**Introduction** India Systems Development Lab (ISDL) is part of IBM Systems world-wide technology development lab. Established in 1996, the Lab is headquartered in India's Silicon Valley and startup hub - Bengaluru, with a strong presence in Pune and Hyderabad. Developers at ISDL deliver technology innovations across the entire Systems portfolio - z Systems, Power / OpenPOWER Systems and Storage. The team here works across the entire stack from processor design, firmware, operating system to software defined storage. The lab also focuses on innovations, thanks to the creative energies of the teams. The lab has contributed over 400+ patents in cutting edge technologies and inventions so far. While computing veers towards cognitive, cloud, mobile, social, and security, the lab has significantly contributed to not just new products focused in these areas, but has also ushered in new development models such as Agile, Design Thinking and DevOps. **Your role and responsibilities** We are looking for qualified system software engineer candidates to be part of our IBM Z Systems team, to help us take z Linux development to the next level on the mainframe. **Required technical and professional expertise** 1. Expert level C programming 2. Solid knowledge of GNU GCC Extended Asm (a GNU extension to the C language family) including hands on experience with constraints and clobbers with respect to some ISA 3. Strong Operating System development skills (e.g. process scheduling, multi-processing support, memory management) including device driver programming 4. Expert level SMP programming skills (synchronization primitives, barriers, etc..) 5. Participated in Linux kernel development (preferrably with upstream community interactions e.g. commits in github,gitlab oder kernel.org) 6. Skills in SCSI architecture (t10.org) and the Linux SCSI stack & device drivers 7. Skills in Fibre Channel Protocol (FCP) and FCP-based storage area networks (SANs) 8. Skills in Linux blocklayer, multipathing and file systems 9. Proficiency in working with Linux OS, device drivers or related system technologies 10. Working knowledge of Linux and solid experience on Linux user space, kernel or driver development with C/C+11. Proficiency in working with Linux MPIO or any other multipathing software. 12. Working knowledge of Linux and solid experience on Linux user space, kernel or driver development with C/C+ **Preferred technical and professional experience** 1)Strong team player with good communication and interpersonal skills 2) Proven ability to work effectively in a global team environment 3) Proven command over the English language, both written and verbal 4) Demonstrated ability to deal with ambiguity and deliver under pressure and tight schedules 5) Experience on Open Source contribution, especially some mainstream projects, such as Linux kernel, Gnome and etc. 6) Storage Area Network Concepts and FC protocol.