API/ UI/ Mobile App performance Tester

API/ UI/ Mobile App performance Tester (Contract) New York, NY, United States (On-site) Contract (4 months) Published 3 days ago Jenkins/GitLab performance testing tools DevOps & CI/CD api testing cross - functional collaboration NeoLoad We are looking for a skilled Performance Test Engineer with hands‑on experience in NeoLoad 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 NeoLoad. Perform API performance testing (REST/SOAP). Conduct UI performance testing for web applications. Execute mobile application performance testing (Android, iOS). Analyze performance test results to identify bottlenecks in application, database or infrastructure layers. Work closely with developers, architects, DevOps 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 with CICD pipelines. Support capacity planning and production readiness assessments. Required Skills Strong hands‑on experience with NeoLoad. Good 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 testing mobile application performance. Understanding of client‑side and server‑side performance metrics. Monitoring Tools Experience with monitoring tools (APM, logs, metrics). Knowledge of protocols, JSON, XML. Familiarity with CI/CD tools (Jenkins, GitLab, etc.). Proficiency in Linux/Unix commands. The pay range that the employer in good faith reasonably expects to pay for this position is $33.00/hour - $51.56/hour. Our benefits include medical, dental, vision and retirement benefits. Applications will be accepted on an ongoing basis. Tundra Technical Solutions is among North America’s leading providers of Staffing and Consulting Services. Our success and our clients’ success are built on a foundation of service excellence. We are an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic. Qualified applicants with arrest or conviction records will be considered for employment in accordance with applicable law, including the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. Unincorporated LA County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: client provided property, including hardware (both of which may include data) entrusted to you from theft, loss or damage; return all portable client computer hardware in your possession (including the data contained therein) upon completion of the assignment, and maintain the confidentiality of client proprietary, confidential, or non-public information. In addition, job duties require access to secure and protected client information technology systems and related data security obligations. #J-18808-Ljbffr Capgemini