zOS Validation 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** As a QA/Test Developer: Functional/System Verification, you will execute tasks to fully test a service or end-to-end system to ensure it functions according to specifications and client requirements. You will utilize your knowledge of the domain and testing methodologies, tools, and techniques to deliver high-quality solutions. Your primary responsibilities will include: • Design Testing Activities: Develop test cases, scenarios, and use cases to validate service or system functionality, and identify potential issues. • Execute Testing: Perform functional verification testing or system verification testing to ensure services or systems meet business needs and client requirements. • Investigate Problems: Recreate problems uncovered during testing, execute fix validations, and provide feedback on usability, serviceability, and documentation. • Report Status: Inform the appropriate audience of testing progress and results, ensuring transparency and effective communication. • Provide Feedback: Offer insights on testing outcomes, identifying areas for improvement and opportunities for growth. **Required technical and professional expertise** * Minimum 3+ years of experience in systems or OS role * Strong hands on experience in PL/X and C * Strong debugging skills * Experience with exercising/validation of system from user space, and knowledge of user space API * Strong interpersonal and communication skills, both verbal and written. * Demonstrated execution experience of Systems project development * Ability to collaborate across disciplines and teams, and work effectively in a global team environment. * Gen AI exposure , usage of AI Tools in testing productivity improvement • Domain Knowledge: Exposure to the mainframe, including its core concepts, processes, and technologies. • Testing Methodologies: Experience working with various testing methodologies, tools, and techniques to design and execute testing activities. • Test Case Development: Exposure to developing test cases, scenarios, and use cases to validate service or system functionality. • Problem Investigation: Experience investigating problems uncovered during testing, recreating issues, and executing fix validations. • Testing Tools: Familiarity with testing tools and technologies used to support functional verification testing or system verification testing. • Familiarity with Testing Frameworks: Exposure to various testing frameworks and technologies used to support functional verification testing or system verification testing. • Knowledge of Test Automation: Experience working with test automation tools and techniques to design and execute testing activities. • Understanding of Agile Methodologies: Exposure to agile development methodologies and their application in testing environments. **Preferred technical and professional experience** * Exposure or working experience with z/OS. * Exposure or working experience with zfirmware APIs/HMC. 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.