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Trusted by the world’s best brands for more than 50 years, Software AG’s AI-enabled process intelligence, application development, high-performance database, and strategic portfolio management solutions are used by banks, retailers, manufacturers, governments and more.
Software AG’s Adabas database & Natural development platform are used by the world’s leading organizations to build and deploy high-performance, mission-critical applications for IBM Z®, Linux® and cloud. Governments and businesses (in finance, manufacturing, retail and more) tailor these applications to give their organization a distinct competitive advantage and optimize them to meet the most demanding operational service level agreements. With a pledge to innovate Adabas & Natural to 2050 and beyond, we ensure our customer’s mission-critical Adabas & Natural applications are Future ready. Now.
Be you, join us.
We are looking for a Senior Quality Engineer – Test Automation & Performance (Java on z/OS) with a sharp focus on performance validation, automation, and optimization of enterprise Java applications running on IBM z/OS mainframe systems. In this role, you will closely work with developers, ensuring that both functional correctness and non-functional performance metrics are continuously met and exceeded.
Your expertise in automating test environments, analyzing JVM-level and system-level performance, and driving test efficiency in high-throughput mainframe ecosystems will be critical to our mission of delivering scalable, optimized, and resilient enterprise systems.
Essential Skills
Design and implement automated test frameworks for performance, integration, and system-level testing of Java and of Cobol applications on z/OS, focusing on speed, scalability, and efficiency.
Partner with development to establish early performance baselines, define SLA/SLO thresholds, and proactively identify performance regressions.
Automate the provisioning and configuration of performance test environments in z/OS, including Java runtimes, USS scripts, DB2 data, and WLM policies.
Execute and analyze load, stress, and endurance tests using native and third-party tools; interpret JVM GC logs, heap dumps, CPU usage, and z/OS SMF/RMF metrics.
Build validation harnesses for Java services utilizing JNI, JDBC, SQLJ, and DB2 for z/OS – optimized for performance-sensitive test scenarios.
Use tools like OMEGAMON, MainView, RMF Monitor, and custom scripts to track system resource consumption, memory contention, and processor utilization (including zIIP/zAAP offload efficiency).
Integrate performance validations into CI/CD pipelines and gate releases based on strict performance metrics and KPIs.
Minimum Requirements:
Bachelor’s or master’s degree in computer science, Engineering, or a related technical field.
5+ years in software QA, with at least 3 years focused on performance testing in IBM z/OS environments.
Proficient in Java application testing, especially Java applications deployed on USS (UNIX System Services) under z/OS.
Strong knowledge of JVM tuning, including GC strategies, heap configuration, threading behavior, and WLM class optimization on z/OS.
Expertise in test automation using scripting languages (e.g., Rexx, Shell, Python) and job control (JCL) on mainframe systems.
Proven experience with performance diagnostics tools like IBM OMEGAMON, RMF, SMF, SDSF, and JVM dump analysis tools.
Experience validating Java-native and JNI-integrated modules, as well as DB2 for z/OS workloads via SQLJ/JDBC.
What’s in it for you?
Earn competitive total compensation and receive comprehensive country-specific medical and other benefits.
Enjoy time and location flexibility with our Hybrid Working Model, which allows a remote workshare of up to 60%. Work anywhere in your country or abroad for up to 10 days per year.
Set yourself up for success in your new role by upgrading your home office space using your one-time hybrid work payment.
Lean on the Employee Assistance Program for support during some of life’s most common but difficult challenges.