👨‍💻 About Me: I’m a Senior Software QA Engineer with 8+ years in the IT industry, specializing in both manual and automation testing. I've worked with clients in finance, healthcare, education, and e-commerce, making sure their systems launch flawlessly across web, desktop, and mobile (iOS & Android) platforms. My background includes: QA strategy and execution (Agile & Waterfall) Manual, Automation, AI Automation Test plans, test case design, BDD, regression testing API testing (Postman, SoapUI), UI Automation (Selenium, Katalon) RPA development (Joget, UIPath) Tools: Azure DevOps, Trello, Asana, Visual Studio, Celoxis Beyond QA, I’ve also worn multiple hats: IT Helpdesk Specialist: Solving real-time issues via chat, calls, and remote support Business Analyst: Translating business needs into actionable dev requirements Project Consultant: Deploying IT solutions in healthcare environments Virtual Assistant: Managing WordPress/Shopify, content uploads, photo/video editing, and data entry 🔧 Key Services Offered 🧪 Software Testing (Manual & Automation) 🧠 Business Process Analysis & Documentation 📈 IT Helpdesk & Remote Support 🛒 WordPress & Shopify Management 🎨 Graphic Design (Photoshop, Premiere, Canva) 🧾 Data Entry (Real Estate, eCommerce, etc.) 🔎 Product Sourcing / VA Tasks

Top 3% Talent on Upwork | 9+ Years of QA Experience | QA Engineer for ChicMic Studios Detail-oriented Senior Quality Assurance Engineer with over 9 years of experience in delivering bug-free, high-performance software across mobile apps, web platforms, APIs, and games. Currently working with ChicMic Studios, a global leader in software and game development, where I ensure every release meets the highest standards of quality, performance, and user experience. I bring a comprehensive QA approach—combining manual testing, test automation, and AI-driven testing techniques to improve test coverage, accelerate delivery, and minimize production risks. I've helped clients from startups to enterprise platforms launch robust, stable, and scalable applications. ⚙️ Core QA Skills & Capabilities ✅ Test Strategy, Execution & Governance * 9+ years of experience in Test Strategy, Test Planning, and Test Data Management * Strong expertise in Functional, Exploratory, Regression, and UAT Testing * Focus on aligning QA efforts with business requirements for customer-ready releases ✅ Automation Testing, Mobile QA & AI-Powered QA * Automation Tools: Selenium WebDriver, Appium (iOS/Android), TestNG, JUnit. * Mobile Test Automation: Native, hybrid, and web app testing using Appium for both iOS and Android. * Skilled in building scalable test frameworks using POM, data-driven testing, and Java. * API Testing & Automation with Postman, Swagger, scripting advanced workflows. * Real-device testing and automation across various devices and OS versions using emulators/simulators. Predictive testing and test prioritization using AI analytics. ✅ Performance & Continuous Testing * Shift-left testing via CI/CD integration using Jenkins and Git. * Real-time test reporting using Allure, Extent Reports, and custom dashboards. ✅ Cross-Platform, Responsive & Game Testing * Extensive experience in Mobile (iOS/Android), Web, CMS, and Game Testing. * Expertise in Responsive Testing, Cross-browser Testing, and UX/UI validation. * Device validation via BrowserStack, Firebase Test Lab, and web debugging tools (DevTools, Firebug). 🧰 Tools & Tech Stack * Automation & Frameworks: Selenium, Appium, TestNG, TestNg, BDD framework * API Testing: Postman, Swagger * Reporting: Allure, Extent Reports * CI/CD & Infrastructure: Jenkins, Git, Docker * Test Management: TestLink, Zephyr * Collaboration & Bug Tracking: JIRA, Trello, Mantis, GitHub, Slack * Cloud Testing Platforms: BrowserStack, Firebase Test Lab * AI Testing Tools (Familiar): Testim, Mabl, TestSigma 🏢 Domain Expertise * Fitness & Wellness – QA for fitness tracking apps, workout planning, nutrition logging, and real-time health data sync. * Gaming & Entertainment – QA for real-time multiplayer games, monetization systems, and UI stability. * E-commerce & Retail – Checkout flows, payment gateways, and cross-platform shopping experience. * Legal & Compliance – Regulatory systems with document handling and access controls. EdTech & Learning Platforms – User experience validation, role-based testing, and interactive modules. * Social & Communication Apps – Voice logging, messaging, media uploads, and real-time sync. 📂 Completed Automation Projects * Mini Heart – Web automation project focusing on responsive UI and regression suites * Tria – Mobile automation using Appium for iOS and Android * Athleta Media – Web automation with Selenium and integration in CI/CD pipelines 🏆 Achievements & Impact * 🔍 Reduced critical defect leakage by over 10% through advanced automation and early defect detection. * 🚀 Delivered multiple on-time, high-quality releases across web, mobile, and gaming platforms. * 📉 Maintained zero production downtime via robust regression and smoke testing processes. * 🤝 Collaborated closely with developers, designers, and product managers to ensure QA across SDLC. * 💡 Raising the Bar for Product Quality I bring precision in manual testing, hands-on proficiency with automation frameworks, and a forward-thinking approach to AI-driven quality assurance—delivering software that’s reliable, scalable, and built for exceptional user experience.

