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QA Engineer - Performance & Load Testing

Motion Recruitment Partners, LLCNew York, NY🇺🇸United States

Why this role stands out

You can make a significant impact on a global financial services enterprise by ensuring the stability of a major platform merger through meticulous performance and load testing. This hybrid role is ideal for a hands-on QA Engineer with extensive experience in load testing tools who thrives on analyzing complex metrics and optimizing large-scale systems. Apply now to contribute to critical infrastructure powering millions of transactions and gain valuable experience in a dynamic environment.

Quick overview

SeniorityMid Senior
Work modeOn Site
LocationNew York, NY, United States
HTTPWebSocketgRPCk6JavaScriptTypeScript

Job description

Job Title: QA Engineer - Performance & Load Testing
Location: New York, NY (Hybrid - 2-3 days onsite)
Type: Long-Term Contract (1+ years, potential to extend or convert)
The Opportunity
We are helping a global financial services giant scale their premium dining division through a massive platform merger. If you want to build highly scalable, real-time infrastructure that powers millions of daily transactions, this is your chance. We need a 100% hands-on Performance & Load Testing expert to drive system stability and tackle massive high-volume traffic challenges.
What You'll Do
  • Write maintainable, modular test code in JavaScript or TypeScript.
  • Build custom protocol clients (protobuf, gRPC, websockets) and design complex, data-driven load test scenarios.
  • Execute robust load tests across HTTP/API and event/websocket traffic.
  • Perform deep performance analysis by tracking latency percentiles, error rates, and throughput limits.
  • Trace, pinpoint, and resolve complex infrastructure and application bottlenecks.
  • Partner directly with engineering teams to optimize performance for a premier global platform.

What You Need
  • Extensive, hands-on expertise with k6 and strong coding skills (JavaScript/TypeScript).
  • Deep background in testing custom protocols (protobuf, gRPC, WebSockets) and HTTP/APIs.
  • Demonstrated ability to build scale-scenarios and isolate performance bottlenecks.
  • A strict commitment to working entirely as a hands-on individual contributor.

This is a long-term, highly visible role offering a flexible pay rate based on your exact expertise. You will be directly responsible for the performance of a premier global platform during a critical merger. Apply today and let's get you started.

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