Hire the Best QA Manual Testing Freelancers
in Vietnam

✅ Upwork Certified All-Star Freelancer Gold Club Member with "TOP RATED PLUS" Badge who has successfully helped many Fortune 500 companies (Ford & Lincoln Motor Companies, DELL Inc, Citibank, SolarWinds etc) with their product delivery. ✅ Listed among TOP 1% of Successful Upwork Freelancers with an over "9x% Job Success" Badge. Expert in QA, Manual Testing, Automation Testing (using different kind of programming languages and frameworks), QA and Project Management, Product development. ✅ 20,000+ hours of exclusive Software Quality Assurance, Software, App Development and Testing experience on Upwork (5 STAR rating) and 7+ years of corporate experience in the field of Product development, QA and testing software ✅ A Full time Freelancer & Certified Advanced SQA Manager ✅ Completed 10+ Projects with 5 STAR Rating ✅ Logged 20,000+ valid defects in these projects ✅ 100% client satisfaction record ✅ 93% are repeated clients ✅ 7+ Years of extensive experience in Manual, Automated testing and Product development. ✅ Extensive experience in Agile/Scrum/Kanban/Lean methodologies ✅ 100% flexible, can work in any time zone ✅ Extensive experience in working as a skillful offshore service provider and have successfully delivered testing projects to client all over the world [USA, Australia, Netherlands, Switzerland, Canada, Russia, India etc]. ✅ Cross browser testing in most platforms, OS (Win 7, Win 8, Win 8.1, Win 10, Mac OS X) and web browser versions (IE, Chrome, Firefox, Safari, Opera). ✅ Mobile testing on latest versions of Android and iOS 8.1.1, iOS 9, iOS 10, iOS 11 (iPhone 7 Plus, iPad and iPad Mini with retina display) tablets, phablets (Samsung Galaxy Note, Galaxy S8, LG G Pro, Motorola G2, G3, Moto X Play) and other smartphones. ✅ IE Edge, IE11 down to IE7, Chrome, Opera, Firefox and Safari on desktop, Mac, tablet (Android browser, Safari and Chrome) and mobile phone (Android browser, Safari and Chrome). ✅ Vast experience in Test management tools like TestRail, ApTest Manager, BaseCamp, Rally, Asana, Assembla, Trello, XRay, Microsoft Test Manager and knowledge in automated testing tools (QTP, Selenium, Protractor, Cypress and in-house tools). ✅ Expertise in Administering and using Defect Management and Tracking tools, like JIRA, Github, Gitlab, Pivotal Tracker, Bugzilla, Mantis, Rally, BugHost, Asana, Assembla, Trello , BugTracker, uBugTrack etc. ✅ Very good at providing testing documentation in form of release docs, test matrices and Powerpoint presentations. ✅ Ability to attain a quick understanding of the FRS / SRS and generate adequate test cases to ensure *near* 100% coverage of requirements. ✅ In case, no concrete requirement document is available, can make use of Exploratory Testing skills to perform testing with excellent results. ✅ Good understanding of Software Development Life Cycle (SDLC) and Software Testing Methodologies. Possesses good Communication, Analytical, Problem solving and Documentation skills. ✅ Expertise in System testing, Functional testing, Acceptance testing, Database testing and Regression testing. More than 6 years of experience in Product Testing while working in Agile Environments (TDD, Scrum). ✅ Extensive experience in both web (with specialization in cross browser compatibility, Usability and UI testing, functionality testing, cookie testing, security testing, session testing, user authentication testing etc) and product-based applications. ✅ Designing and executing System, Functional, Acceptance, Smoke and Regression Test cases.

Need someone who can research thoroughly, follow detailed instructions, and deliver accurate work without constant supervision? That's exactly how I work. Hi! I'm Thanh Nga, an Internet Research Specialist, Virtual Assistant, and QA Tester with over 15 years of professional experience in banking and financial services—an environment where accuracy, organization, confidentiality, and meeting deadlines were part of my everyday work. Since becoming a freelancer, I've expanded those skills into Internet Research, Web Research, Data Verification, Localization Testing, Mobile App Testing, Administrative Support, and Data Management. I genuinely enjoy projects that require investigation, structured thinking, careful documentation, and attention to detail. I have experience working on research-driven projects such as Point-of-Interest (POI) verification, organizing large datasets, Korean handwriting annotation, mobile game localization research, and Android application testing. These projects have strengthened my ability to work independently, learn new systems quickly, and follow complex instructions with precision. Whether you need someone to research information, verify data, test an application, organize files, document findings, or provide reliable administrative support, my goal is always the same: to deliver accurate, well-organized work that saves you time. Here's what I can help you with: ✅ Internet Research ✅ Web Research ✅ Online Research ✅ Market & Product Research ✅ Data Collection & Data Verification ✅ Virtual Assistance ✅ Administrative Support ✅ Data Entry (Excel, Google Sheets, CRM) ✅ File & Document Organization ✅ Mobile App Testing ✅ Website Testing ✅ Localization Testing ✅ QA Testing ✅ Report Writing & Documentation Why clients enjoy working with me ✔ 15+ years of experience in high-responsibility professional roles ✔ Strong attention to detail and analytical thinking ✔ Able to follow detailed instructions accurately ✔ Reliable communication and on-time delivery ✔ Comfortable working independently with minimal supervision ✔ Professional English communication (B2 CEFR) ✔ Fast learner who adapts quickly to new tools and workflows Recent freelance experience • Point-of-Interest (POI) Research & Data Verification for digital mapping services • Organizing and categorizing 1,000+ digital assets into structured databases • Korean handwriting annotation following detailed project guidelines • Mobile game localization research and Android application testing • Administrative support, documentation, and data management I believe the best freelancers don't simply complete tasks—they make their clients' work easier by being organized, dependable, and proactive. If you're looking for someone who enjoys solving problems, researching information, and producing accurate, well-documented results, I'd love to hear about your project.

