I cut a UK fintech's regression cycle by 85% and scaled a SaaS test suite from 0 to 3,000+ automated cases at 98% daily pass rate. Senior SDET / QA Lead with 7+ years specializing in modern web automation (Playwright + TypeScript), data pipeline validation on Microsoft Fabric, and AI-augmented testing workflows. I work directly with founders, dev leads, and engineering teams to build automation right the first time — no outsourcing, no team handoffs. ISTQB Foundation Level Certified | GitHub: DTHieu95 | Live Allure dashboard with trend history (in portfolio). 🏆 Recent Wins - UK Fintech (data platform on Microsoft Fabric) — Built end-to-end data validation framework using Python + Pytest + Pandas, covering 4 data pipelines into 9 gold tables. Achieved 100% data accuracy validation between source and gold layers, catching schema drift before stakeholder dashboards. - UK SaaS (digital workflow platform) — Designed Playwright + TypeScript framework from scratch. Scaled to 3,000+ test cases at 98% daily pass rate. Cut full-suite execution from 14-15h → 10h via parallel execution and role-based authentication. Manual regression cycle: 1 week → 1-2 days. - UK Enterprise (legacy .NET 4 web app) — Replaced manual-only QA with Playwright automation. Reduced single-ticket regression from 1-2h manual → 15-20min automated (~85% reduction), including PDF invoice extraction and calculation validation. - APAC Tier-1 Telecom — Led QA team of 4. Selenium + Java + TestNG against a Siebel CRM-backed customer portal serving millions of subscribers. Defined test strategy and reported quality status directly to client stakeholders. - Open-source Playwright reference framework — fixture-injected POM, 6 projects (UI + API + accessibility with axe-core), 2-shard parallel CI on GitHub Actions, live Allure dashboard auto-published with trend history. Available in my Portfolio section. 🤖 What makes me different: AI-Native QA Workflow Most QA freelancers either fear AI or use it as a fancy autocomplete. I've built a structured AI workflow that goes past surface-level prompting: - Research-first authoring with Context7 MCP — pulls live library docs before any code change, keeping output aligned with current APIs (not stale training data). - MCP Playwright authoring — page snapshot + role-based locator discovery + self-verification in a controlled browser before commit. - Self-verification guardrail — every AI self-test must execute the actual committed code, never improvised alternatives — closing a subtle failure mode where AI 'passes' verification against drifted code. - AI-assisted CI failure triage — root-cause flaky tests from long Playwright trace logs in minutes, not hours. The result: faster delivery without the typical AI-generated tech debt. 🛠 Core Stack Test Automation: Playwright (TypeScript), Pytest, Page Object Model, Selenium WebDriver Data & Backend: Python, SQL, Pandas, Microsoft Fabric, REST API testing CI/CD: Azure Pipelines, Azure DevOps, GitHub Actions, Git AI Tooling: Claude Code, MCP integrations (Playwright + Context7) Languages: TypeScript, Python, Java, SQL 📩 Let's talk If you're building a SaaS, fintech, or data platform and need automation done right the first time — message me. I respond within a few hours during UK/EU business hours. Available 20-30 hrs/week, open to long-term engagements with serious teams.

