Software Engineer III

It's fun to work in a company where people truly BELIEVE in what they're doing! Job Description Summary: Rocket Software is seeking an experienced Senior Software Test Engineer to join our mainframe analytics and performance product teams. In this role, you will be a proactive champion for product quality—shaping test strategy, extending our automated test capabilities, influencing product direction, and helping define an excellent user experience. You’ll work on technically deep products operating in complex IBM mainframe environments. Experience with z/OS, IMS or CICS, scripting languages, and test automation frameworks will provide a strong foundation. We also welcome candidates with backgrounds in mainframe systems programming, application development, or production support who are motivated to grow in a specialised and challenging testing domain. High‑quality testing leads to high‑quality products. If you’re passionate about software quality and enjoy working closely with highly skilled engineers, we’d love to hear from you. As a Senior Software Test Engineer, you will be a key contributor within our mainframe analytics and performance development teams. You will quickly develop a deep understanding of complex system behaviour and take clear ownership of product quality. You’ll help mentor junior team members, challenge quality assumptions, and collaborate closely with development and product partners to deliver robust, performant, and reliable software. Responsibilities Own product quality across the full lifecycle—from early design through release and ongoing supportability Architect, extend, and maintain scalable automated test frameworks for mainframe-based analytics and performance products Treat test automation as software engineering, applying sound design principles, reviews, and a focus on long‑term maintainability Partner closely with developers and product owners to improve testability, usability, and system resilience Validate not only functional correctness, but also performance, scalability, failure modes, user experience, and operational behaviour Apply deep system knowledge to influence product design decisions before defects are introduced Continuously evolve test strategy as system complexity and real‑world customer usage grows Required Skills and Experience Hands-on experience with IBM mainframe environments (z/OS) Experience designing, building, or extending automated test systems or frameworks (not just writing individual test cases) Proficiency in one or more scripting or programming languages commonly used for automation Highly Desirable Skills and Experience Background in mainframe systems programming or application development Hands-on experience with IMS (applications, transactions, or system interactions) Exposure to performance, capacity, or analytics software Experience diagnosing production issues and feeding those learnings back into automated test coverage Curiosity, adaptability, and a willingness to learn deeply in a technically demanding domain The successful applicant will bring strong technical judgement, an architectural mindset, attention to detail, and enthusiasm for working in a highly collaborative, technically deep engineering environment. You’ll also demonstrate a proactive approach to researching, evaluating, and applying new technologies, processes, and practices to continuously improve product quality. Rocket Software’s Perth office is located in the Elizabeth Quay precinct, overlooking the Swan River, placing it at the heart of the city’s vibrant waterfront and business district. The office is continuing to grow and evolve, reflecting Rocket’s long-term investment in the region. This year marks an important milestone with the introduction of the Next Gen Program , welcoming ten recent graduates into the team and strengthening the office’s focus on developing emerging engineering talent. Together, the location, growth, and commitment to early‑career development make Rocket Perth a dynamic and exciting place to work. . Rocket Software Inc. 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, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. Rocket Software Inc. is also committed to compliance with all fair employment practices regarding citizenship and immigration status. As part of our commitment to a safe and trustworthy workplace, we include background and reference checks in our hiring process. Rocket is committed to working with and providing reasonable accommodation to individuals with physical and mental disabilities. If you need special assistance or an accommodation while seeking employment, please call: 781-577-4321 or send an email to . We will make a determination on your request for reasonable accommodation on a case-by-case basis. If you like wild growth and working with happy, enthusiastic over-achievers, you'll enjoy your career with us!