A programmer with background in TypeScript, Python, Java. I have experience in web automation using different tools – Selenium, Puppeteer, Playwright. I’ve been leveraging these tools for test automation, done number of data scraping projects, including IP rotation, scheduling, deploying in cloud. I implemented test suites for web and API testing. I like to automate things and do data analysis, using both big platforms and ad-hoc solutions.

𝐈 𝐞𝐦𝐩𝐨𝐰𝐞𝐫 𝐭𝐞𝐚𝐦𝐬 𝐭𝐨 𝐬𝐡𝐢𝐩 𝐟𝐚𝐬𝐭𝐞𝐫 𝐭𝐡𝐫𝐨𝐮𝐠𝐡 𝐩𝐫𝐨𝐯𝐞𝐧 𝐀𝐈-𝐀𝐮𝐠𝐦𝐞𝐧𝐭𝐞𝐝 𝐐𝐀 & 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐲𝐨𝐮 𝐜𝐚𝐧 𝐭𝐫𝐮𝐬𝐭. 𝐓𝐨𝐨𝐥𝐬: Playwright | Selenium | Cypress | Appium | NightwatchJS | ACCELQ | Mabl | Testim 𝐖𝐨𝐫𝐤𝐅𝐥𝐨𝐰: BrowserStack | GitHub Actions | Jenkins | GitLab | Dockers | CI/CD | Framework design 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬: AWS | ISTQB-CTFL | CSM | CSPO 🧪𝐌𝐚𝐧𝐮𝐚𝐥 𝐐𝐀: Requirment Analysis | Test Cases Design | Test Execution | Cross-Browser Testing | Bug-Reporting / Follow-up 🤖 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐞𝐝 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 𝐓𝐨𝐨𝐥𝐬: Playwright | Selenium | Cypress | Appium | NightwatchJS | Ranorex | JMeter | k6 🧰 𝐎𝐭𝐡𝐞𝐫 𝐓𝐨𝐨𝐥𝐬 & 𝐃𝐞𝐯𝐎𝐩𝐬: TestRail | TestMo | XRay | JIRA | BugZilla | Jenkins | TeamCity | GitHub Actions 🏅𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬: - 𝐈𝐒𝐓𝐐𝐁-𝐂𝐓𝐅𝐋 - 𝐀𝐖𝐒 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 𝐂𝐥𝐨𝐮𝐝 𝐏𝐫𝐚𝐜𝐭𝐢𝐭𝐢𝐨𝐧𝐞𝐫 - 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 𝐒𝐜𝐫𝐮𝐦 𝐌𝐚𝐬𝐭𝐞𝐫 - 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 𝐒𝐜𝐫𝐮𝐦 𝐏𝐫𝐨𝐝𝐮𝐜𝐭 𝐎𝐰𝐧𝐞𝐫 🚀 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: - 𝐓𝐞𝐬𝐭 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: Build robust, scalable testing architectures using Modern tools - 𝐂𝐨𝐦𝐩𝐥𝐞𝐱 𝐏𝐫𝐨𝐜𝐞𝐬𝐬 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧: Streamline intricate testing workflows with all possible integrations - 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐀𝐬𝐬𝐮𝐫𝐚𝐧𝐜𝐞 𝐋𝐞𝐚𝐝𝐞𝐫𝐬𝐡𝐢𝐩: Ensure exceptional user experiences across all platforms 🎯 𝐖𝐡𝐚𝐭 𝐈 𝐎𝐟𝐟𝐞𝐫: - 𝐅𝐮𝐥𝐥-𝐂𝐲𝐜𝐥𝐞 