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.
Test Results & Analysis
Software Testing
Quality Assurance
Regression Testing
Functional 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
Software QA
Dmytro S.
Ivano-Frankivsk, Ukraine
$20/hr
5.0
10 jobs
ISTQB-certified manual QA engineer with 8+ years in software testing across web applications, mobile apps, and API products.
✅ 9+ years in manual QA and software testing.
✅ ISTQB Certified Tester since 2024 - the internationally recognized standard for QA professionals. ✅ Load testing with JMeter adds performance coverage beyond standard functional manual QA.
✅ 4,041 hours billed directly on Upwork across 9 contracts.
✅ 99% Job Success Score and Top Rated Plus.
✅ Manual testing and web testing delivered for SaaS platforms, healthcare, fintech, and e-commerce products.
Part of Pecode, a Top Rated Plus Upwork agency with 8+ years on the platform, 306,000+ hours billed, 99% Job Success Score, and 150+ IT professionals across QA, frontend, mobile, and design. Pecode is recognized as a Top Software Testing Company in Eastern Europe.
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WHAT I DO
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Manual testing and web testing across web applications, mobile apps, and APIs. Full QA cycle from test plan to release sign-off:
- Manual testing for new features and regression testing on every release
- Web testing and web QA across all major browsers and screen sizes using Chrome DevTools and BrowserStack
- Mobile app testing on iOS and Android - real devices and BrowserStack
- API testing using Postman, Swagger, and proxy tools
- Load testing and performance testing using JMeter
- End-to-end testing covering full user journeys across web and mobile surfaces
- Test case design and test suite management in TestRail
- Bug reporting in Jira, Azure DevOps, and Confluence with clear reproduction steps, screenshots, severity labels, and expected vs actual behavior
- Database QA and backend verification using SQL and MongoDB
- Release sign-off with structured QA reports and test summaries
- QA process setup for teams building their testing workflow from scratch
Manual QA and web testing verticals I cover: SaaS platforms, healthcare products, fintech applications, e-commerce (including Magento), enterprise software running on Azure DevOps and Dynamics 365, and consumer mobile apps.
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WHO I WORK WITH
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Best fit for:
- SaaS and B2B platforms preparing for releases or needing ongoing manual testing coverage
- Healthcare, fintech, and e-commerce products where a bug in production costs real money
- Mobile apps (iOS and Android) at any release stage needing a dedicated mobile tester
- Enterprise products running on Azure DevOps or Dynamics 365
- Teams that need one accountable manual QA engineer, not a rotating pool of testers
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HOW I WORK
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Week 1: I review your product, requirements, and existing test artifacts. I write a test plan covering scope, types of testing, environments, and priority bug areas. For web testing engagements this includes a browser and device coverage matrix.
Week 2 onward: structured manual testing in your sprint cadence. Daily bug reports in your tracker. Regression testing after every release. API testing running in parallel with functional manual QA. Weekly QA summary reports for the engineering and product team. I ask before assuming and flag risks early.
I overlap with EU and US business hours and respond within 4-8 hours during the working week.
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FREE QA AUDIT - START HERE
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Share your staging URL and a brief on the riskiest area of your product. I will run a focused manual QA pass, log the first bugs I find with full reproduction steps and severity labels, and send back a sample bug report and a test plan outline within 48 hours - no cost, no obligation. It gives you a clear picture of the quality of my manual testing work before any contract starts.
Not at the testing stage yet? Share your product brief and I will send back a recommended QA approach and test coverage plan tailored to your stack and release schedule.
Test Plan
API Testing
Manual Testing
Mobile App Testing
Functional Testing
QA Engineering
Web Testing
Performance Testing
Usability Testing
Compatibility Testing
Software Testing
Software QA
Bug Reports
Automated Testing
Quality Assurance
End-to-End Testing
Regression Testing
SQL
Test Case Design
QA Testing
Sergii L.
Kiev, Ukraine
$99/hr
4.8
247 jobs
**Working in EU and US time zones**
⚡ Top 1% on Upwork — Expert-Vetted
⭐ 100% Job Success Score
🚀 Helped 100+ companies improve their tracking, analytics, and conversion performance
I’m a Senior Digital Analytics and Tracking Implementation Specialist who helps businesses collect accurate data, connect marketing platforms, and turn analytics into actionable insights.
My work goes beyond installing tracking codes. I design reliable measurement systems across websites, advertising platforms, CRMs, payment systems, and data warehouses—so you can trust your numbers and make better decisions.
