Usman S.

QA Lead & AI Quality Engineer specializing in manual testing, API validation, automation, and RAG/LLM testing. I help startups and product teams increase release confidence, reduce production defects, and deliver reliable software across Web, Mobile, SaaS, and AI-powered applications. I’ve supported enterprise and customer-facing products across fintech, healthcare, insurance, e-commerce, retail, and oil & gas—working closely with developers, product owners, and stakeholders to identify risks early and ensure features are production-ready. What I can help you with Manual & End-to-End Testing - Functional, regression, smoke, integration, and UAT - End-to-end testing for web & mobile - Cross-browser and compatibility testing - API Testing (Validation + Automation) REST API testing using Postman - API validation, test coverage expansion, and structured reporting - QA Automation Selenium + Cypress - Test case automation strategy, stable frameworks, and maintainable suites - QA Planning & Execution Test planning, test strategy, and detailed test case design - Defect management with Jira, Zephyr, and Xray - Agile/Scrum QA processes - AI Testing & Quality Engineering (RAG/LLMs) - LLM application testing and evaluation - AI chatbot & conversational AI testing - Prompt validation, response accuracy, and edge-case coverage - Hallucination and risk-focused testing - AI workflow + API validation - Human-in-the-loop quality evaluation - AI-assisted test scenario generation (Claude, ChatGPT) If you need a hands-on QA Lead to set up or scale your testing process—or deep QA support for AI/RAG features—I can quickly integrate with your team and help you ship with confidence. Message me with your product type (Web/Mobile/SaaS/AI), timeline, and QA gaps—I'll suggest the best testing approach and deliverables.