Linux Kernel OS Developer

**Introduction** We’ve been expanding our Linux Kernel Engineering team, hiring early-career professionals to grow our talent pipeline. This position, however, is a more mid-senior role—ideal for developers who bring 3+ years of hands-on, professional experience working with the Linux kernel and low-level system software. You’ll play a key part in designing, optimizing, and contributing to the technologies that drive our next-generation enterprise systems. Why Join Us * Build on your expertise by owning end-to-end kernel development in a high-impact environment. * Collaborate with and mentor early-career developers while driving innovation in open-source software. * Hybrid work model with onsite collaboration 3 days per week for hands-on integration and team synergy. * Be part of a company that actively contributes to and supports open-source communities. * Make a measurable difference in the performance, stability, and scalability of enterprise-grade systems. **Your role and responsibilities** * Lead the design and development of new kernel features, enhancements, and device drivers. * Analyze and optimize system performance in key areas like memory management, process scheduling, and I/O subsystems. * Diagnose, debug, and resolve complex kernel-level issues, collaborating closely with global and open-source teams. * Contribute code upstream to public open-source repositories (e.g., the Linux kernel community). * Work with Git, Python, and CI/CD tools (e.g., Jenkins) to automate, test, and maintain system integrity. * Partner with clients to analyze, reproduce, and solve deep technical challenges. **Required technical and professional expertise** * Demonstrated professional experience in low-level software or kernel development (C/C++, Rust). * Strong understanding of operating system internals, including memory management, scheduling, interrupts, and device drivers. * Experience with source code management (Git), scripting (Bash), and automation frameworks (Jenkins). * Demonstrated involvement and contributions to open-source communities, ideally the Linux kernel or related projects. * Working knowledge of modern I/O technologies (PCI, NVMe, RDMA). * Excellent problem-solving and performance analysis skills using kernel debugging tools. **Preferred technical and professional experience** * Previous contributions to Open Source projects Skills in current I/O technologies (e.g. PCI, NVMe, RDMA) * Skills in IBM Z architecture ("Principles of Operations"), Z assembler and I/O concepts IBM is committed to creating a diverse environment and is proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, caste, genetics, pregnancy, disability, neurodivergence, age, veteran status, or other characteristics. IBM is also committed to compliance with all fair employment practices regarding citizenship and immigration status.