🎁 No fees charged (full refund) if I fail to deliver on committed quality and time 🕒 13+ years of QA expertise ✅ 100+ products tested 🏆 100% Job Success ⏱ 750+ hours billed on Upwork Looking for a QA professional and specialist who understands the importance of a bug-free, high-quality system before it goes live? You’re in the right place. 👋 Highly motivated and versatile QA tester and years of QA experience. I deliver detailed reports, actionable insights, and 100% quality assurance. I will ensure your application is stable, user-friendly, and bug-free through expert QA testing from an end-user perspective, identifying real-world issues. Let’s discuss your project — I’ll make sure you get more value than expected. 💡 What I Offer ✔Web Applications, Web Sites, Mobile Apps(Android and iOS Apps), Hybrid Apps, Desktop Application Testing and Debugging ✔Functional Testing, Regression Testing, Smoke Testing , Integration Testing, and Usability Testing(User Testing/Customer experience testing), Manual QA ✔REST API Testing (Postman, Swagger, Rest Assured) ✔Automation Testing (Selenium WebDriver, Playwright, Cypress) ✔Performance Testing (JMeter) ✔Cross-Browser, cross-Device, and Responsive testing and checks ✔Test Case Design, Execution, and Reporting (JIRA, TestRail, Xray, Zephyr, Version One, BrowserStack) ✔Cloud services Testing (Azure, AWS) and SaaS products Testing ✔Database Testing ✔AI Powered websites Expert ⚙️ Why Clients Choose Me ☞Proven track record of delivering high-quality, bug-free applications ☞Strong Agile SCRUM & SDLC experience ☞Strong bug finding & problem-solving mindset, Excellent bug reporting and stakeholder communication ☞Flexible for independent or collaborative/team projects ☞100% client satisfaction and transparent working style ☞QA approach with Automation + Manual testing for complete test coverage ☞Reliable, detail-oriented, and focused on long-term client success 🧰 Tools & Technologies Support ☞QA Automation tools: Selenium, Playwright, Cypress, Rest Assured, Karate ☞REST API Testing: Postman, SoapUI, Swagger ☞Test Management: JIRA, ALM, TestLink, Bugzilla, GitLab ☞Performance: JMeter ☞Languages: Java, JavaScript, Python, VB Script ☞CI/CD: Jenkins, GitLab CI, CircleCI ☞Version Control: Git, GitHub, Bitbucket, SVN, TFS ☞Databases: MySQL, SQL Server, PostgreSQL, Cassandra, Hive, ADX ☞Frameworks: TestNG, JUnit, NUnit, Pytest, Cucumber, SpecFlow 📱 Devices Available for Testing iPhone (iOS) Android Mobiles Samsung Galaxy Tab Windows PC/Linux PC Simulators & Virtual Devices (for additional coverage) Let’s connect before you order and plan the perfect QA approach for your needs. Search keywords: Quality | Reliability | Transparency | Experience | Software QA Tester | Software QA | QA Tester | Manual Tester | QA Automation Tester | Manual QA Tester | Expert QA Tester | Automation QA | QA Engineer | QA Automation Engineer | QA Expert | QA AI Tester | Manual Testing specialist | QA Expert | Automation Testing Specialist | Mobile Apps Tester | Saas QA | Saas Tester |

General QA Engineer About: I'm a General QA Engineer with 6+ years of experience in web and mobile test automation, specializing in Playwright (TypeScript), Cypress, and Selenium WebDriver. I design reliable and scalable automation frameworks that ensure high-quality releases and faster delivery cycles. Tech stack: Languages: JavaScript, TypeScript Testing Frameworks: Playwright, Cypress, Selenium WebDriver, Mocha, Chai API Testing: Postman, Swagger, REST/GraphQL Test Management: TestRail, Qase Datab ases: SQL , NOSQL DevOps & Cloud: Docker, Kubernetes, AWS (S3), CI/CD (GitHub Actions, Jenkins, CircleCI) Other Tools: Git (Bitbucket, GitL ab, GitHub), HTML /CSS, Kafka

💼 Overview I help SaaS teams eliminate flaky tests and reduce regression time by up to 70–90% using Playwright + TypeScript. Recently, I have: • Reduced a 6-hour regression suite to under 1 hour • Stabilized CI pipelines by eliminating flaky tests • Built scalable E2E frameworks from scratch • Migrated large test suites from Cypress/Selenium to Playwright If your tests are slow, unstable, or blocking releases — I can fix that. 🚀 What I specialize in • Building fast, scalable Playwright frameworks (TypeScript) • Fixing flaky tests and stabilizing CI/CD pipelines • Reducing test execution time dramatically • Migrating from Cypress / Selenium → Playwright • Increasing coverage for critical user flows 🧠 How I bring value I don’t just write tests — I improve your release process. My focus is: • Faster deployments • Fewer production bugs • Reliable automation you can trust 🛠 Core stack • Playwright + TypeScript • API Testing (REST) • CI/CD (GitHub Actions, Jenkins) • Docker Additional: Selenium, Appium (for legacy support & migration) 👨‍💻 Experience • 10+ years in QA Automation • Worked with SaaS products and complex web applications • Strong background in both automation and system-level thinking 💬 When to reach out • Your tests are flaky or unreliable • Your regression suite is too slow • You want to switch to Playwright • You need a framework built from scratch • Your CI/CD pipeline is unstable 🎯 Let’s talk Send me a message with your current setup — I’ll quickly tell you how it can be improved.

