Come work at a place where innovation and teamwork come together to support the most exciting missions in the world! Job Description As an Applications & Systems Performance QA Engineer, you will be part of a motivated engineering team. You will be working on the Qualys’ "Next-generation Platform & Middleware". Working with a team of engineers and architects, you will be responsible for prototyping, designing, developing tools to benchmark middleware and platform. This is a great opportunity to be an integral part of a team building Qualys’ next generation Micro-Services based technology platform processing over a 100 million transactions and terabytes of data per day, leverage open source technologies, and work on challenging and business-impacting projects. Role and responsibilities: • Strong hands-on experience with JMeter, LoadRunner, or similar performance tools. • Experience in workload modeling, test planning, execution, and analysis. • Expertise in performance benchmarking, stress, load, endurance, and scalability testing. • Strong knowledge of application monitoring tools like AppDynamics, Grafana, Dynatrace, or Splunk. • Experience in identifying bottlenecks across application, database, API, and infrastructure layers. • Good understanding of Microservices, Kubernetes, Docker, and Cloud platforms (AWS/Azure/GCP). • Experience with API performance testing and distributed systems. • Strong SQL and database performance analysis skills. • Ability to analyze JVM, memory, CPU, thread dumps, and GC behavior. • Experience integrating performance tests into CI/CD pipelines. • Strong debugging, analytical, and problem-solving skills. • Ability to collaborate with Dev, QA, SRE, and Product teams for performance improvements. • Exposure to production monitoring and performance tuning is preferred. • Good communication, ownership, and leadership skills.