Vikas S.

Senior QA Engineer | SaaS | ERP | FinTech | Healthcare | AI & API

I help startups, SaaS companies, ERP vendors, FinTech businesses, Healthcare platforms, and AI product teams release stable, secure, and production-ready software. As an ISTQB Certified Senior QA Engineer with 30,000+ hours of testing experience on Upwork, I specialize in Manual Testing, SaaS Testing, ERP Testing, FinTech Testing, Healthcare Testing, AI Testing, API Testing and Enterprise Application Testing across Web, Mobile, and API-based products. I help software teams identify critical defects, validate business workflows, improve user experience, and reduce production issues before customers ever see them. Whether you need to validate an AI workflow, test a SaaS platform, verify ERP business processes, test FinTech payment flows, review Healthcare applications, check mobile designs on BrowserStack, or manage defects in Jira, I can handle the complete QA process from planning to release. ⚡ SERVICES & EXPERTISE • Functional Testing • Regression Testing • Smoke Testing • Sanity Testing • Exploratory Testing • UI/UX Testing • Usability Testing • Compatibility Testing • Cross-Browser Testing • Cross-Platform Testing • End-to-End Testing • User Acceptance Testing (UAT) SaaS Testing • Subscription workflows • Multi-tenant applications • User onboarding flows • Role-based access control • Dashboard and reporting validation • SaaS billing and subscription testing ERP Testing • Business workflow validation • Inventory and order management testing • Reporting and approval workflows • Multi-role access validation • ERP module integration testing FinTech Testing • Payment workflows • Wallet systems • Transaction validation • Subscription billing • Invoice and reporting workflows Healthcare Testing • Appointment systems • Patient workflows • Role-based access validation • Healthcare mobile applications AI & LLM Testing • AI feature validation • AI chatbot testing • Prompt-response validation • LLM workflow testing using ChatGPT, Gemini, Claude and other AI tools • AI output consistency and reliability testing E-commerce Testing • Product Catalog Validation • Product Search and Filters Testing • Shopping Cart Testing • Checkout Workflow Testing • Payment Gateway Testing • Coupon and Discount Validation • Order Management Testing • Invoice and Tax Validation • Shipping and Delivery Workflow Testing • User Account and Wishlist Testing • Multi-device and Cross-browser Testing • API Validation for E-commerce Integrations Accessibility Testing (WCAG Compliance) • Accessibility Testing for Web and Mobile Applications • WCAG 2.1 and WCAG 2.2 Guidelines Validation • Keyboard Navigation Testing • Screen Reader Compatibility Testing • Color Contrast Validation • Focus Order and Focus Visibility Testing • Alternative Text (Alt Text) Verification Platforms • Web Application Testing • Mobile Application Testing (iOS & Android) • Cross-browser and cross-platform testing • BrowserStack testing across multiple devices and browsers Tools • Jira • Confluence • Trello • Asana • BrowserStack • Postman • Accessibility testing using browser developer tools and industry best practices I can work independently as your QA Lead to establish testing processes and release quality standards, or integrate seamlessly with your existing development team. If you're building a SaaS product, ERP solution, FinTech platform, Healthcare application, CRM system, AI product, or Enterprise application, I can help you launch with confidence. I can help ensure your software is not only bug-free but also accessible and compliant with modern accessibility standards and WCAG guidelines. What It's Like to Work With Me- I don’t just look at a passive checklist; I think like your end-user and act as a quality gatekeeper. When you work with me, you can expect an organised, communicative partner who integrates smoothly into your development cycles. Every bug I report is highly detailed and actionable. Your development team will receive crystal-clear tickets in Jira featuring exact step-by-step instructions to reproduce the issue, backend API logs where applicable, annotated screenshots, and clear video recordings so they can deploy a fix instantly. Whether you need a dedicated professional to audit a massive enterprise ERP rollout, manually test complex backend APIs, secure a new FinTech engine, perform a rigorous sweep of a compliance-driven Healthcare tool, or meticulously test an advanced AI-powered SaaS platform—I am ready to help. Let’s connect to discuss your project and get your application production-ready!