Hire the Best Functional Testing Specialists
in Ukraine

Clients rate our Functional Testing specialists
Rating is 4.9 out of 5.
4.9/5
Based on 331 client reviews
Ruslana B.

Ahronomichne, Ukraine

$50/hr
5.0
4 jobs

15+ years of hands-on experience in Software Testing, Quality Assurance, Mobile App Testing, Web Testing, and Manual Testing. I’m a Mobile App Tester | Web Testing | Software Tester | Manual QA Tester helping companies release stable, user-friendly Web & Mobile products with fewer production risks. 🏆 15+ YEARS IN QA | 3 PLATFORMS | 20+ QA SKILLS | 7+ DOMAINS My experience covers iOS, Android & Web and products across Hospitality, Entertainment, SportsTech, Booking, Loyalty, Gaming, and Mobile applications. I have worked across 100% of the SDLC - from requirements analysis to release and production support. As a Mobile App Tester | Web Testing | Software Tester | Manual QA Tester, I combine Software QA, QA Engineering, Quality Control, and Manual Testing to identify issues before release. 🚀 WHAT I BRING • 15+ years in Software Testing & Quality Assurance • 3 platforms: iOS, Android & Web • 7+ product domains • 20+ QA skills & 10+ testing types • Detailed Bug Reports with screenshots & videos 📱 MOBILE APP TESTING I provide Mobile App Testing across iOS + Android, including Functional Testing, Regression Testing, Integration Testing, Usability Testing, Exploratory Testing, Performance Testing, User Acceptance Testing, and End-to-End Testing. As a Mobile App Tester | Web Testing | Software Tester | Manual QA Tester, I test registration, authentication, onboarding, booking, payments, notifications, subscriptions, loyalty programs, and critical user flows. My process includes Manual QA & Edge-Case Testing, UX/UI Testing & Design Validation, Bug Identification, Documentation & Triage, Annotated Screenshots, Test Results & Analysis, and mobile app explainer videos. 🌐 WEB APPLICATION TESTING My Web Testing covers 4 areas: browsers, operating systems, devices, and screen resolutions. As a Mobile App Tester | Web Testing | Software Tester | Manual QA Tester, I perform Functional Testing, Regression Testing, Integration Testing, Exploratory Testing, Usability Testing, Performance Testing, and Cross Browser & Device Compatibility. I validate navigation, forms, authentication, booking, payments, responsive layouts, integrations, and critical customer journeys. 🔍 SOFTWARE QA & MANUAL TESTING With 15+ years in Software QA, I combine Manual Testing, Exploratory Testing, Manual QA & Edge-Case Testing, and Attention to Detail & Analytical Problem-Solving. I work as a software QA tester, manual software tester, software tester, QA tester, QA engineer, manual QA engineer, and Manual Quality Assurance specialist. As a Mobile App Tester | Web Testing | Software Tester | Manual QA Tester, I support active development, pre-release testing, and ongoing Product Stability. 🧪 10+ TYPES OF TESTING My expertise includes Software Testing, Functional Testing, Regression Testing, Integration Testing, API Testing, Usability Testing, Performance Testing, Exploratory Testing, User Acceptance Testing, End-to-End Testing, Game Testing, and Desktop Application Testing. API Testing covers requests, responses, status codes, validation, and data exchange. Integration Testing validates APIs, backend services, and third-party systems. As a Mobile App Tester | Web Testing | Software Tester | Manual QA Tester, I combine multiple testing approaches to improve Product Stability. ⚡ PRODUCT STABILITY & BUG REPORTING I focus on 5 key risks: crashes, broken critical flows, inconsistent states, data issues, and unexpected behavior. My Bug Tracking & Reports include reproduction steps, expected vs. actual results, environment details, severity/priority, Bug Reports, Annotated Screenshots, and videos. I can also support security-focused QA and coordinate Penetration Testing with specialized security engineers. As a Mobile App Tester | Web Testing | Software Tester | Manual QA Tester, I focus on 3 outcomes: Product Stability, User Experience & Release Confidence. 📌 CORE QA EXPERTISE Software Testing • Quality Assurance • Software QA • QA Engineering • Manual Testing • Mobile App Testing • Web Testing • Functional Testing • Regression Testing • Integration Testing • API Testing • Usability Testing • Performance Testing • Exploratory Testing • User Acceptance Testing • Quality Control • Bug Tracking & Reports • Bug Reports • Test Results & Analysis • Product Stability • Cross Browser & Device Compatibility • Game Testing • Desktop Application Testing • Manual QA & Edge-Case Testing • UX/UI Testing & Design Validation • End-to-End & Functional Testing • Bug Identification, Documentation & Triage 💬 LET'S WORK TOGETHER With 15+ years in QA, 3 platforms, 7+ domains, 10+ testing types & 20+ QA skills, I help teams find critical issues and release more stable products. Mobile App Tester | Web Testing | Software Tester | Manual QA Tester - available for Mobile App Testing, Web Testing, Software Testing, Manual QA, Software QA, QA Engineering & Quality Assurance. 📩 Send me: what you're building, your product stage, and what you need tested.

