QA Engineer - Performance & Load Testing

Omegahires; New York (NY); On-site; USD 140,000 - 180,000; Full time

Job summary

Omegahires is seeking a Senior Performance & Load Testing Specialist to design, execute, and analyze high-scale load scenarios across event-driven transactional platforms. You will focus on identifying bottlenecks before they impact production, using k6, Locust, Gatling, and telemetry tools.

The role requires deep expertise in performance engineering, with hands-on experience across synchronous HTTP/API and asynchronous real-time traffic, and strong cloud/containerization understanding.

Qualifications

• Proven track record in load, stress, and endurance testing for high-volume platforms.
• Hands-on design of scenarios for HTTP/API and WebSocket/event-driven traffic.
• Experience with performance tools and telemetry correlating test results with system health.

Responsibilities

• Design, execute, and analyze complex distributed load scenarios.
• Identify bottlenecks and potential failures before production.

Skills

Expert Performance Testing

Traffic design (synchronous & async)

Latency & diagnostics

Tools

k6

Locust

Gatling

Grafana

Prometheus

Datadog

Job description

Our Client is building a highly focused engineering squad for our high-scale, event-driven transactional platform. We are seeking top-tier Senior Performance & Load Testing Specialists—not generalists—who possess deep technical expertise in performance engineering. In this role, you will design, execute, and analyze complex distributed load scenarios across high-throughput financial systems, identifying critical system bottlenecks before they impact production.

Qualifications

Required Skills

• Expert Performance Testing: Proven track record in load, stress, and endurance testing for high-volume, event-driven platforms.
• Hands-on experience designing scenarios for both synchronous (HTTP/API) and asynchronous/real-time (WebSocket/Event-driven) traffic.
• Proficiency with developer-centric performance tools such as k6, Locust, or Gatling.
• Strong experience using telemetry tools (Grafana, Prometheus, Datadog) to correlate test results with system health metrics.
• Deep understanding of latency percentiles, resource utilization, and error rate diagnostics.

Preferred Skills

• Experience in high-scale Financial Services, Fintech, or payment processing environments.
• Hands-on experience integrating performance gates into modern CI/CD pipelines (GitHub Actions, GitLab, Jenkins).
• Strong understanding of cloud-native infrastructure, containerization (Docker, Kubernetes), and cloud platforms (AWS, GCP, or Azure).
• Familiarity with database profiling and tuning (SQL/NoSQL) under heavy transactional workloads.