How I can help:
• Audit and repair inaccurate or incomplete tracking setups
• Implement GA4 and Google Tag Manager from the ground up
• Build server-side tracking with server-side GTM
• Configure e-commerce and subscription tracking
• Implement Meta Conversions API and other server-side integrations
• Set up Google Ads enhanced and offline conversions
• Connect CRM, payment, and backend data with advertising platforms
• Build BigQuery data pipelines and custom reporting tables
• Create Looker Studio dashboards and funnel reports
• Track leads, purchases, customer status, revenue, margin, and lifetime value
• Design measurement plans and technical tracking specifications
• Support CRO experiments with reliable event tracking and reporting
• Diagnose discrepancies between GA4, ad platforms, Shopify, CRM, and backend data
Core expertise:
• Google Analytics 4 and GA360
• Google Tag Manager and server-side GTM
• BigQuery, SQL, and Dataform
• Looker Studio and Tableau
• Google Ads conversion tracking
• Meta Pixel and Conversions API
• LinkedIn, TikTok, and Microsoft Ads tracking
• Shopify and Shopify Customer Events
• Magento, Webflow, Stripe, and custom applications
• Salesforce, Pipedrive, Odoo, Calendly, and other CRM integrations
• Consent Mode, cookie consent, and cross-domain tracking
• A/B testing, funnel analysis, and conversion rate optimization
I can lead the complete analytics implementation process—from requirements and measurement planning to technical implementation, QA, reporting, and communication with developers and stakeholders.
You’ll get clear communication, practical recommendations, carefully tested implementations, and documentation your team can continue using after the project is complete.
If your analytics numbers don’t match, important conversions are missing, or you need a scalable tracking architecture, send me a message with a brief description of your setup and the problem you’re trying to solve.
A/B Testing
Conversion Rate Optimization
Google Analytics
Google Optimize
Optimizely
Marketing Analytics
Pixel Setup & Optimization
Google Tag Manager
Web Analytics
Tag Manager Setup
BigQuery
JavaScript
Data Analytics
Firebase
Danylo D.
Kyiv, Ukraine
$23/hr
5.0
2 jobs
👆QA Engineer & QA Specialist - 10+ Years in Quality Assurance
I'm a Senior QA Engineer, QA automation specialist, and QA tester with 9+ years of experience across FinTech, Healthcare, eCommerce and SaaS products. As a QA specialist, I help startups and mid-size teams turn ad-hoc checks into real quality assurance - from a single pre-launch QA testing pass to a full QA automation framework. Whether you need a thorough manual testing pass before launch, an automated testing framework from scratch, or a strategic QA testing audit, I bring the expertise to deliver.
⚙️ CORE SERVICES & SKILLS
✅ Manual Testing & Manual QA - exploratory, smoke, sanity, end-to-end, web and mobile
✅ QA Automation & Automated Testing - Selenium automation, Playwright and Cypress
✅ Functional Testing - business logic, user flows, feature validation
✅ API Testing - REST/GraphQL validation and schema checks
✅ Web Testing - cross-browser compatibility and frontend quality
✅ Mobile App Testing - native and hybrid, iOS and Android
✅ Performance Testing - load, stress, response-time benchmarking
✅ Regression Testing - structured suites for release stability
✅ Usability Testing - QA tester-led UX feedback that improves conversion
✅ Beta Testing - early adopter programs building on manual QA feedback
✅ Bug Tracking & Reports - severity, SLA tracking for every QA tester on the team
✅ Test Case Design - reusable, maintainable documentation
✅ Software Testing Strategy - end-to-end QA testing roadmaps
📋 PROJECT TYPES & DELIVERABLES
→ Pre-launch QA audit - manual QA review and a quality assurance readiness check
→ QA process setup a QA specialist's foundations for teams starting from zero
→ Test automation implementation - Selenium automation, Playwright, or Cypress in CI/CD
→ Regression testing optimization - less manual effort via targeted QA automation
→ QA consulting - a QA specialist's take on strategy, tools and QA analyst guidance
→ Ongoing QA support - manual testing, QA tester coverage and automation upkeep
→ Platform-specific QA - dedicated QA engineer support for Magento tester projects
📊 CASE STUDIES
1️⃣ FinTech Payments - QA Testing Process from Scratch
Joined a 5-person FinTech team with no formal quality assurance process. As their QA engineer, I audited Jira, introduced severity-based triage and built a regression checklist for payment flows — combining manual QA fundamentals with hands-on QA automation. Ran functional, API, performance and usability testing with merchants.
Result: average bug resolution time dropped ~35%, manual regression time fell ~40% and 18 critical payment-flow defects found pre-launch. The client kept me on as their go-to QA specialist since.
2️⃣ Healthcare SaaS - Manual QA tester & QA Automation for Audits
Worked as the QA specialist owning quality assurance for a healthcare platform serving 200+ clinics. Combined QA testing with automated coverage (Selenium, Playwright) across patient records, clinician usability, API and mobile testing - the team's hands-on QA tester ahead of every audit.
Result: regression time per release dropped from ~16 hours to under 6 and six straight compliance audits passed with zero critical defects.
3️⃣ eCommerce Platform - QA Automation Audit & Selenium/Playwright PoC
Brought in as QA engineer for a QA testing audit and gap analysis, plus a Selenium vs. Playwright/Cypress maintainability brief. Built a modular PoC (POM, data-driven) covering search, checkout and key API flows, blending manual QA insight with automation-first thinking, wired into GitHub Actions with pass/fail reporting.
