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Senior QA Engineer and QA Consultant for hire — helping startups and enterprises ship reliable web, mobile, SaaS, eCommerce, and AI products. I provide software testing, quality assurance, manual QA, Playwright automation, API testing, and mobile app testing (iOS & Android) for worldwide clients. I’m MD Masfiqur Rahman, a Top Rated Plus Senior Software Quality Assurance Engineer with 14+ years of experience, $200K+ earned on Upwork, 100% Job Success, and 11K+ hours delivered. What I do as your QA engineer / software tester: • Manual QA & exploratory testing — functional, regression, UAT, edge cases • Playwright automation — stable end-to-end test coverage • API testing & SQL validation — backend and data integrity checks • Mobile app QA — iOS and Android (native & hybrid) • AI QA — prompt validation, model output checks, product reliability • Release readiness — bug reports clients can act on, documentation, go-live confidence Who I work with: Product teams and founders who need a reliable QA consultant or QA engineer for hire — not just bug lists, but clear risk signals before release. Clients across the USA, UK, Australia, Netherlands, Brazil, and worldwide. Why hire me: • Top Rated Plus · 100% Job Success • Clear communication and timezone-friendly remote delivery • Detailed, reproducible bug reports with severity and impact • Experience with Tesco, Harrods, Marks & Spencer–related projects and many SaaS / startup products Looking for a QA engineer, software tester, QA consultant, quality assurance engineer, or automation tester? Invite me — or message with your stack, timeline, and release goals.

I am a detail-oriented Senior Quality Assurance Engineer with 5+ years of experience working with many software including mobile apps(iOS & Android), web apps, desktop apps, CRM, SAAS etc. Benefits of working with me: =========================== • 24/7 available for response • Excellent communication skills • Best quality work with minimum budget My specialties include: • Mobile/Web Application Testing • Manual testing, Game Testing • Detailed Test Plan & Test Case Development • User Acceptance, Functional Testing • Regression, UI/UX, Cross-Browser Testing • Smoke, Sanity, Exploratory, Monkey Testing • Usability Testing, Device Compatibility, Available Physical Testing Devices =========================== Android Phones: Samsung S24 Ultra, Samsung S21 plus, Samsung A52s, Samsung A12, Google Pixel 7a, Google Pixel 6, VIVO IQOO neo 10, Motorola Moto G45, Redmi Note 7, Realme c15 iOS Phones: iPhone 16 Pro, iPhone 15 Pro Max, iPhone 15, iPhone 14, iPhone 13, iPhone 11 Pro Max, iPhone XR, iPhone X. iOS Tablets: iPad Air 5, iPad Air 4. Windows Devices: Windows 11 Laptop (ASUS ROG Strix, AMD Ryzen 7 with Nvidia RTX 3050), Windows Desktop: (Intel core i5 14600k 32gb ram GPU - Nvidia RTX 3060) MacBook Devices: MacBook Air M3 Project Management and Defect Tracking Tools ================================== Jira, Trello, Bugzilla, Asana, Notion, ClickUp, GitLab, GitHub, Google Spreadsheet, Excel **Please feel free to reach me out any time for any information. I would be happy to co-operate. Thank you**

