C Developer at CloudLinux

About CloudLinux and ELS

CloudLinux is a global, remote-first company delivering high-volume, low-cost Linux infrastructure and security products that help organisations increase operational efficiency. Endless Lifecycle Support (ELS) enables organisations to securely continue using Linux distributions and software versions that have reached end of life by providing vulnerability patches and long-term maintenance for kernels, libraries, and frameworks. Learn more at https://tuxcare.com/endless-lifecycle-support/.

Role summary

We are seeking an experienced C Developer to join the ELS team. In this role you will backport security fixes, develop and test patches, and contribute to upstream open-source projects such as Apache HTTPD, OpenSSL, MySQL, and core language runtimes. This position focuses on secure, reliable maintenance of production-grade Linux software.

Key responsibilities

• Backport security and bug fixes from newer upstream releases, and develop custom patches where required.
• Create reproducible tests and automated checks for identified vulnerabilities.
• Contribute fixes and improvements to upstream open-source projects.
• Automate routine tasks such as CVE monitoring, patch application, and test execution.
• Maintain and improve CI/CD pipelines and test infrastructure for ELS products.
• Collaborate with cross-functional teams to validate patches and ensure reliable releases.

Requirements

• Minimum 4 years of professional experience programming in C.
• Strong proficiency with GNU/Linux environments and shell scripting.
• Experience with build systems such as autotools, make, and cmake.
• Familiarity with git-based development workflows and patch management.
• Ability to create reproductions, write tests, and debug complex issues using Linux debuggers and tools.

Nice to have

• Experience with C++, Rust, or other compiled languages.
• Experience with Python for automation and scripting.
• Familiarity with advanced debugging tools such as gdb, ftrace, BPF.

Benefits

• Fully remote work with flexible hours, work from any location worldwide.
• Paid 24 days vacation, 10 national holidays, and unlimited sick leave.
• Compensation for private medical insurance.
• Co-working, gym or sports reimbursement, and budget for education.

How to apply

Apply via the Workable job link provided. By applying you consent to processing of your personal data as described in CloudLinux's Candidate Privacy Notice at https://cloudlinux.com/candidate-privacy-notice.