Result: ~30 automated test cases covering ~80% of the critical checkout flow, cutting manual regression effort in half.
👉 HOW I WORK
① Discovery call - understanding your product, team, and quality assurance goals
② Assessment - evaluating current QA testing maturity as a QA specialist, plus quick wins
③ Execution - manual QA, QA automation, or a blended approach for your scope
④ Documentation - test case design, bug reports, and a clear QA testing summary
⑤ Handoff - recommendations plus optional ongoing QA engineering support
Clients get a QA tester for Agile/Scrum workflows and a QA engineer who thinks like a product owner, PCI DSS- and HIPAA-aware for FinTech and Healthcare.
🛠 TOOLS & TECH STACK
Selenium WebDriver, Playwright, Cypress, Jira, TestRail, Postman, Charles Proxy, GitHub Actions/Jenkins, BrowserStack/Sauce Labs, and Magento.
🤝 WHO I WORK WITH
Over the years, I've embedded into teams of every shape - collaborating daily with every full-stack developer, web designer, project manager and DevOps engineer on the roster. I often serve as a translator between technical teams and business stakeholders, making sure requirements are understood, edge cases are covered and nothing slips through the cracks.
Test Plan
Test Results & Analysis
Web Testing
Regression Testing
Software QA
Software Testing
QA Engineering
Functional Testing
Mobile App Testing
Automated Testing
API Testing
Manual Testing
Usability Testing
Quality Assurance
Selenium WebDriver
Performance Testing
Test Case Design
Test Strategy
Test Design
Test Management
Oleg M.
Vinnytsya, Ukraine
$55/hr
4.9
145 jobs
🔬 Conversion-focused audits for eCommerce & service websites
📈 I help eCommerce and service websites increase conversion rates and revenue by identifying exactly where they lose customers — and how to fix it
🧠 12 years specializing in CRO, UX & SEO audits
🥇 Top Rated | 100% Job Success | + 3000 projects |+ 600 reviews (on various freelance sites))
📝 The following types of audit are available for order:
✅ Revenue Growth Audit (CRO & UX)
🔬 Conversion-focused audit for eCommerce & service websites
👉 I show exactly where you’re losing customers — and how to fix it
What I analyze:
✔ Responsive (mobile) & cross-browser performance
✔ Bugs & UX issues affecting conversions
✔ User behavior (GA4, Hotjar, Clarity, etc.)
✔ Heatmaps, clickmaps, scrollmaps, session recordings
✔ Landing pages & conversion funnels
✔ UX/UI & usability (including heuristic analysis)
✔ Conversion elements (CTA, forms, structure, trust elements)
✔ Conversion leaks & growth opportunities
🕙︎ Delivery: 4-5 days
🎯 Result: Clear, prioritized action plan focused on increasing conversions and revenue
⚡ Portfolio sample available on request
✅ Revenue Growth Audit (CRO + UX + SEO)
📈 Full analysis to improve both conversions and organic traffic
Everything from CRO/UX audit PLUS:**
✔ Technical SEO audit
✔ On-page SEO (content, structure, internal optimization)
✔ Off-page analysis (backlinks & external signals)
✔ Keyword & search intent analysis (if available)
🕙︎ Delivery: 5-7 days
🎯 Result: Сlear, prioritized action plan to increase conversion, traffic, and revenue.
⚡ Portfolio sample available on request
Conversion Rate Optimization
Google Analytics
Usability Testing
UX Research
SEO Audit
Store Audit
Ecommerce SEO Audit
Website Audit
Web Analytics
Web Analytics Report
Data Analysis
Data Analytics
Design Analysis
User Behavior Analytics
Design & Usability Research
Hotjar
Session Recording
Heuristic Evaluation
Funnel Testing
Growth Analytics
Kostya K.
Odessa, Ukraine
$30/hr
4.8
20 jobs
Building AI features? Planning a major release? I help companies release with confidence—not crossed fingers.
I help startups and growing companies release faster with fewer production issues by building effective QA processes and leading testing teams.
✅6+ Years of QA Experience and more than 15 completed long-term web and mobile projects
The combined value of products I've worked on exceeds $1M.
I prevent production bugs before your customers find them and ensure every release is stable and predictable.
My main goal - to help companies setup testing processes from the scratch.
Don't fall into the trap, that QA needed on the last step before product launch.
Domains and Products:
- AI tools and features
- Web applications
- Mobile applications
- SaaS Products
- E-commerce (Shopify)
- E-learning/ Edtech
- Fintech
- Medical
Test Management tools that I worked with :
Jira, Trello, TestRail, Xray, Zephyr, TestPad, Asana, Monday, Clickup and more
Web Testing
Regression Testing
Functional Testing
Mobile App Testing
Test Management
Integration Testing
Software Testing
Smoke Testing
Quality Assurance
Bug Reports
Cross-Browser Testing
QA Management
Usability Testing
QA Testing
GUI Testing
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