  • Functional Testing
  • Software Testing
  • Software QA
  • Test Results & Analysis
  • Quality Assurance
  • Regression Testing
  • Manual Testing
  • Web Testing
  • Mobile App Testing
  • Bug Tracking & Reports
  • Usability Testing
  • Integration Testing
  • API Testing
  • Game Testing
  • Desktop Application Testing
  • Annotated Screenshot
  • Product Stability
  • Cross Browser & Device Compatibility
  • Exploratory Testing
  • User Acceptance Testing
Valeriia M.

Odesa, Ukraine

$11/hr
5.0
8 jobs

⛔️ Stop losing users due to crashing apps, hidden navigation barriers, and unexpected glitches! ✅ I will find critical vulnerabilities in your website, mobile, or SaaS software before they cost you time, money, and reputation. 🎯 CORE STRATEGY & TECHNICAL APPROACH Finding a reliable QA Tester who can dive deep into your product architecture is crucial for a successful launch. I streamline chaotic testing workflows by setting up a clear strategy tailored to your specific business goals, ensuring ✅ 100% requirements coverage across the entire SDLC and STLC. As your QA Tester, I identify: 🐛 Functional bugs & Smart Contract user-flow anomalies 🚦 Performance bottlenecks & Latency issues 🔐 Security threats (OWASP Top 10 & Web3 entry vulnerabilities) — early in the development process to save you time and budget. 📊 PROVEN RESULTS As a results-oriented QA Tester, I focus on tangible impacts and data-driven metrics: 🏆 4+ years of hands-on QA experience delivering high-quality web applications, SaaS, and mobile apps. 🚀 100+ successful releases shipped (including Web3 & AI integrations). 🤖 4,000+ automated tests written and 📝 10,000+ manual test cases designed. 💵 $200,000+ saved for clients through optimized QA automation and early bug detection. ⚡ Optimized CI/CD pipelines to reduce regression cycles from 5 days to 4 hours through parallel test execution. 🚨 1,000+ critical bugs caught pre-release, including memory leaks, race conditions, and SQL injections. 🧩 COMPREHENSIVE SERVICES & EXPERTISE My approach as a versatile QA Tester covers every layer of your application: • 🤖 FULL-STACK AUTOMATION: Built scalable automation frameworks using Playwright, Cypress, and Selenium WebDriver with Page Object Model and BDD practices to ensure your test suite is maintainable and readable. • 🎮 MANUAL QA, GAME & WEB3 TESTING: Whether acting as a methodical manual tester or a dedicated video game tester, I cover mechanics, balance, and UI/UX consistency (Cocos, Unity) alongside standard suites. As a game tester, I ensure bug-free gameplay. Specialize in Web3 testing, verifying dApps, token transfers, and non-custodial wallet interactions. • 🔐 API, AI & SECURITY TESTING: Validation of business logic, authentication tokens, LLM prompt responses, and data integrity using Postman and REST Assured. I conduct security audits based on OWASP standards to protect against unauthorized data access. • 