Senior Performance Tester

Kardow; Charlotte (NC); On-site; USD 110,000 - 140,000; Full time

Job summary

Kardow is seeking a Senior Performance Tester in Charlotte, NC to validate enterprise application performance and reliability. You will design and execute comprehensive performance tests, analyze results, and drive optimization across CI/CD pipelines.

Ideal candidates bring hands-on experience with JMeter/LoadRunner/Gatling, APM tools, and API performance testing for REST/SOAP, with strong collaboration across engineering and operations to meet benchmarks.

Qualifications

• BS/BA in CS, Eng, IT or equivalent
• Hands-on performance testing experience
• Familiar with REST/SOAP API testing
• Experience with CI/CD and version control

Responsibilities

• Design, develop, and execute performance, load, stress, and scalability tests
• Analyze performance metrics and identify bottlenecks
• Utilize tools like JMeter, LoadRunner, Gatling
• Monitor system behavior with AppDynamics, Dynatrace, Prometheus, Grafana
• Collaborate with dev, QA, infra, and business teams to resolve issues
• Create test plans, scripts, baselines, and reports
• Support API performance testing for REST and SOAP services
• Participate in CI/CD with Jenkins and Git
• Review logs, metrics, and DB performance data
• Contribute to continuous improvement for performance and reliability
• Execute performance testing through SDLC
• Develop scenarios simulating production workloads
• Evaluate system behavior under varying loads
• Document findings and recommendations
• Establish performance benchmarks with stakeholders
• Assist test environment planning and data management
• Support performance validation for GIS and mapping apps

Skills

Performance testing

Test automation

REST API testing

SOAP API testing

Troubleshooting

Education

Bachelor's degree in CS/Engineering/IT

Tools

JMeter

LoadRunner

Gatling

AppDynamics

Dynatrace

Prometheus

Grafana

Jenkins

Git

Job description

Our client in the utilities and energy sector is seeking a Senior Performance Tester to join a long-term technology initiative focused on enterprise application performance, reliability, and scalability. This position will play a key role in validating system performance, identifying bottlenecks, and ensuring applications meet business and technical expectations before deployment.

The ideal candidate will have a strong background in performance testing, test automation, monitoring tools, and application performance analysis, along with experience supporting modern development and deployment practices.

Responsibilities

• Design, develop, and execute comprehensive performance, load, stress, and scalability tests
• Analyze application performance metrics and identify root causes of bottlenecks
• Utilize performance testing tools such as JMeter, LoadRunner, or Gatling
• Monitor system behavior using tools including AppDynamics, Dynatrace, Prometheus, Grafana, or similar technologies
• Collaborate with development, QA, infrastructure, and business teams to resolve performance-related issues
• Create detailed test plans, test scripts, performance baselines, and test result reports
• Support API performance testing for REST and SOAP services
• Participate in CI/CD processes using tools such as Jenkins and Git
• Review server logs, system metrics, and database performance data to troubleshoot issues
• Contribute to continuous improvement initiatives focused on application performance and reliability
• Execute performance testing activities throughout the software development lifecycle
• Develop test scenarios that simulate real-world production workloads
• Evaluate system behavior under varying load conditions
• Document findings and provide recommendations for optimization
• Work closely with project stakeholders to establish performance benchmarks and success criteria
• Assist with test environment planning, test data management, and execution coordination
• Support performance validation efforts for enterprise GIS and mapping-related applications

Experience Requirements

• 3+ years of hands-on experience in software quality assurance and performance testing
• Strong experience with performance testing tools such as JMeter, LoadRunner, and/or Gatling
• Experience using application performance monitoring and observability tools
• Familiarity with CI/CD pipelines and version control systems
• Experience testing REST and SOAP APIs
• Knowledge of database concepts and server administration fundamentals
• Strong analytical and troubleshooting skills with the ability to interpret complex performance data, graphs, and logs
• Experience With ESRI And/or GIS Technologies Is Highly Preferred
• Excellent written and verbal communication skills

Education Requirements

• Bachelor's degree in Computer Science, Engineering, Information Technology, or a related field
• Equivalent combination of education and practical experience will be considered