🔐 RELEASE GATEKEEPER: Launch products confidently - no last-minute surprises. Senior QA Specialist & QA Engineer with 14+ years of experience in web application testing, mobile app testing, SaaS QA, and React Native application testing across iOS, Android, and desktop platforms. Specialized in functional testing, regression testing, release QA, Cypress/Playwright automation, API testing, usability testing, cross-browser testing, and real-device validation. I help startups and growing teams deliver stable, well-tested web and mobile applications through hands-on QA testing, exploratory testing, end-to-end workflow validation, and full QA ownership from test planning to post-release sign-off. Experienced as: SaaS QA Engineer · CRM Application Tester · React Native Tester · Automation QA Tester · Cypress QA Engineer · Manual QA Tester · Mobile App Tester · Web Application Tester · Software Tester 🤝 𝗪𝗛𝗬 𝗛𝗜𝗥𝗘 𝗠𝗘 - Clear, timely communication and full QA accountability - Business-focused defect detection, not just surface-level bugs - Stable releases across platforms, devices, and environments - Delivery of comprehensive QA documentation: Test plan, Test Cases, Bug Reports, Sign-off docs, Rulebooks, Traceability matrices, and more - Full ownership from test strategy through release sign-off 🌍 𝗗𝗼𝗺𝗮𝗶𝗻 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: SaaS | E-commerce | Booking Systems | Fintech | Healthcare | Shopify | AI | Crypto | Web3 | Crowdfunding | EdTech | Social Platforms | CRM 🧪 𝗠𝗮𝗻𝘂𝗮𝗹 𝗤𝗔 𝗦𝗸𝗶𝗹𝗹𝘀: - Functional Testing - Regression Testing - Mobile App Testing - Web Application Testing - API Testing - UI/UX Testing - Exploratory Testing - Cross-browser & Cross-device Testing - UAT & Sprint QA Support 𝐀𝐈-𝐚𝐬𝐬𝐢𝐬𝐭𝐞𝐝 𝐐𝐀 & 𝐀𝐠𝐞𝐧𝐭𝐢𝐜 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 AI tools I use in my daily QA workflow: 𝐏𝐥𝐚𝐲𝐰𝐫𝐢𝐠𝐡𝐭 𝐌𝐂𝐏 → Generate and extend Playwright tests, execute AI-assisted browser workflows, and support end-to-end automation using existing project structure. 𝐂𝐡𝐚𝐭𝐆𝐏𝐓 → Regression test case generation, edge-case brainstorming, bug report refinement, API scenario generation, and documentation. 𝐂𝐥𝐚𝐮𝐝𝐞 / 𝐂𝐥𝐚𝐮𝐝𝐞 𝐂𝐨𝐝𝐞 → Analyze Jira specifications, summarize logs, generate exploratory testing ideas, investigate bugs, and assist with Playwright automation. 𝐂𝐮𝐫𝐬𝐨𝐫 → AI-assisted debugging, selector review, frontend flow analysis, and Playwright/Cypress scripting support. 𝐧𝟖𝐧 → Automate Jira ↔ TestRail test case generation and QA workflows. 𝐋𝐨𝐨𝐦 𝐀𝐈→ Generate narrated issue summaries and video explanations. 𝐀𝐠𝐞𝐧𝐭𝐢𝐜 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 (𝐏𝐥𝐚𝐲𝐰𝐫𝐢𝐠𝐡𝐭 𝐌𝐂𝐏) → Perform AI-assisted UI testing, browser automation, workflow validation, bug reproduction, exploratory testing, and test case execution while manually verifying all results. ⚙️𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 & 𝗤𝗔 𝗣𝗿𝗼𝗰𝗲𝘀𝘀: - Cypress, Playwright – automation feasibility studies, stable flow coverage, and scalable test setups - Regression automation for repetitive, high-value test cases - QA workflow design in Agile teams – including Test Planning, Bug triage, and QA sign-off 📱 𝗥𝗲𝗮𝗹-𝗗𝗲𝘃𝗶𝗰𝗲 𝗜𝗻𝘃𝗲𝗻𝘁𝗼𝗿𝘆: iPhone-17 pro max, iPhone 16 Pro Max, 15, 14, 11 Pro, X | iPad Air, Pixel 6/7, Galaxy S25 Ultra, Galaxy S24 Ultra, Moto Edge, Apple Watch Series 8 Apple M3 MAX(ARM64) , Apple macOS x64 (Intel) and windows machine. 𝗖𝗹𝗼𝘂𝗱/𝗧𝗼𝗼𝗹𝘀: BrowserStack, Android Studio, Xcode 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀 𝗧𝗲𝘀𝘁𝗲𝗱: Mobile apps built with React Native & Flutter, and web applications built on any modern framework (e.g., PHP, Java, Python, JavaScript) 🛠️ 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗦𝗸𝗶𝗹𝗹𝘀 𝗧𝗵𝗮𝘁 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 𝗠𝘆 𝗤𝗔 𝗪𝗼𝗿𝗸 Confident working alongside developers and setting up local environments. 𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲𝘀 & 𝗧𝗼𝗼𝗹𝘀: Python, JavaScript, Node.js, Java, Shell, Git, Docker, npm, yarn 𝗖𝗜/𝗦𝗲𝘁𝘂𝗽: Gradle, Brew, Dev Containers, Ansible, Expo Go 🧰 𝗤𝗔 𝗦𝘁𝗮𝗰𝗸 & 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻 𝗧𝗼𝗼𝗹𝘀: JIRA, TestRail, Postman, Cypress, Playwright, GitHub, Bitbucket, JMeter, Newman, Slack, Notion, Trello, Confluence 📩 Let’s ensure your next release is smooth, stable, and customer-ready. I'm ready when you are.

