Hire the Best Software QA Testers
in the United States

Bugs found before launch save thousands in fixes after. I help startups and product teams ship cleaner software by catching critical issues early — before real users do. What I deliver: → Detailed bug reports with clear reproduction steps → Structured test cases for web & mobile apps → Fast turnaround with clear communication Tools: Jira, Trello, TestRail | Certified in Software Quality Engineering Ready to test your product? Let’s talk

⭐ Top 3% of QA Freelancers on Upwork Platform ⭐ Top Rated Plus since 2018 I’m a highly-detailed Software Quality Assurance Tester, with over 12+ years of hands-on experience testing web, mobile, and desktop applications. I'm passionate about testing, finding solutions, and helping companies create rock-solid reliable digital products free of bugs 🐞🐞🐞. My specialties include: • Mobile/Web Application Testing • Manual testing • Mobile App Testing • Detailed Test Plan & Test Case Development • Back-end Database & API Testing: PostMan • JIRA Available Physical Testing Devices =========================== Apple: iPhone XR, iPhone 12 Pro, iPad, Macbook Air, Macbook Pro Android: Android - Samsung Galaxy Desktop: Windows Desktop, Windows Laptop, OS X - Mac BrowserStack Account with instant access to 3000+ desktop browsers and real mobile devices Project Management and Defect Tracking Tools ================================== JIRA, Trello, SharePoint, Bugzilla, Asana, Notion, Confluence,

I have hands-on experience in AI data annotation, labeling, and evaluation, supported by a strong scientific research background that emphasizes accuracy, consistency, and protocol adherence. Through freelance and platform-based AI projects, I have worked on image, audio, and content annotation tasks, carefully following detailed guidelines to produce high-quality training data for machine learning models. My background in biological research has strengthened my ability to analyze complex information, maintain precise documentation, and apply standardized evaluation criteria—skills that directly enhance my effectiveness in AI data labeling, quality assurance, and model training workflows.

Hi, I’m Mark. I'm a QA Engineer focused on website and application testing. I help businesses ensure their websites and applications work smoothly by identifying bugs, validating user flows, and providing clear, actionable feedback. I have hands-on experience testing real-world systems and understand how to approach testing from both a user and technical perspective. What I can help you with: Website and web application testing Identifying and documenting bugs (clear steps to reproduce, expected vs. actual results) Testing user flows (sign-up, login, checkout, forms, etc.) Basic data validation and backend checks (SQL exposure) Cross-browser and usability testing My background: QA experience testing applications and reviewing logs Experience working with backend systems and troubleshooting issues Professional experience in test automation (Python/pytest), which helps me think systematically and catch edge cases I focus on being detail-oriented, reliable, and easy to work with. My goal is to help you catch issues early and improve the overall quality of your product. If you’re looking for someone to thoroughly test your website or app and provide clear, professional feedback, I’d be happy to help.

