CPU Processor Performance Verification Engineer

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

CPU Processor Performance Verification Engineer

You will be responsible for performance validation, correlation, characterization, and tuning of IBM Z processors, with a focus on both core-level and system-level performance. This role involves pre-silicon and post-silicon performance analysis, developing targeted workloads and benchmarks, and collaborating across hardware and software teams to optimize performance across the stack.

Key Responsibilities

As a Performance Verification Engineer for IBM Z, you will:

• Collaborate with micro-architects and RTL designers to validate performance features and ensure alignment with architectural models.
• Analyze and correlate performance across pre-silicon models, RTL simulations, and post-silicon measurements.
• Develop and execute performance test plans targeting IBM Z core and system-level features.
• Design and implement assembly and C/C++ tests to stress and validate performance-critical paths.
• Build checkers and monitors to verify performance features and detect anomalies.
• Conduct coverage analysis to ensure comprehensive validation of performance features.
• Debug and tune performance issues on silicon, including pipeline bottlenecks, cache behavior, and instruction throughput.
• Present performance findings and recommendations to cross-functional teams, including architecture, design, and software.

Required education

Bachelor's Degree

Preferred education

Master's Degree

Required technical and professional expertise

Required Skills

• 5+ years of experience in processor performance verification
• Deep understanding of IBM Z processor micro-architecture, including pipeline, cache hierarchy, branch prediction, and instruction scheduling.
• Exposure to other industry microprocessor designs (e.g. ARM, x86, RISC-V)
• Experience with performance modeling, profiling, and analysis tools.
• Strong programming skills in Assembly (z/Architecture), C/C++, Python, and scripting languages.
• Familiarity with VHDL for RTL-level validation.
• Ability to work well in a team and be productive under aggressive schedules
• Strong communication skills

ABOUT BUSINESS UNIT

IBM Systems helps IT leaders think differently about their infrastructure. IBM servers and storage are no longer inanimate - they can understand, reason, and learn so our clients can innovate while avoiding IT issues. Our systems power the world's most important industries and our clients are the architects of the future. Join us to help build our leading-edge technology portfolio designed for cognitive business and optimized for cloud computing.

YOUR LIFE @ IBM

In a world where technology never stands still, we understand that, dedication to our clients success, innovation that matters, and trust and personal responsibility in all our relationships, lives in what we do as IBMers as we strive to be the catalyst that makes the world work better.

Being an IBMer means you'll be able to learn and develop yourself and your career, you'll be encouraged to be courageous and experiment everyday, all whilst having continuous trust and support in an environment where everyone can thrive whatever their personal or professional background.

Our IBMers are growth minded, always staying curious, open to feedback and learning new information and skills to constantly transform themselves and our company. They are trusted to provide on-going feedback to help other IBMers grow, as well as collaborate with colleagues keeping in mind a team focused approach to include different perspectives to drive exceptional outcomes for our customers. The courage our IBMers have to make critical decisions everyday is essential to IBM becoming the catalyst for progress, always embracing challenges with resources they have to hand, a can-do attitude and always striving for an outcome focused approach within everything that they do.

Are you ready to be an IBMer?

ABOUT IBM

IBM's greatest invention is the IBMer. We believe that through the application of intelligence, reason and science, we can improve business, society and the human condition, bringing the power of an open hybrid cloud and AI strategy to life for our clients and partners around the world.

Restlessly reinventing since 1911, we are not only one of the largest corporate organizations in the world, we're also one of the biggest technology and consulting employers, with many of the Fortune 500 companies relying on the IBM Cloud to run their business.

At IBM, we pride ourselves on being an early adopter of artificial intelligence, quantum computing and blockchain. Now it's time for you to join us on our journey to being a responsible technology innovator and a force for good in the world.

IBM 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, genetics, pregnancy, disability, neurodivergence, age, or other characteristics protected by the applicable law. IBM is also committed to compliance with all fair employment practices regarding citizenship and immigration status.

OTHER RELEVANT JOB DETAILS

IBM offers a competitive and comprehensive benefits program. Eligible employees may have access to:

- Healthcare benefits including medical & prescription drug coverage, dental, vision, and mental health & well being

- Financial programs such as 401(k), cash balance pension plan, the IBM Employee Stock Purchase Plan, financial counseling, life insurance, short & long- term disability coverage, and opportunities for performance based salary incentive programs

- Generous paid time off including 12 holidays, minimum 56 hours sick time, 120 hours vacation, 12 weeks parental bonding leave in accordance with IBM Policy, and other Paid Care Leave programs. IBM also offers paid family leave benefits to eligible employees where required by applicable law

- Training and educational resources on our personalized, AI-driven learning platform where IBMers can grow skills and obtain industry-recognized certifications to achieve their career goals

- Diverse and inclusive employee resource groups, giving & volunteer opportunities, and discounts on retail products, services & experiences

We consider qualified applicants with criminal histories, consistent with applicable law.

This position was posted on the date cited in the key job details section and is anticipated to remain posted for 21 days from this date or less if not needed to fill the role.

IBM will not be providing visa sponsorship for this position now or in the future. Therefore, in order to be considered for this position, you must have the ability to work without a need for current or future visa sponsorship.

The compensation range and benefits for this position are based on a full-time schedule for a full calendar year. The salary will vary depending on your job-related skills, experience and location. Pay increment and frequency of pay will be in accordance with employment classification and applicable laws. For part time roles, your compensation and benefits will be adjusted to reflect your hours. Benefits may be pro-rated for those who start working during the calendar year.

Client-provided location(s): Austin, TX

Job ID: IBM-61746

Employment Type: OTHER

Posted: 2025-10-02T18:47:26