API/UI/Mobile App performance Tester
Job in
Des Plaines, Cook County, Illinois, 60018, USA
Listed on 2026-06-04
Listing for:
Datum Software, Inc
Full Time
position Listed on 2026-06-04
Job specializations:
-
IT/Tech
IT QA Tester / Automation, Systems Analyst, Technical Support, Cloud Computing
Job Description & How to Apply Below
Role Name: API / UI / Mobile App Performance Tester
Location:
New York, NY
Job Description
Job Title:
Performance Test Engineer – Neo Load (API / UI / Mobile)
Job Summary
We are seeking a skilled Performance Test Engineer with hands-on experience in Neo Load to perform API, UI, and mobile application performance testing. The role involves designing performance test strategies, executing load tests, analyzing system behavior, and ensuring application scalability, stability, and reliability in production-like environments.
Key Responsibilities:
- Design and execute performance, load, stress, spike, and endurance tests
- Develop and maintain performance test scripts using Neo Load
- Perform API performance testing (REST/SOAP)
- Conduct UI performance testing for web applications
- Execute mobile application performance testing (Android/iOS)
- Analyze performance results to identify bottlenecks across application, database, and infrastructure layers
- Collaborate with developers, architects, Dev Ops, and business teams to resolve performance issues
- Monitor system behavior using application and infrastructure monitoring tools
- Prepare performance test reports, metrics, and recommendations
- Integrate performance tests into CI/CD pipelines
- Support capacity planning and production readiness assessments
- Participate in Agile/Scrum ceremonies
Required Skills:
Performance Testing
- Strong hands-on experience with Neo Load
- Strong understanding of performance testing methodologies
- Experience in load modeling and workload design
- Experience in API performance testing (REST/SOAP)
- Hands-on experience with web UI performance testing
- Experience in mobile application performance testing
- Understanding of client-side and server-side performance metrics
- Experience with monitoring tools (APM, logs, metrics)
- Knowledge of HTTP protocols, JSON, XML
- Familiarity with CI/CD tools (Jenkins, Git Lab, etc.)
- Proficiency in Linux/Unix commands
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