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐀𝐬𝐬𝐮𝐫𝐚𝐧𝐜𝐞 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬: Complete E2E QA coverage from planning to post-release. - 𝐂𝐮𝐬𝐭𝐨𝐦𝐢𝐳𝐞𝐝 𝐓𝐞𝐬𝐭 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: Tailored automation frameworks for your tools and workflows - 𝐂𝐨𝐦𝐩𝐫𝐞𝐡𝐞𝐧𝐬𝐢𝐯𝐞 𝐀𝐏𝐈 𝐚𝐧𝐝 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐓𝐞𝐬𝐭𝐢𝐧𝐠: Thorough validation of APIs, logic, and data integration. - 𝐂𝐈/𝐂𝐃 𝐖𝐨𝐫𝐤𝐟𝐥𝐨𝐰 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧: Embed QA in CI/CD for faster, safer releases. - 𝐂𝐫𝐨𝐬𝐬-𝐅𝐮𝐧𝐜𝐭𝐢𝐨𝐧𝐚𝐥 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐨𝐧: Work closely with teams to ensure continuous quality. If you are looking for a QA expert who delivers high-quality, scalable testing solutions that boost development efficiency and ensure product reliability, let’s connect! I look forward to collaborating. 𝐒𝐚𝐫𝐟𝐫𝐚𝐳 𝐇𝐮𝐬𝐬𝐚𝐢𝐧

I’m a QA Automation Engineer with 7+ years of experience helping startups and SaaS companies deliver bug-free, scalable, and reliable software. My core strength lies in building Playwright + TypeScript test frameworks from scratch, integrating them into CI/CD pipelines (GitHub Actions, Azure DevOps, GitLab CI), and maintaining robust automated suites across web, mobile, and APIs. My SME - Automation Expertise: Playwright (UI/API/E2E), Cypress, Selenium, Appium. - CI/CD & DevOps: GitHub Actions, Jenkins, Azure DevOps for automated test pipelines. - API & Data Testing: Postman, REST Assured, SQL queries, pipelines validation. - Cloud & SaaS Testing: Hands-on experience with AWS, Azure, and multi-tenant SaaS apps. - Manual + Exploratory QA: GUI, regression, cross-browser/device, performance, and security testing. - Collaboration: Proactive in working with developers, PMs, and designers to implement shift-left QA practices. I’ve tested products in healthcare, fintech, edtech, AI-driven SaaS, and data-heavy platforms, ensuring high reliability under fast-paced releases. I also mentor teams on test hygiene, automation best practices, and QA ownership.