Technical Business Analyst, Product Manager & Project Management Consultant with 16+ years of experience delivering data-driven digital solutions in 4 core industries: 🔹Banking 🔹Fintech 🔹Insurance 🔹Human Resources My tenure with Tier-1 organizations like JP Morgan Chase ( 7 Years) , Capgemini (4 Years ) , and Aon Hewitt (2 Years) has endowed me with: 🔹Deep domain expertise 🔹A proven track record of driving results in high-stakes enterprise environments I specialize in: 🔹Evaluating systems, processes, and user experiences 🔹Bridging the gap between business stakeholders and technology teams 🔹Translating ambiguous business problems into clear, structured requirements, process designs, and actionable delivery plans Whether you need: 🔹 A Business Requirements Documentation (BRD) crafted from scratch 🔹 Functional Requirements Documents (FRD) 🔹 User Stories & Acceptance Criteria 🔹 Agile/Scrum Documentation 🔹 An Agile team led through a complex sprint cycle 🔹 A system implementation managed end-to-end 🔹 UAT Planning & Support 🔹 Process Flow Diagrams 🔹 Gap Analysis 🔹 Data Mapping & Workflow Documentation 🔹 Stakeholder Communication 🔹 Project Coordination & Delivery Support I bring structured thinking, strong communication, and enterprise-level execution to every engagement. 𝗞𝗘𝗬 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘 📌 Business Analysis Requirement Gathering • Functional Analysis • Documentation • Technical Writing • Workflow Analysis • Process Improvement • UAT • Functional Testing • Production Support • Business Process Design • SOPs • Roadmap Delivery 📌 Agile & Project Management Sprint Planning • User Stories • Backlog Management • Stakeholder Management • Risk Assessment • Status Reporting • Vendor Coordination 📌 Domain Expertise Banking • Credit Cards • Fintech • Insurance • HR Systems • Clinical Research • Data Management 📌 Data & Technical Skills SQL • SAS • Informatica • Teradata • ETL • Data Mapping • Data Quality • Reporting 📌 Tools & Platforms Jira • Confluence • MS Excel • MS Project • SharePoint • Tableau • Power BI • Salesforce CRM • ERP Oracle HCM, SAP HR 📌 Methodologies Agile • Scrum • Waterfall • SAFe ✅ Why clients work with me: ✔ I offer a unique combination of Business Analyst, Project Manager, Product Manager, Client Engagement Manager, Client Interview, Operation Consultant, Operation Manager, Business Manager, Technical Business Analyst, Operation Team Member, Business Development Manager and communication leadership roles which are typically handled by separate resources. ✔I serve as a central coordination partner across clients, stakeholders, and delivery teams — simplifying collaboration and improving execution efficiency across projects. ✔ Clear and structured documentation ✔ Strong business-to-technology communication ✔ Enterprise project experience ✔ Reliable stakeholder management ✔ Fast learning and problem-solving ability ✔ Detail-oriented delivery approach In addition to delivery roles, I have participated in hiring panels, helping organizations evaluate candidates and align talent with business and team needs. Clients consistently value my ability to clarify complex requirements, bridge business and technology teams, and drive projects towards successful outcomes, as reflected in my portfolio items Let’s discuss how I can help streamline your requirements and bring delivery excellence to your next project. Thank you!

• 15+ years of experience in automated and manual testing of web, mobile, SaaS, and AI applications. • Expertise in building test automation frameworks from scratch, incl. Cypress, Playwright, and Selenium. • Expert in developing test plans, creating test cases, investigating software defects, creating bug reports. ⭐ 1st US QA expert on UpWork to earn Expert-Vetted (Top 1%) badge*. 100% Job Success score. • Strong background in implementing QA methodologies and creating detailed test documentation. • Experienced with functional, usability, UAT, regression, cross-platform, API, security, and load testing. • Skilled in test management, issue/bug tracking tools, visual testing tools, and test environments. • Experienced in using AI tools to enhance the speed and coverage of manual and automated testing. • In-depth knowledge of SDLC, STLC, Agile/Scrum, Waterfall, UI/UX and accessibility best practices. • Proficient in programming and scripting languages, and databases. • Hands-on experience with version control, CI/CD, and cloud environments. • Prior experience as a Web Developer and ERP Engineer. CORE TECHNICAL SKILLS Test automation: Cypress, Playwright, Selenium WebDriver, Postman, Appium, JMeter, Testim, JUnit, TestNG, Mocha, Chai.js. Test management: TestRail, QMetry, Azure Test Plans, qTest, Tuskr, Testiny, Testmo, Xray, Zephyr. Issue and bug tracking: Jira, Azure DevOps, ClickUp, Trello, GitLab, Bugzilla, Linear, BugHerd, Asana. Languages: JavaScript, TypeScript, Java, HTML, XML, CSS, SQL, XPath. Databases: MSSQL, Oracle, MySQL, PostgreSQL. Other: React, Vue, Next.js, Node.js, Angular, AWS, Azure, Docker, Jenkins, GitHub, CircleCI, Git, WordPress, Figma, BrowserStack, Mailosaur, Linux, Windows, macOS, iOS, Android. * Expert-Vetted badge is visible only to Upwork's Enterprise and Business Plus plan clients; others see my Top Rated Plus badge.