• 8 years of experience in software testing. • Proficient in the software development life cycle including test strategy preparation, test plan development, test case creation, test execution and bug tracking. Analyzing software requirements specifications to create test plan and test cases for manual and automation testing. • Experienced in different types of testing black box testing, functional, GUI testing, integration, system, regression, IVR testing, exploratory testing, automation testing, mobile testing, smoke testing. • Test Case Creation. • Requirement and use cases analysis • Resolving problems and redirecting to the right person for fixing. • Defect Management • Process documentation creation. • QA reviews.

I help identify critical bugs, broken workflows, and data inconsistencies before they impact users. My focus is practical QA not just checking features, but validating real user flows, business logic, integrations, and overall product stability. I work with web and mobile applications, SaaS platforms, dashboards, ecommerce systems, AI-powered products, and data-driven applications. What you can expect from me ✔ Clear, structured bug reports with reproduction steps, expected vs actual results, screenshots, and impact assessment ✔ Manual testing: Functional, Regression, Smoke, Sanity, Exploratory, User Acceptance, and End-to-End testing ✔ Strong edge-case and negative scenario coverage based on real user behavior ✔ API testing with Postman, including request validation, response verification, error handling, and workflow testing ✔ UI, API, and database validation to ensure consistency across systems ✔ Automation support with Playwright, Cypress, and Selenium ✔ Cross-browser and cross-device testing (Desktop, iOS, Android) ✔ DevTools usage for Network, Console, and request inspection ✔ Test case creation, test execution, bug tracking, and release validation ✔ Clear communication with developers, project managers, and stakeholders How I test I approach products the way real users interact with them: repeated actions, interrupted workflows, invalid inputs, mobile responsiveness, permissions, account states, and unexpected behavior. In addition to standard test execution, I use exploratory testing to uncover hidden issues, inconsistent states, failed requests, usability problems, and workflow gaps that may not be covered by predefined test cases. Tools & Technologies • Postman • Playwright • Cypress • Selenium • Browser DevTools • REST APIs • JSON / XML • SQL (basic querying and validation) • GitHub Actions • Jenkins My goal My goal is simple: help teams release reliable, stable, and user-friendly products by providing thorough testing, actionable feedback, and high-quality bug reports. Available for both short-term projects and long-term collaboration.

