Kernel Developer

2 weeks ago

Prague, Hlavní město Praha, Czech Republic Cloudlinux Full time 80,000 - 120,000 per year

We are seeking experienced Kernel Developers to join our talented team at KernelCare. If you are passionate about Linux and enjoy the challenge of developing Linux Kernels and patches, then this is the perfect opportunity for you. As a Kernel Developer, you will utilize your strong C development skills and passion for Linux to create patches with a strong focus on cybersecurity. This role offers a rewarding and stimulating career where you can find solutions for our valued customers.

At KernelCare, our product provides live kernel patching services that deliver security patches and bug fixes for a variety of popular Linux kernels, all without the need for system reboots. We are proud to be a part of CloudLinux Inc., the provider of the #1 OS in security and stability for hosting providers.

For more information about our KernelCare Product, please visit our website:

As a Kernel Developer, you will have several key responsibilities:

  • Ensure the timely update of existing kernels with security fixes and CVEs patches
  • Provide support for existing functionality and implement new features
  • Optionally assist with automation by creating Python and Bash scripts (e.g., for testing CVE patches), while the main responsibility for automation lies with a dedicated team

To be successful in this role, you should have:

  • Strong proficiency in C programming and exceptional debugging skills
  • Experience with Linux kernel core subsystems
  • Extensive experience with GDB and other debuggers
  • Basic understanding of x86-64 ABI 
  • Proficiency in Git for development, patch management, and branch management
  • Exceptional problem-solving and strategic thinking skills
  • Strong planning, time management, decision-making, presentation, and organizational abilities
  • Excellent interpersonal abilities and strong team player skills
  • Ability to thrive in an agile, fast-paced environment
  • English - upper-intermediate or higher - to ensure clear communication of progress within the team

Nice to have:

  • Expertise in CPU performance and power analysis
  • In-depth knowledge of CPU and cache architectures
  • Basic understanding of x86-64 Assembly (AT&T asm)
  • Experience with Python and shell scripting
  • Prior exposure to Jenkins

What's in it for you?

  • A focus on professional development.
  • Interesting and challenging projects.
  • Fully remote work with flexible working hours, that allows you to schedule your day and work from any location worldwide.
  • Paid 24 days of vacation per year, 10 days of national holidays, and unlimited sick leaves.
  • Compensation for private medical insurance.
  • Co-working and gym/sports reimbursement.
  • Budget for education.
  • The opportunity to receive a reward for the most innovative idea that the company can patent.

By applying for this position, you consent to the processing of your personal data as described in our Privacy Policy ), which provides detailed information on how we maintain and handle your data.

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