📈 PERFORMANCE & LOAD TESTING: Using JMeter and k6 to simulate high-traffic scenarios (Stress, Endurance, and Spike testing), identifying server-side bottlenecks before they impact users. • 📱 MOBILE APP TESTING: Flawless experience across real iOS (via TestFlight) and Android devices, testing for battery consumption, network switching (4G/5G/Wi-Fi), and interrupt conditions. • ♿ ACCESSIBILITY (A11Y): Guaranteeing WCAG 2.1/2.2 compliance through manual screen reader testing (NVDA, JAWS) and automated audit tools like AXE and WAVE. 📱 REAL DEVICE LAB: Cross-platform verification on real Windows 10/11 laptops, iOS (iPhone via TestFlight), and Android devices. 🛠️ TECHNICAL ECOSYSTEM 📌 Methodologies: Agile, Scrum, CI/CD, DevOps. 🧪 Testing Types: Black-box, White-box, Gray-box, Cross-browser, Localization (L10n), Usability, Integration, and UAT. 💻 Languages: Java, TypeScript, JavaScript, SQL. 🔧 Tools & Web3: Postman, Newman, TestFlight, Metamask, Coinbase Wallet, WalletConnect, Burp Suite, OWASP ZAP, Charles Proxy, Fiddler, Chrome DevTools. ☁️ Infrastructure: Jenkins, GitHub Actions, GitLab CI, Docker, Kubernetes. 📋 Management: JIRA, TestRail, Zephyr, Confluence, Monday, Trello. 🏢 INDUSTRY EXPERIENCE As a QA Tester with deep domain knowledge, I have successfully delivered projects in: 💳 FINTECH, WEB3 & CRYPTO: Secure payment gateways, dApps, DEX/CEX platforms, DeFi protocols, and transaction ledger verification. 🛒 E-COMMERCE: Magento, WordPress, and Shopify platforms with high-load user flows and P2P payments. 🏥 HEALTHCARE & EDTECH: Privacy-compliant systems (HIPAA) and interactive SaaS tools. 🎰 GAMBLING & GAMING: Real-time data processing, social features, and PC/Steam game testing. 🤖 GENERATIVE AI & CMS: Testing data integrity for AI models, AI chat-bots, prompt engineering, and content management flexibility. 💡 WHY MY METHODOLOGY WORKS Choosing me as your QA Tester means getting a specialist who plugs into all stages of the SDLC. I provide developer-friendly logs, videos, and impact assessments to simplify the debug workflow. I adapt fast to changing priorities, update test cases on the fly, and ensure testing stays aligned with your roadmap. I onboarding quickly and ask the right questions to minimize the training you need to provide. ✅ READY TO LAUNCH WITH CONFIDENCE? Don't let a minor bug ruin a major release. 💬 Click the green “Message” or “Invite” button at the top right of this page to discuss how I can help as your QA Tester to make your product stable, secure, and ready for scale!

  • Functional Testing
  • Software Testing
  • Testing
  • Software QA
  • Alpha Testing
  • Beta Testing
  • Static Testing
  • JavaScript
  • Manual Testing
  • QA Engineering
  • Automated Testing
  • Regression Testing
  • Exploratory Testing
  • API Testing
  • Mobile App Testing
  • Usability Testing
  • Web Testing
  • Selenium
  • Interface Testing
  • Quality Assurance
Ivan V.