I don't just find bugs, I build systems that prevent them from reaching your users. With 8+ years across E-commerce, FinTech, and SaaS platforms, I've helped 40+ clients ship faster, with fewer defects, and more confidence. My edge? I combine deep QA expertise with modern AI & automation tooling — so your test coverage scales with your product. —————————————————————— WHAT I BRING TO YOUR PROJECT —————————————————————— Test Automation Frameworks → Selenium WebDriver + TestNG + Cucumber (BDD) + Page Object Model → Playwright for modern web apps Mobile Testing → Appium for Android & iOS (Native + Hybrid + React Native) API Testing → Postman, REST-Assured — functional, security & performance validation AI-Powered QA & Automation → n8n workflows for automated test reporting & defect triage → AI-assisted test case generation & coverage analysis CI/CD Integration → Jenkins, GitHub Actions — continuous test execution in your pipeline Clear Communication → Actionable bug reports your devs can fix immediately → Daily updates, no ghosting, IST timezone (flexible hours) —————————————————————— INDUSTRIES I'VE DELIVERED FOR —————————————————————— E-Commerce — Full regression + smoke suites, cart & payment flow testing FinTech — High-accuracy functional, security & compliance validation SaaS — Fast release cycles with solid automation coverage Mobile Apps — End-to-end iOS & Android testing (Appium + manual exploratory) —————————————————————— BY THE NUMBERS —————————————————————— 5.0 Rating |100% Job Success | Top Rated 48+ Projects Completed | 3,800+ Hours on Upwork Long-term client relationships across 3 continents I treat your product like my own. If you need a QA engineer who shows up, communicates clearly, and genuinely cares about quality — let's talk.

Senior engineer, 10+ years, ex-Google, top 1% on Upwork. I'm Peter. I own the testing process end to end, the part that keeps products from breaking in front of real users. I also develop production software full-stack, so I can build what you need, not just test it. What I build: - QA: test strategy, Playwright, Selenium, Cypress, Postman, web, API and mobile testing, CI/CD gates, flake reduction - Software: full-stack products, Supabase, clean integrations, AI features where they actually earn their place - Automation: workflow automation with n8n and Make to take repetitive work off your team What that has looked like: - Trusted by Braze, Nestlé and 40+ SaaS companies shipping on tight, frequent release cycles - Playwright suites running in CI that gate every release - An ISTQB-certified team behind me, all held to one quality bar - Products live in production, like a recruiting agent that screens candidates end to end and a flight search bot running on WhatsApp and Telegram Who I work with: startups and mid-sized teams across SaaS, fintech, telecom, medtech, accounting and hospitality. I know where these products break. Payment edge cases, permission boundaries, flaky releases, silent data bugs. I test and build to keep them out of production. You deal with me directly, every time. When scope grows I bring in a small senior team I trust, held to the same bar. Tech-agnostic is in the DNA, I pick the stack that fits your product. Whether you need someone to keep your releases from breaking or to build something that survives real users and not just a demo, send me a message. I'd like to hear what you're working on.

