CPU Verification Engineer

**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** Develop and execute comprehensive verification plans for CPU designs. • Design and implement verification environments, including testbenches, checkers, monitors, and stimulus. • Create and execute directed and constrained-random test scenarios to validate complex processor functionality. • Perform regression debugging and root-cause analysis of failures. • Drive functional and code coverage closure to meet quality targets. • Verify key CPU core and Uncore subsystems such as CPU core units, cache hierarchies, memory subsystems, coherency protocols, Fabric, and I/O. • Collaborate with architecture, design, and tools teams to debug and resolve functional and performance issues. • Apply and enhance advanced verification methodologies (e.g., UVM-based verification). • Leverage automation and AI-driven techniques to improve verification productivity and scalability. **Required technical and professional expertise** · 5 years or more experience in functional verification of processors, demonstrating a deep understanding of complete processor pipeline stages. · Good understanding of computer architecture, including Processor core design specifications, processor pipeline including Instruction Fetch, Branch Prediction, Dispatch, Load Store and execution units · Experience with high frequency, instruction pipeline designs. · At least 1 generation of Processor Core silicon bring up experience. · In depth understanding of industry microprocessor designs (e.g., x86, ARM, or RISC-V processor designs) · Exposure to system-level verification methodologies and techniques, ensuring holistic verification coverage across multiple levels of design · Proficiency in C++, Python scripting or similar object oriented programming languages. · Nice to haves - Knowledge of verification principles and coverage. - Knowledge of test generation tools and working with ISA reference model. - Experience with translating ISA specifications to testplan. - Understanding of Agile development processes. - Experience with DevOps design methodologies and tool **Preferred technical and professional experience** •Advanced Verification Techniques: Familiarity with advanced verification techniques such as RAS verification is a plus •Experience with Hardware Description Languages (HDLs): Proficiency in hardware description languages like Verilog and VHDL, enabling seamless collaboration with design teams and enhancing verification effectiveness. •Experience in System-Level Verification: Exposure to system-level verification methodologies and techniques, ensuring holistic verification coverage across multiple levels of design abstraction. 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.