Accomplished Senior QA Engineer with over 10 years of experience in software testing across various platforms, specializing in ensuring high-quality web and window applications. Skilled in manual testing, mentoring junior team members, and improving testing processes. Proven expertise in working with distributed teams and a wide range of tools and methodologies including Agile, Jira, Azure, Confluence, and Katalon. Committed to continuous improvement and delivering excellence in the field of software testing. Core Competencies • Test Planning & Execution: Expert in developing test plans, writing test cases, and creating test documentation. Skilled in regression, integration, system, usability, and acceptance testing. • Agile Methodologies: Strong understanding of Agile principles and Continuous Delivery processes. Experience working within Agile teams to ensure timely and quality delivery of software. • Tools & Technologies: Proficient with Jira, Confluence, TestRail, MS SQL Server, Fiddler, Charles, DevTools, Kibana, RabbitMQ, WebSocket, Docker, Redis, Postman, Jenkins. • Communication & Collaboration: Excellent communication skills, capable of working effectively with remote teams and managing stakeholder expectations. • Mentorship: Experienced in mentoring and training junior team members, fostering a culture of continuous learning and improvement.

Results-driven Senior QA with 19+ years of experience in manual and automation testing across global enterprise environments. Expert in developing and implementing UI automation frameworks using Robot Framework, Selenium, Playwright, and Katalon Studio. Proven track record of achieving 100% customer satisfaction scores, reducing customer reported bugs by 85%, and leading successful QA team initiatives. Strong background in defining QA processes, transitioning legacy systems to modern platforms, and mentoring cross-functional teams to deliver high-quality software solutions.

I am an AI Quality Evaluator and Manual QA Tester with experience evaluating conversational AI, speech synthesis (TTS), and mobile applications. My recent work includes evaluating AI-generated conversations and speech outputs using structured quality guidelines and detailed evaluation rubrics. I assess response quality, instruction following, factual consistency, naturalness, safety, and overall user experience while providing evidence-based ratings and rationales. In addition to AI evaluation, I perform manual mobile application testing, including functional testing, usability testing, UI validation, bug reporting, and user journey evaluation on both Android and iOS platforms. My background in telecommunications and IT enables me to approach testing with strong analytical thinking and attention to detail. Core skills: • AI Conversation Evaluation • Speech / TTS Evaluation • AI Quality Assurance • Manual Mobile Testing • Functional Testing • Usability Testing • Bug Reporting • Human Feedback & Rating • Quality Review • Technical Documentation I am committed to delivering accurate evaluations, clear reports, and reliable results.

I have been working in IT industry more than 7 years and have had the opportunity to work in many projects, such as web applications, e-commercial site, desktop based application as a Senior Test Engineer. + Manual testing: Web Application, Networking and Telecommunication. + Automation testing: CATT, TCL/TK, Selenium IDE, RC and Web Driver,XPath, Java, Perl, Python and SOAPUI, Load/Stress Testing and Security Testing. + Device for testing:, iPad and Android tablet, 2 computers with Window 7 and Window 10. +EDI implementation + Especially, I strong with these tools: Selenium, Telerik, TestComplete and SOAP Web Service automation testing. + In additional, SEO/SEM master freelancer with a professional experience. Omnidirectional interactive building of business through latest marketing analysis,internet marketing inducing search engine marketing,affiliate marketing,on/off page optimization and ranking of specific search engines - Have deep experience in various types of testing and QA like Functional, performance, Regression testing, Cross Browser Compatibility, Black box & White box testing, expert in usability testing for website and applications... - Proficient with online bug tracker tools like Atlassian JIRA, Quality Center, Bugzilla, Agile Task Tracking, etc... - Good understanding of the Agile and Scrum QA Processes and SDLC and capable of delivering on tight deadlines and working on multiple projects. Written a lots of test cases, test plans for many projects before and also, my responsibility in the team also included reviewing test cases. And I'm always making detailed bug reports with steps to reproduce, details of the bugs with screenshots. - Good at documentation, defect tracking, logging . My main objective is to achieve the best quality of work to be delivered to satisfied clients, quality testing and quality delivery is my specialty! - I'm very friendly, funny, very easy to work with as well as extremely fluent in English and strong communicative skill. - Why you will hire me? 1. My priority is to provide service to others with honesty and in timely manner. 2. I am very keen on every detail of my work to ensure of my quality work. - If you are looking for the above mentioned qualities then I am the right person who fits in your alley!