Senior Performance QA Engineer (C#, JS)

What You'll Do

Design, develop, execute, and maintain performance, load, stress, endurance, and scalability tests.

Build and enhance JMeter test frameworks and scripts, including JavaScript-based scripting and customization.

Develop and maintain automated test solutions using C# and Selenium WebDriver.

Analyze application and infrastructure performance to identify bottlenecks, risks, and optimization opportunities.

Collaborate with Engineering, Product, and DevOps teams to define and validate non-functional requirements and performance SLAs.

Produce clear performance reports and recommendations for stakeholders.

Contribute to CI/CD pipelines and drive automation of testing and reporting activities.

Continuously improve performance engineering practices, tools, and processes.

Proven experience as a Performance Test Engineer, NFR QA Engineer, or similar role.

Strong hands-on expertise with:

JMeter (JavaScript-based scripting)

C#

Selenium WebDriver

Solid understanding of load, stress, scalability, capacity, and endurance testing methodologies.

Experience with API performance testing and troubleshooting complex distributed systems.

Knowledge of AI-assisted engineering tools such as GitHub Copilot.

Hands-on AWS experience, including:

EC2

ECS

CloudWatch

Strong analytical, debugging, and problem-solving skills.

Excellent communication and collaboration abilities.

Skills: Performance Testing

NFR Testing

JMeter

JavaScript

C#

Selenium WebDriver

AWS

ECS

EC2

CloudWatch

Test Automation

CI/CD

Quality Engineering

Performance Engineering

Experience with CI/CD tools such as Azure DevOps, TeamCity, Jenkins, GitHub Actions, or GitLab CI.

Knowledge of Docker, Kubernetes, and containerized environments.

Experience with observability tools such as Grafana, Prometheus, Splunk, or OpenTelemetry.

Experience with Postman, Rest Assured, or LoadRunner.