Lviv, Ukraine

$20/hr
5.0
95 jobs

⭐️ Highly skilled QA Engineer with over 9 years of experience in various types of testing, including web, mobile, and desktop platforms. Proficient in creating test documentation, working with Agile methodologies, and utilizing a wide range of testing tools and frameworks. ⭐️Top Rated Plus freelancer⭐️ 100% Job Success 📌Summary of Skills: * Manual Testing Mobile Applications (Android & IOS with Testflight installed) * Manual Testing of Desktop Software and Web-based Software * Excellent bug finder with a good eye for details, receiving awards and bonuses * Document creation (Test plan, test case, test script, test scenario, user's manual) * Report Bugging Documentation * Project Handover Documentation * Worked on Agile Methodologies 📌Scope of Testing: * Manual Testing (Functional testing such as smoke and sanity testing, regression, usability, alpha-beta, positive and negative, GUI, exploratory, API, and end-to-end testing) * Mobile Apps Testing * Game app testing(mobile/desktop) * Cross-browser Testing * UI/UX Testing/Feature suggestion * Test media platforms such as Roku, Visio, Tizen, Apple TV, Fire TV, and Android TV - 5 years of experience 📌Technical Experience: * Platforms: Windows XP, Windows 7, Windows 10 * Database: MySQL * Remote Applications: TeamViewer, Remote Desktop Application * Defect Tracking and Management Tools: JIRA, Trello, X-Ray, Excel, Youtrack, Zephir, Mantis * Other software/tools: Browserstack, Google Apps, Dropbox, Postman, Slack, Microsoft Teams * Microsoft Applications and documentation tools 📌Devices: * Android - Xiaomi mi 9t PRO * iPhone XR, iPhone 12 plus, iPhone 13 (TestFlight ready) * Tablet - iPad 8 gen * Apple TV * Google Chromecast ⭐️ Why you should choose me over another freelancer ⭐️ - I provide high-quality and professional work so that the customer has a positive experience of working with me, is satisfied with the result, and wants to come back to me next time with a new job offer. - I believe that my passion for testing and ability to learn, adapt to new challenges, and grow make me a strong competitor. Have any questions or want to discuss your projects? Please do not hesitate to contact me. Let’s get started! Cheers! ------------------------------------------------------------------------------------------------ Keywords: Quality Control, Manual Testing, Quality Assurance, QA Testing, Web Testing, Bug Reports, GUI Testing, UI Testing, Software QA, QA Engineering, Desktop Application Testing, Functional Testing, Non-functional, Software Testing, Web App Tester, Usability Testing, User Acceptance Testing, Defect Tracking, Test Reporting, Test Plan, Test Case, Data Testing, Website Testing, User Story, Beta Tester, Stability/Reliability testing, Compatibility testing, Black box Testing, Cross-Browser Testing, Cross-Device Compatibility, Retesting, Front End Testing, Accessibility testing, Web Content Accessibility Guidelines (WCAG).

  • Functional Testing
  • Testing
  • Software QA
  • Beta Testing
  • Web Testing
  • Test Design
  • Game Testing
  • Requirement Analysis
  • TestFlight
  • GUI Testing
  • iOS
  • Manual Testing
  • Android
  • QA Testing
  • QA Software & Testing Tools
  • Test Plan
  • Mobile QA
  • QA Engineering
  • Test Case Design
Maryna P.