Launching a SaaS, AI-powered, web, or mobile application? I help product teams find critical bugs before your users do—so you can release with confidence. I am a Senior QA Engineer with 7+ years of hands-on experience in software quality assurance, helping startups, SaaS companies, and product teams deliver stable, secure, and high-performing web and mobile applications. I don't just execute test cases—I work closely with product managers, developers, and stakeholders to ensure quality throughout the software development lifecycle, from requirement analysis to release sign-off. Experienced working throughout the Software Development Life Cycle (SDLC) and Software Testing Life Cycle (STLC) in Agile, Scrum, and Kanban environments. Over the years, I've tested products across SaaS, FinTech, AI/LLM-powered applications, eCommerce, Healthcare, CRM, ERP, Learning Management Systems (LMS), online Marketplace platforms, Booking platforms, and enterprise web applications—catching critical issues early and helping teams avoid costly post-release fixes. ━━━━━━━━━━━━━━━━━━━━ WHAT YOU CAN EXPECT ✅ A complete QA strategy built around YOUR product — not a copy-paste checklist ✅ Detailed, reproducible bug reports your developers will actually thank you for ✅ Functional, regression, smoke, sanity & exploratory testing across web and mobile ✅ Automation frameworks that cut your testing time on every future release ✅ Clear daily communication, honest timelines, and zero surprises at launch ✅ Testing on real devices and browsers — not just "it works on my machine" ━━━━━━━━━━━━━━━━━━━━ MY CORE SERVICES 🔹 Manual Testing — Functional, regression, smoke, sanity, UI/UX, usability, cross-browser & cross-device testing. Experience testing authentication, user registration, role-based access, subscription management, dashboards, admin panels, customer portals, notifications, reporting modules, payment workflows, and third-party integrations. 🔹 Automation Testing — Selenium, Playwright, Cypress & Appium for web and mobile (iOS & Android) 🔹 API Testing — REST API testing, Postman, Swagger, request/response validation, authentication, backend data validation, third-party integrations, webhook testing, and end-to-end API testing. 🔹 AI Application Testing — Prompt validation, chatbot testing, AI response verification, conversation flow testing, and AI integration QA. 🔹 Performance & Load Testing — JMeter for stress, load & scalability checks 🔹 Real Device Testing — Windows, macOS, Android, iPhone & iPad for accurate cross-platform and real-world validation ━━━━━━━━━━━━━━━━━━━━ WHY WORK WITH ME ⭐ Quality ownership — I treat your product like my own. If something feels off, I flag it before your users do. ⭐ Clear communication — Daily updates, no jargon walls, and reports anyone on your team can read. ⭐ Agile-ready — I plug straight into Scrum/Kanban sprints and keep pace with your dev cycle. ⭐ Flexible engagement — One-time pre-launch test cycle or a long-term embedded QA partner; your call. ⭐ Detail-obsessed — The "edge case" bug that ships to production? That's exactly what I'm hunting for. ━━━━━━━━━━━━━━━━━━━━ Tools & Technologies Automation: Selenium, Playwright, Cypress, Appium API & Backend: Postman, REST Assured, Swagger Test & Bug Management: JIRA, TestRail, Zephyr, Trello CI/CD & Version Control: Git, GitHub, Jenkins Database: SQL / MySQL for backend data validation Methodologies: Agile, Scrum, Kanban ━━━━━━━━━━━━━━━━━━━━ Ready to ship with confidence? Send me your project details and I'll tell you exactly how I'd test it — what I'd prioritize, where the risks are, and how fast I can get you there. Let's build something stable together. 🚀

In today’s fast “vibe coding” world, features ship quickly but real user issues, broken flows, and edge cases often slip through. I test like an actual user, not a script focusing on what can break trust before your customers do. I combine sharp analytical thinking with AI-powered workflows to move fast without losing depth. I use AI to speed up reporting and repetitive tasks, while I focus on uncovering real problems in UX, logic, and user journeys. Having worked on 22,000+ hours across multiple business domains, I bring both technical expertise and a process-driven mindset to ensure every release meets the highest quality standards. Core Expertise: • Manual & Functional Testing (Web, Mobile, SaaS) • Automation Testing using Playwright, Selenium, and Cypress • API Testing with Postman & Integration Validation • Regression, UAT, and End-to-End Testing • Cross-Browser and Cross-Platform Testing • Test Planning, Strategy, and Documentation • Defect Management using JIRA, TestRail, ClickUp, etc. • CI/CD Integration and QA Process Optimization What makes me different: • I understand both startup agility and enterprise-grade process control. • I proactively identify edge cases and usability gaps that others often miss. • I deliver detailed bug reports, clear communication, and reliable timelines. • I can help you build, manage, and scale QA automation frameworks from scratch. Availability: Full-time or part-time Timezone:Available as per the needs Open to ongoing & fixed-price projects Let’s make your app unbreakable. 💬Message me now and let’s talk testing. =============Available Real Devices to test ================== ✔ MacbookAir,MacBookProM1 , MacbookM4 ================================================ ✔ iOS Devices - iphone 17 Promax - iPhone 15 Pro max - iPhone 14 Pro max - iPhone 13 - iPhone 12 - iPhone 11 Pro - iPhone 11 ================================================ ✔ Android devices - Samsung Galaxy Fold 4 - Samsung Galaxy S24 Ultra - Oneplus5 - etc

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.