Urgent need Lead Performance Engineer (12+ years) Location: Sunnyvale, CA (local only)

Tech Mirrors; Sunnyvale (CA); On-site; USD 140,000 - 190,000; Full time

Job summary

Tech Mirrors in Sunnyvale, CA seeks a Lead Performance Engineer with 12+ years of experience to design, develop, and execute performance testing strategies for enterprise and cloud applications. The role requires hands-on work with JMeter, LoadRunner, k6, Gatling, Datadog and Dynatrace, and collaboration with DevOps, QA, and architecture teams to ensure scalable, reliable systems.

The position is contract-based with on-site interview in Sunnyvale and local candidates preferred.

Qualifications

• 12+ years of experience in performance engineering.
• Hands-on experience with JMeter, LoadRunner, k6, Gatling, Datadog and Dynatrace.
• Solid expertise in API, Web and automation testing.
• Ability to design, develop, and execute performance testing strategies.

Responsibilities

• 12+ years of experience in Performance Engineering.
• Design, develop, and maintain performance test scripts for web, API, and backend systems.

Skills

Performance testing

API testing

CI/CD

Cloud testing

Collaboration

Tools

JMeter

LoadRunner

k6

Gatling

Datadog

Dynatrace

Job description

Lead Performance Engineer (12+ years)
Location: Sunnyvale, CA (F2F interview, candidates should be local to Sunnyvale office)
Contract

Role Descriptions:

• 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.
• 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.