**Introduction** At IBM, work is more than a job - it's a calling: To build. To design. To code. To consult. To think along with clients and sell. To make markets. To invent. To collaborate. Not just to do something better, but to attempt things you've never thought possible. Are you ready to lead in this new era of technology and solve some of the world's most challenging problems? If so, lets talk. **Your role and responsibilities** Crypto Express Adapter on z Systems allows companies to protect data and workloads from physical and logical attacks through cryptography. Cryptography is crucial for secure processing when applications must communicate with distributed elements or assess the validity of the data being processed. Candidate will be part of world class high-performance hardware security module (HSM) firmware team. The responsibility of the firmware team is to provide top-level security for processing and high-speed cryptographic offload **Required technical and professional expertise** •6+ years of relevant Industry experience •Very strong in C and data structures, preferably in developing multi-core or multi-threaded applications. •Deep knowledge of Linux kernel internals (process scheduler, memory management, concurrency/synchronization, memory allocation, file systems) and profiling. •Experience in device driver development and support for NIC, HBA or Graphics cards •Understanding of riscv / arm architecture and micro architecture features likes Caches, MMU, SMP, coherency •Strong debugging skills •Experience with exercising/validation of system from user space, and knowledge of user space API **Preferred technical and professional experience** Experience with SSl/TLS , Crypto Concepts