Lead Performance Engineer - Sunnyvale, CA

HCL Global Systems Inc; Sunnyvale (CA); Hybrid; USD 140,000 - 210,000; Full time

Job summary

HCL Global Systems Inc in Sunnyvale, CA, is seeking a Lead Performance Engineer to design, develop, and execute performance testing strategies for enterprise and cloud-based applications. The role requires hands-on experience with JMeter, LoadRunner, K6, Gatling, DataDog, Dynatrace, and API/web testing, plus collaboration with DevOps and engineering teams to ensure scalable and reliable systems.

Hybrid work model with local candidates preferred.

Qualifications

• 8–10 years of experience in performance engineering.

Responsibilities

• Design, develop, and execute performance testing strategies for enterprise and cloud-based applications.
• Triaging on network and AWS infra systems.
• Analyze results and provide actionable recommendations.
• Integrate performance tests into CI/CD pipelines.
• Prepare detailed performance test reports and present findings to stakeholders.

Skills

Performance testing

Next.js testing

CI/CD collaboration

Tools

Apache JMeter

LoadRunner

K6

Gatling

DataDog

Dynatrace

Jenkins

Job description

Hybrid role (Submit local candidates, F2F interview mode)

Role Description:

• We are looking for a skilled Lead Performance Engineer to design, develop, and execute performance testing strategies for enterprise and cloud-based applications. The ideal candidate has hands-on experience with JMeter, Load runner, K6, Gatling, Data Dog, Dynatrace skills, and solid expertise in API, Web and automation testing.
• Candidate will work closely with development, QA, DevOps, and architecture teams to ensure applications are scalable, reliable, and performant. Key Responsibilities
• 12+ Yrs of experience in Performance Engineering
• Triaging Exp on network and AWS infra systems is required
• Design, develop, and maintain performance test scripts using Apache JMeter or similar tools for web, API, and backend systems
• Conduct load, stress, endurance, and scalability testing for applications and microservices
• Design, develop, and maintain automated test suites for Next.js applications, covering unit, integration, and E2E tests.
• Perform API performance testing (REST/JSON, SOAP) and integrate with automation frameworks
• Analyze test results, identify performance bottlenecks, and provide actionable recommendations
• Monitor system performance metrics (CPU, memory, GC, I/O, network) during test execution
• Collaborate with development and DevOps teams to optimize application and infrastructure performance
• Integrate performance tests into CI/CD pipelines
• Prepare detailed performance test reports and present findings to stakeholders
• Continuously improve testing frameworks, tools, and best practices Required Skills & Qualifications
• Strong experience in performance testing and engineering best practices
• Hands-on expertise with Apache JMeter (test plans, scripting, listeners, distributed testing)
• Front end performance testing experience on Next.js application
• Design and deployment of performance test framework
• Experience with API automation and performance testing (REST, SOAP)
• Knowledge of HTTP/HTTPS protocols, JSON, XML
• Experience with performance monitoring tools (APM, server logs, JVM monitoring)
• Familiarity with CI/CD tools (Jenkins, Git, etc.)
• Strong analytical, troubleshooting, and communication skills"

Experience Required: 8- 10

** All submissions must have LinkedIn id of Candidate**