cgroups, or KVM
- Python scripting for tooling, automation, or tests
- Familiarity with DevOps pipelines, container technologies, and kernel builds
What We Do
Virtuozzo provides hyperconverged cloud software and services for CSPs, MSPs, ISVs and enterprises. From Infrastructure-as-a-Service and Platform-as-a-Service to Anything-as-a-Service, our mission is to make cloud easy, accessible and affordable for all. Using our production-ready OpenStack cloud platform reduces cost and improves margins for cloud service providers, and reduces cost and complexity for their customers too. Virtuozzo developed the first commercially available container virtualization technology and is an active contributor to many influential open source projects and foundations, including Linux kernel, OpenVZ, Docker, Kubernetes, CRIU™, KVM, libvirt, QEMU, OpenStack, CNCF and OCI.