Every successful product has one thing in common: users never see the bugs that were caught before launch. QA Engineer / QA Tester with 6+ years of experience in Manual and Automation Testing, helping businesses deliver reliable, user-friendly, and production-ready web and mobile applications by providing detailed bug reports, well-structured test cases, and real-world testing scenarios. I focus on identifying critical issues early, improving product stability, and ensuring a smooth user experience before release. ⚙️ QA Expertise ➜ Functional Testing ➜ Regression Testing ➜ UI/UX Testing ➜ Exploratory Testing ➜ Smoke & Sanity Testing ➜ End-to-End Testing ➜ Cross-Browser & Cross-Device Testing ➜ API Testing (Postman) ➜ Web & Mobile App Testing 🛠 Automation & Tools ➜ Playwright ➜ Cypress ➜ Selenium ➜ Postman ➜ JMeter ➜ BrowserStack ➜ Sauce Labs ➜ TestRail ➜ Zephyr ➜ Azure DevOps ➜ JIRA ➜ GitLab ➜ Jenkins 🏢 Industry Experience ➜ SaaS Platforms ➜ eCommerce Applications ➜ Healthcare Systems ➜ Logistics Platforms ➜ Education & eLearning Platforms ➜ AI & CX Platforms ➜ Enterprise Applications 🚀 Why Clients Hire Me ➜ Clear & Actionable Bug Reports ➜ Strong Attention to Detail ➜ Reliable QA Ownership ➜ Fast Communication ➜ Business-Focused QA Approach ➜ Stable & Reliable Release Support 👉 Click “Invite” to discuss your project requirements. 👉 Message me for a FREE QA test sample or application assessment. 🔑 Keywords: QA Tester, QA Engineer, Manual QA, Automation QA, Software Testing, Functional Testing, Regression Testing, API Testing, Web Testing, Mobile Testing, SaaS Testing, End-to-End Testing, UI/UX Testing, Cross Browser Testing, Bug Reporting, Playwright Testing, Selenium Testing, Cypress Testing, Postman API Testing, Performance Testing, Software QA, Smoke Testing, Sanity Testing, Integration Testing, System Testing, Acceptance Testing, Exploratory Testing, Test Case Design, Test Automation Framework, CI/CD Testing, Database Testing

You’re looking for someone who doesn’t just test features, but protects your product’s quality, reduces rework, and gives you confidence before every release. That’s where this QA partnership adds value. You get 8+ years of hands-on QA experience covering manual testing, automation, documentation, and quality process improvement — all focused on making your delivery smoother and more predictable. Instead of only finding bugs, the goal is to prevent regressions, clarify requirements early, and turn testing into a reliable system, not a last-minute checkpoint. How you benefit from working together Fewer production issues because high-risk flows are identified and tested early Faster releases through stable automated regression coverage Clear visibility with structured test cases, reports, and documentation Less back-and-forth thanks to precise bug reports and clear communication Stronger QA processes that scale as your product grows What gets delivered for you Manual QA: Thorough functional, regression, UAT, positive/negative, and edge-case testing focused on real user behavior Automation QA: Reliable and maintainable test suites using Cypress, Playwright, and Puppeteer to protect critical workflows Test documentation: Well-structured test cases, test plans, and reports that make quality transparent and repeatable Process improvement: QA workflows that catch issues earlier, reduce noise, and improve collaboration with developers CI/CD support: Testing integrated into Jenkins and CircleCI to support confident deployments How collaboration works You get a QA engineer who: Works comfortably with remote and distributed teams Communicates clearly and proactively Understands ticket workflows (bugs, stories, tasks) in tools like Jira and Trello Thinks beyond checklists and challenges assumptions before they become problems What you can expect Clear and responsive communication Strong attention to detail On-time, dependable delivery A long-term quality mindset, not short-term fixes If you want QA that makes your life easier, strengthens your product, and supports your team rather than slowing it down, this is a great fit. Let’s connect and discuss how your quality goals can be achieved efficiently and sustainably. — Junaid Zaka

I am an Automation Testing Expert with 7+ years of experience in Web, Mobile, and API testing. I help companies improve software quality by building robust automation frameworks and integrating automated testing into CI/CD pipelines. My goal is to reduce manual testing effort, detect bugs early, and accelerate software releases. I have worked on enterprise applications including banking platforms, fintech products, mobile applications, and safety management systems. What I Can Help You With • Web Automation Testing (Selenium, WebdriverIO) • Mobile Automation (Appium – Android & iOS) • API Automation (Pytest, Python, Postman) • End-to-End Test Automation Framework Development • CI/CD Pipeline Integration (Jenkins, GitHub Actions) • Smoke, Sanity, Regression & Functional Testing • Cross-Browser & Cross-Device Testing (BrowserStack) • Test Case Design & Test Planning Tech Stack Programming: Python, JavaScript (NodeJS) Automation: Playwright, Selenium, WebdriverIO, Appium API Testing: Pytest, Postman Frameworks: Page Object Model, BDD CI/CD: Jenkins, GitHub Actions, Azure DevOps Tools: Jira, TestRail Version Control: Git, GitHub, GitLab Database: MySQL Why Work With Me ✔ Strong experience in automation framework development ✔ Experience with Agile/Scrum environments ✔ Fast communication and reliable delivery ✔ Focused on high-quality testing and long-term collaboration If you are looking for an Automation Testing Expert to improve your testing process and product quality, feel free to invite me to your project.

