Senior C Kernel Developer

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.

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• 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