C Developer Intern (worldwide, remote) at Cloudlinux · Madrid

We are seeking talented and motivated C Developer Interns to join our CloudLinux team. As an intern at CloudLinux, you will have the opportunity to gain hands-on experience in C development and contribute to the development of our innovative projects.

CloudLinux is a leading provider of Linux-based operating systems and security solutions for web hosting providers. Our products, including CloudLinux OS, KernelCare, and Imunify360, are used by thousands of companies worldwide.

We are currently looking for a C Developer Intern for one of our core teams:

• Endless Lifecycle Support (ELS) – extending the life of Linux distributions beyond their official end-of-life by providing critical security patches and updates. Interns in this team focus on backporting, patching, and ensuring long-term stability across different environments.

In this role, you will have the opportunity to:

• Work on real-world projects and contribute to the development of our products
• Collaborate with our experienced development team and learn from industry professionals
• Gain experience in writing clean, efficient, and maintainable code
• Participate in code reviews and follow best practices
• Learn how to write effective unit tests and ensure quality in software development
• Get exposure to different areas of C development, including backend development and system programming

This is a remote internship opportunity, allowing you to work from anywhere and have a flexible schedule.

If you are a passionate individual interested in gaining practical experience in C development and contributing to meaningful projects, we would love to hear from you!

Apply now and kick-start your career with CloudLinux!

What we’re looking for:

• Some C programming and debugging skills
• Experience using Git for development and patch/branch management
• Experience with GNU/Linux operating system (CLI) and shell scripting
• Basic experience with building the Linux kernel and troubleshooting related issues
• English proficiency at B1 level or above (you'll be communicating a lot in English, especially in writing);
• Self-starter who’s hungry to learn;
• Final-year student or entry-level engineer with strong basics;
• Able to read and reason about C / systems code, reviewing and validating patches is central;
• Solid fundamentals in algorithms and data structures;
• Comfortable using AI coding assistants day-to-day; basic prompting and able to spot when the output is wrong;
• Broad awareness of the current AI-assisted development landscape - different models for different tasks, common tooling (nice-to-have)

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 vacation, 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;
• Learn AI-assisted development workflows across the full development lifecycle, from CVE research and backporting to code review

By applying for this position, you consent to the processing of your personal data as described in our Privacy Policy (https://cl.cloudlinux.com/candidate-privacy-notice), which provides detailed information on how we maintain and handle your data.