Kyiv, Ukraine

$20/hr
5.0
1 jobs

Hi! I’m a full-time Manual Game QA Tester, open to small, clearly scoped QA projects for games, web products, e-commerce platforms, admin dashboards, and customer-facing websites. I work with real product builds on a daily basis: testing features, finding bugs, writing clear and structured bug reports, and creating practical test cases and checklists. In my current role, I also review bug reports submitted by my colleagues and help keep our reporting standards consistent across the team. I also have experience in project management, customer support, content management, and technical writing. This helps me communicate clearly, keep testing organized, understand products from the user’s perspective, and prepare documentation that is practical for both developers and clients. --- Game QA: Experience & Services --- Platforms I’ve worked with: - PC: Steam, Epic Games Store, WinGDK / Microsoft Store - Consoles: PS4, PS5, Xbox One, Xbox Series X|S - Cloud gaming: Google Stadia (service discontinued), Amazon Luna Projects I’ve worked on include Far Cry 6, Riders Republic, Anno 1800, Skull and Bones, Tom Clancy's Rainbow Six Extraction, Insurgency: Sandstorm, etc. What I can do for you: - Focused QA pass for your game or a specific part of it - I can test a feature, level, mode, build area, demo, or update and provide a structured bug report. - Bug reporting - I can document issues with clear repro steps, actual/expected results, severity, probability, logs, screenshots, and videos when needed. - Test cases for your game or feature - I can cover a full game flow, specific feature, UI/settings area, progression flow, controls, or gameplay system with structured test cases. - QA checklists - I can create a lighter smoke, regression, feature, or release checklist if you need something practical and easier to maintain. - Small tester/player notes - if I notice something confusing, risky, or uncomfortable from a player’s perspective while testing, I can add it as a short extra note. My game QA background: - Full-time Manual Game QA experience on PC, console, and cloud gaming projects, including functional testing, smoke/regression checks, bug reporting, and QA documentation. - Hands-on testing of features, UI, settings, controls, progression, gameplay flows, multiplayer, and content/DLC-related areas. - Strong experience writing practical test cases and checklists from features, flows, requirements, or direct game exploration, plus maintaining and executing them in the team’s preferred format. - Compliance-focused testing experience, used as background knowledge rather than a standalone service here. For security reasons, I prefer to work with builds shared through trusted channels, such as Steam keys, itchio/private project pages, official cloud storage, or another agreed secure method. --- Web & E-commerce QA: Experience & Services --- In one of my previous roles, I worked with a proprietary e-commerce platform and combined customer support, project management, content management, and technical writing with hands-on QA responsibilities. I tested new features in the platform’s admin dashboard, investigated issues affecting client storefronts, verified fixes, and tested the platform’s public-facing marketing website. I also worked closely with the admin panel from a user perspective by writing user guides and release notes, recording tutorial videos, and preparing interface tooltips. Later, I worked as a Project Manager in a small WordPress development team without a dedicated QA specialist. Alongside project management, I tested online stores and other websites, including new functionality, responsive behavior, checkout and customer flows, and bug fixes before delivery. For web projects, I can test admin dashboards, customer-facing websites, online stores, and specific user flows, either by following your existing test plan or through a focused exploratory QA pass. I’m comfortable working with Jira, ClickUp, Notion, TestRail, spreadsheets, or another tracking system your team already uses.

  • Functional Testing
  • Game Testing
  • Project Management
  • Bug Reports
  • Test Case Design
  • Compliance Testing
  • Regression Testing
  • Documentation
  • Jira
  • Atlassian Confluence
  • Trello
  • ClickUp
  • TestRail
  • Proofreading
  • Web Testing
Roman M.

Lviv, Ukraine

$20/hr
5.0
71 jobs

Hello, 🏆 Top Rated Plus Upwork Freelancer ⏱ 14000+ hours billed on UpWork 💻 55+ Projects ✅ Verified portfolio About seven years of experience in software quality assurance and control. Skills & Experience: - manual testing; - QA management; - Web / desktop projects testing; - Mobile applications testing; - SCRUM Certificates: ISTQB® Certified Tester – Foundation Level – May 2017; Skills: - Platforms: macOS, Windows; - Mobile: iOS, Android; - API: Swagger, Postman; - Design & Mockups: InVision, Figma; - Test Management and Issue-Tracking Tools: Atlassian Jira, TestRail, TestLink, Trello, Asana, Phabricator, ClickUp - Database; MySQL, PSequel; - Continuous Integration and Version Control Systems: GoCD, GIT; - Software Testing Methods: Black box, Functional, User Interface testing (HTML, CSS), Regression, Usability, Localization, Compatibility, System, Acceptance, Cross-platform, Cross-browsing; - Test Design Techniques: Equivalence Partitioning, Boundary Value Analysis, Decision Tables, State Transition, Use case testing; - Software Development Methodologies: Scrum, Kanban, Waterfall.

