**Introduction** At IBM Infrastructure & Technology, we design and operate the systems that keep the world running. From high-resiliency mainframes and hybrid cloud platforms to networking, automation, and site reliability. Our teams ensure the performance, security, and scalability that clients and industries depend on every day. Working in Infrastructure & Technology means tackling complex challenges with curiosity and collaboration. You’ll work with diverse technologies and colleagues worldwide to deliver resilient, future-ready solutions that power innovation. With continuous learning, career growth, and a supportive culture, IBM provides the opportunities to build expertise and shape the infrastructure that drives progress. **Your role and responsibilities** As a Back-End Developer specializing in Linux, you will design, develop, test, and deliver features in Linux Operating Systems for generic and s390 (zSystems) architecture. You will utilize your knowledge of hardware and firmware capabilities to create architecture-specific and agnostic features, ensuring end-users can leverage the full potential of the hardware platform and microprocessor. Your primary responsibilities will include: • Develop Linux Features: Design, develop, test, and deliver features in Linux Operating Systems for generic and s390 (zSystems) architecture, leveraging knowledge of hardware and firmware capabilities. • Problem Determination: Perform problem determination and problem source identification in operating system environments, collaborating with the Linux Kernel community (Kernel.org) as needed. • Community Collaboration: Work closely with the Linux Kernel community, understanding the Linux Kernel Open Source Community and its workings, and utilizing open-source tools like GitHub and Linux editors. • Interface Layer Understanding: Understand the hardware, firmware, Operating System, and application interface layers to ensure seamless integration and optimal performance. **Required technical and professional expertise** • Exposure to Linux Development: Experience working with Linux Operating Systems, including design, development, testing, and delivery of features for generic and s390 (zSystems) architecture. • Hardware and Firmware Knowledge: Familiarity with hardware and firmware capabilities, with the ability to utilize this knowledge to design and develop architecture-specific and agnostic features. • Open Source Tools: Exposure to open-source tools like GitHub and Linux editors, with an understanding of their application in Linux development. • Operating System Environments: Experience working in operating system environments, including problem determination and problem source identification. • Linux Kernel Community: Understanding of the Linux Kernel Open Source Community and its workings, with the ability to collaborate with the community as needed. **Preferred technical and professional experience** • Linux Kernel Development: Exposure to Linux kernel development, including understanding of kernel internals, device drivers, and kernel modules. Familiarity with kernel debugging and troubleshooting techniques. • Advanced Linux Tools: Experience with advanced Linux tools such as perf, ftrace, and systemtap, with the ability to utilize these tools for performance analysis and optimization. • Open Source Contributions: Exposure to contributing to open-source projects, including understanding of open-source licensing, code review, and community collaboration. 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.