Performance Tester

• We are looking for a Senior Performance Test Engineer with strong expertise in performance engineering, load testing, and bottleneck analysis across web and API-based applications.
• The ideal candidate will be responsible for designing, executing, and analyzing performance tests to ensure applications meet scalability, stability, and response-time goals.
• This role involves close collaboration with development, DevOps, and architecture teams to drive end-to-end performance optimization throughout the SDLC.
  

Key Responsibilities

• Design and implement performance test strategies for complex, distributed applications across web, mobile, and API layers.
• Develop and execute load, stress, soak, and endurance tests using tools such as JMeter, LoadRunner, or k6.
• Create parameterized, reusable, and maintainable test scripts that simulate real-world user behavior.
• Work closely with application, database, and infrastructure teams to identify performance bottlenecks and recommend optimizations.
• Perform baseline and benchmarking to establish performance SLAs and track improvement trends.
• Monitor and analyze system resource utilization (CPU, memory, I/O, GC, thread usage) during test execution.
• Generate detailed test result reports, correlating application metrics with system performance data.
• Contribute to root cause analysis (RCA) of performance issues and collaborate on tuning recommendations.
• Integrate performance tests within CI/CD pipelines for continuous validation.
• Mentor junior performance testers and contribute to the establishment of performance engineering best practices.
  

Required Skills & Experience

• 6+ years of experience in performance testing and engineering for enterprise-grade applications.
• Experience with Retail domain in E-commerce.
• Proficiency in performance testing tools: Apache JMeter (preferred), LoadRunner, or k6.
• Hands-on experience in profiling and monitoring tools such as Dynatrace, AppDynamics, Grafana, Prometheus, or New Relic.
• Strong understanding of web technologies (HTTP, REST, caching, session management) and API testing.
• Expertise in performance analysis — CPU, memory, garbage collection, network latency, and database tuning.
• Experience in CI/CD pipelines and integrating performance tests into Jenkins, GitHub Actions, or similar tools.
• Solid knowledge of test result correlation and trend analysis using metrics and dashboards.
• Ability to interpret and optimize application server configurations (Tomcat, WebLogic, IIS, Nginx).
• Experience in scripting (Python, Groovy, Java, or shell scripting) for test customization and automation.
• Excellent analytical, troubleshooting, and problem-solving skills.
• Good-to-Have Skills: Familiarity with cloud-based performance testing (AWS, Azure, or GCP environments).
• Exposure to containerized environments (Docker, Kubernetes) and their performance impact.
• Understanding of microservices performance patterns and distributed system tracing.
• Experience using APM tools to perform end-to-end transaction tracing.
• Basic knowledge of database query optimization and indexing.
• Awareness of DevOps and SRE practices for continuous performance monitoring.