Save time and money by hiring me (Top-Rated 🎖️) or my expert QA team! I hold a BSc in CSE and work as a Full-Stack QA Engineer, specializing in both manual and automation testing. Also, Head of QA at C4U Tech, a software development and QA company focused on delivering high-quality, reliable solutions. 𝐖𝐡𝐚𝐭 𝐲𝐨𝐮 𝐰𝐢𝐥𝐥 𝐠𝐞𝐭 𝐟𝐫𝐨𝐦 𝐦𝐞: ✅ Full Acceptance Testing of websites or mobile apps (iOS & Android). 🐞 Comprehensive bug tickets with clear steps and details. 📑 Detailed test documentation (test plans, test cases, bug report, quality reports) 🎨 Thorough manual testing of functional and GUI aspects of the application 👨‍💻 Ability to lead and manage a QA team for larger projects 🚀 Successful Closed Testing for Android apps, ensuring smooth Play Store publishing 🌟𝐒𝐤𝐢𝐥𝐥𝐬 - Functional & GUI Testing: Proficient in Smoke, MAT, and Full AT (Acceptance Testing). -API Testing: With tools like Postman for thorough API testing and documentation. -Test Automation: Skilled in using PyCharm and Selenium WebDriver to automate test cases. -Test Documentation: Creating comprehensive test plans, test cases, and bug reports. -Quality Reports: Quality reports with test result analysis and visual presentation. 📚𝐓𝐫𝐚𝐢𝐧𝐢𝐧𝐠 𝐚𝐧𝐝 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠 (𝐓𝐨𝐩 𝟓 𝐜𝐞𝐫𝐭𝐢𝐟𝐢𝐜𝐚𝐭𝐞𝐬): 1. QA Functional Testing Training- A1QA. 2. Information Security Awareness - Fortinet. 3. Software Testing Fundamentals - LinkedIn. 4. SQL Programming for data querying - LinkedIn. 5. Career essential skills in Software Development - Microsoft. 👨‍💻𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 & 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐒𝐚𝐦𝐩𝐥𝐞 (𝐆𝐢𝐭 & 𝐏𝐨𝐫𝐭𝐟𝐨𝐥𝐢𝐨 𝐒𝐞𝐜𝐭𝐢𝐨𝐧): Planned and executed tests across Mobile, Web, and Desktop applications. Managed manual test cases and the entire testing process. Ensured application correctness through rigorous API testing. Created detailed test documentation, including test plans and bug reports. Collaborated within a team environment to deliver high-quality software projects. 🚀𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: I specialize in testing across various platforms: Mobile: Functionality on iOS and Android devices. Web: Rigorous testing of web applications. Desktop: Verifying the desktop software meets the requirements. 🔒𝐈𝐧𝐟𝐨𝐫𝐦𝐚𝐭𝐢𝐨𝐧 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 (𝐀 𝐌𝐮𝐬𝐭): I’m well-versed in information security practices, with certification. 📝𝐓𝐨𝐨𝐥𝐬 & 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬: DevTools, Logcat, Charles Proxy, Jira, Fiddler, JMeter PyCharm, Selenium, Postman, SQL, JQL Linux, Web Services, Cloud, Network & Virtual Machines (VM) 📊𝐀𝐝𝐝𝐢𝐭𝐢𝐨𝐧𝐚𝐥 𝐒𝐤𝐢𝐥𝐥𝐬: Microsoft Office Suite (Word, Excel, PowerPoint) Quality Report Generation Test Documentation Familiarity with Agile methodologies TestRail for test management Understanding of Software Testing Life Cycle (STLC)

ISTQB Certified Tester Foundation Level | Certified Scrum Product Owner | Certified ScrumMaster | AI QA / SQA Lead - Extensive onsite and remote experience across multiple product development cycles for United States / UK / India based companies, establishing full-spectrum scripted / exploratory and AI-augmented QA testing frameworks & planning for SaaS, CRM, ERP, LLM-powered and Generative AI products across all browsers on Windows, MacOS and Ubuntu machines. Expertise in AI-assisted test case generation, functionality testing, non-deterministic LLM / AI agent evaluation, regression and production test planning, requirement analysis, backlog maintenance, bug management, exploratory testing, technical documentation and overall software project management in Agile process. - Highly skilled in writing automation scripts and self-healing test suites using Selenium / TestCafe / Playwright / Cypress with Python / Java / Javascript, plus visual AI regression and semantic validation. (Github Profile: github(dot)com/qaconsul). - Experienced in API and RAG pipeline testing using Postman, Kreya, SoapUI and Swagger. - Excellent communication and interpersonal skills to collaborate effectively. - Commanding control over Unit Testing, Integration Testing, System Testing, Sanity Testing, Regression Testing and adversarial / prompt-injection guardrail testing. - Experienced in using Azure DevOps, JIRA, Maven, Jenkins, JUnit, Splunk, Bugzilla, Evernote, Asana, Scrum, Hudson, SharePoint, SVN, Git, Github, PyTorch, Keras, Tensorflow.

Working corporate and highly professional environment has made a strong person who is ever ready to face challenges, highly motivated and capable of taking multiple tasks simultaneously. I have disciplined, professional and quality centered approach with strong analytical and problem solving skills and ability to work under pressure in a dynamic cross-functional, cross-borders and cross-cultural environment. I am always maintain a good time management. I always submit my work before the deadline. Diligence and hard work is my one of the most strongest part. I am an experienced software quality assurance engineer. I have vast knowledge about software testing. I do both manual and automation software testing. I use playwright with JavaScript to do UI and API automation. Also work with postman for api testing. Work with JIRA, QASE, TestRail for document management and bug management.