  • Functional Testing
  • Software Testing
  • Software QA
  • Usability Testing
  • Web Testing
  • Trello
  • Mobile App Testing
  • API Testing
  • Manual Testing
  • Test Plan
  • Business with 10-99 Employees
  • Business with 1-9 Employees
  • QA Management
  • QA Engineering
  • Quality Assurance
Yuriy K.

Lviv, Ukraine

$18/hr
5.0
12 jobs

🥇 Top Rated Freelancer on Upwork 🥇 5 plus Years of Experience in Manual QA 🥇 Full coverage Manual QA for Web and Mobile products, including API validation 🥇 Clear, developer friendly test documentation and bug reports 🥇 Smooth cooperation in remote teams and Agile workflows Performing such types of testing ✅ Manual ✅ Exploratory ✅ Functional ✅ System ✅ Regression ✅ Smoke ✅ UI and UX testing ✅ Cross browser and compatibility testing ✅ API testing Also have hands-on experience with Test Automation 🤖 Automation QA (AI-assisted): built and maintained automated test scripts leveraging AI tools (Claude, ChatGPT) to accelerate script writing, debugging, and maintenance, combining manual QA expertise with modern AI-powered automation workflows Experienced in Reviewing requirements and clarifying acceptance criteria before testing starts Creating practical test scenarios and test cases based on real user behavior Reporting bugs with clear reproduction steps, expected versus actual results, and evidence Supporting fast release cycles by verifying fixes and running regression before production Working closely with developers and product leads to reduce regressions in complex workflows Technical expertise in Manual QA includes 🔎 Management tools: Jira, Azure DevOps, TestRail, Trello, Confluence, Asana 🔎 API testing: Postman, Swagger 🔎 Debugging: Datadog, Splunk, Amplitude 🔎 Cross browser testing: BrowserStack, LambdaTest 🔎 Databases: basic SQL, PostgreSQL 🔎 Remote collaboration: clear async updates and structured status reporting 🔎Mobile testing: TestFlight, Google play, Firebase, Appstore connect I have worked with SaaS style products and workflows where many objects and calculations depend on each other, so I test not only isolated features but also system behavior and edge cases. I will be glad to help your team ship stable releases that meet business needs and feel reliable for users. Feel free to message me and share your product scope. QA Tester, Manual QA, Software Quality Assurance, Web and Mobile Testing, SaaS QA, Functional Testing, Exploratory Testing, Regression Testing, Smoke and Sanity Testing, End to End User Flows, UI and UX Testing, Responsive Design Testing, Cross Browser Compatibility, iOS and Android App Testing, UAT Support, Release Verification, Production Checks, Bug Reporting, Defect Triage, Repro Steps, Test Cases and Checklists, Test Plan, Acceptance Criteria Review, Requirements Validation, Edge Case Coverage, API Testing, REST API Validation, Postman, Swagger, Chrome DevTools, Network Logs, HAR Capture, SQL Queries, PostgreSQL, Salesforce QA, SOQL, Stripe Payments Testing, Webhook Validation, Analytics Tracking Validation, Amplitude, Jira, TestRail, Confluence, Azure DevOps, Trello, BrowserStack, LambdaTest, TestFlight, Firebase, App Store Connect, Remote Testing, Azure Virtual Machines, AnyDesk, Localization QA, Content QA, Data Integrity Checks, Calculation Validation, Session Based Testing, Agile QA, Sprint Testing, Automation QA, Test Automation, AI Assisted Test Automation, Automated Test Scripts, Script Maintenance, Low Code Automation, AI Powered QA Workflows

  • Software Testing
  • Software QA
  • QA Testing
  • Manual Testing
  • Jira
  • TestRail
  • Web Testing
  • Mobile QA
  • Salesforce
  • Postman
  • Asana
  • Azure DevOps
  • Trello
  • Stripe
  • Quality Assurance
  • Smoke Testing
  • Regression Testing
  • BrowserStack
  • End-to-End Testing
  • Mobile App Testing

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