AI & Agentic QA Engineer helping teams ship reliable, trustworthy software, from LLM validation and AI agent testing to full-stack manual and automation QA across Web, API, and Mobile. 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐐𝐀 𝐓𝐞𝐬𝐭𝐞𝐫 🏆4+ 𝗬𝗲𝗮𝗿𝘀 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗶𝗻 𝐌𝐚𝐧𝐮𝐚𝐥 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐐𝐀 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 🛡️ 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝 20+ 𝐐𝐀 (𝐖𝐞𝐛 & 𝐌𝐨𝐛𝐢𝐥𝐞) 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 on Upwork, 𝐚𝐥𝐥 𝐰𝐢𝐭𝐡 𝐠𝐫𝐞𝐚𝐭 𝐜𝐥𝐢𝐞𝐧𝐭 𝐟𝐞𝐞𝐝𝐛𝐚𝐜𝐤 I’m a 𝐐𝐀 𝐬𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐬𝐭 𝐰𝐢𝐭𝐡 𝐨𝐯𝐞𝐫 4+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 in software testing, automation, mobile app testing, and API testing. I bridge the gap between traditional QA engineering and the unique challenges of testing AI systems, validating LLM outputs, testing agentic workflows, evaluating prompt behavior, and ensuring your AI product behaves correctly in the real world. ⚙️ 𝗪𝗵𝗮𝘁 𝗜 𝘁𝗲𝘀𝘁 & 𝘃𝗮𝗹𝗶𝗱𝗮𝘁𝗲: → AI & LLM Applications — output quality, hallucination detection, prompt regression, edge case behavior → Agentic Systems — multi-step agent workflows, tool-use reliability, decision-path testing → REST & GraphQL APIs — functional, contract, and security testing via Postman & Newman → Web Applications — cross-browser, regression, E2E, and exploratory testing → Mobile Applications — iOS & Android functional, usability, and compatibility testing → Manual Testing — test planning, test case design, defect lifecycle management → Automation Testing — building scalable test frameworks using Selenium, Playwright, Cypress 🛠 𝗧𝗼𝗼𝗹𝘀 & 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: Playwright · Cypress · Postman · JIRA · TestRail · BrowserStack · LambdaTest · GitHub Actions · CI/CD pipelines · Python · JavaScript · Appium · Charles Proxy · n8n · Replit 🤖 𝗔𝗜-𝗦𝗽𝗲𝗰𝗶𝗳𝗶𝗰 𝗤𝗔 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: LLM output validation · Prompt regression testing · Hallucination & bias detection · Agentic workflow testing · RAG pipeline QA · Chatbot & NLP testing · AI behavior documentation 📋 𝗠𝘆 𝗽𝗿𝗼𝗰𝗲𝘀𝘀: I start by understanding your product, users, and risk areas. I design a QA strategy aligned with your release cycle, integrate into your Agile/Scrum workflow, and deliver clear, actionable defect reports. For AI products, I build custom evaluation frameworks that go beyond functional testing to assess reliability, consistency, and safety of model outputs. 📌 𝗧𝘆𝗽𝗲𝘀 𝗼𝗳 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗜 𝘄𝗼𝗿𝗸 𝗼𝗻: SaaS platforms · AI-powered products · LLM chatbots & assistants · Mobile apps · E-commerce · FinTech · HealthTech · EdTech · REST & GraphQL APIs If you're building an AI product and need a QA engineer who actually understands how LLMs and agents behave, not just someone checking UI bugs, let's talk. Message me with your project details and I'll respond within 24 hours.