App Tester Jobs in Washington (NOW HIRING)

Job Title: QA Performance Engineer Location: Vienna, VA Type: Contract Compensation: Work Model: Hybrid – onsite and remote Hours: 40.0

Responsibilities • Perform load, stress, endurance, and scalability testing to validate the production readiness of applications and infrastructure for stability and performance • Design, develop, and execute performance test scripts and scenarios that accurately simulate real-world user behavior • Build, maintain, and enhance automated performance testing solutions using tools such as NeoLoad or similar • Analyze performance test results to identify bottlenecks, system constraints, and optimization opportunities • Utilize monitoring and observability tools (AppInsights, Splunk, etc.) to assess system performance and troubleshoot issues • Partner with cross-functional teams to integrate performance testing early in the SDLC • Define performance SLAs and establish baseline metrics using production insights to ensure realistic and measurable performance goals • Identify, understand, and document system dependencies across services and applications for accurate test coverage and implement mocking strategies to stabilize testing environments • Support stabilization and management of performance testing environment, ensuring consistency, reliability, and scalability • Support QA leads and leadership in planning, prioritization, and execution of performance testing activities • Assist in coordinating performance testing efforts across multiple initiatives to ensure timely and high-quality delivery • Provide mentorship and technical guidance to junior team members, fostering a culture of knowledge sharing and continuous improvement • Review performance test scripts, test plans, and results to ensure alignment with standards and best practices • Collect, analyze, and communicate performance testing results to leadership and stakeholders, providing actionable insights and recommendations • Contribute to the development and continuous improvement of performance testing strategies, frameworks, and standards • Drive continuous improvement initiatives to enhance testing efficiency, coverage, and effectiveness • Analyze and optimize performance across distributed microservices architectures, containerized platforms, and cloud-native environments • Document, track, and report defects identified during testing in accordance with established defect management processes. Collaborate with cross-functional teams to resolve issues and communicate risks and trends to leadership • Perform other duties as assigned

Requirements • 4+ years of hands-on experience in software testing, with a strong emphasis on performance engineering, including planning, execution, analysis, and optimization of application performance and scalability • Experience defining performance baselines and SLAs using production or production-like environments • Experience with dependency mapping, service virtualization, and mocking frameworks (WireMock preferred) • Experience with monitoring and observability tools such as Azure App Insights, Splunk, or equivalent • Hands-on experience with Postman and performance testing tools such as NeoLoad or similar platforms • Proficiency with Azure DevOps or comparable test management tools for planning, executing, tracking, and reporting testing activities • Solid understanding of DevOps practices, CI/CD pipelines, and Agile methodologies • Strong analytical, troubleshooting, and problem-solving skills, with the ability to identify root causes, assess risks, and drive effective resolutions for complex technical issues • Strong communication and stakeholder management skills, with the ability to effectively communicate both verbally and in writing across different audiences and levels of leadership • Strong knowledge of performance testing methodologies, including load, stress, endurance, and scalability testing • Strong understanding of shift-left testing practices and early performance validation strategies • Strong understanding of SDLC, STLC, and quality engineering best practices • Hands-on experience with scripting and programming languages (e.g., Javascript) for developing and troubleshooting automated test solutions and frameworks • Experience with mocking tools (preferably WireMock) and performance scripting/monitoring tools

Nice To Have • Hands-on experience with mocking/mocking tools (preferably WireMock) • Knowledge of functional testing (SDET)

Comments 2026-07-08 01:38 PM - -: Please confirm if the candidate is legally authorized to work in the United States. Please confirm if the candidate will require employer sponsorship now or in the future.

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

#M2 #LI-EL1 Ref: #851-Rockville-S1