Hire the Best A/B Testing Specialists

40+ Hours Available Per Week As a Top Rated Plus full-time freelancer on Upwork with over 8+ years of expertise in Software Quality Assurance, I specialize in ensuring your applications are bug-free and deliver exceptional user experiences, backed by over 225+ 5-star ratings ⭐ from satisfied clients! 🚀 With 26,800+ hours work on Upwork, I have successfully tested 310+ Android and iOS mobile applications and over 120+ web apps, helping clients achieve seamless product launches and exceptional performance. My experience includes collaborating with renowned organizations like UNICEF and leading brands like Samsung, ensuring their software meets the highest quality standards. I test applications across all types of network conditions, including 3G, 4G, and 5G, as well as high-speed connections (1Gbps) and low-speed scenarios down to kilobits per second (kbps), ensuring optimal performance and usability under real-world conditions. Key Achievements: 🏆 Top Rated Plus freelancer with 8+ years of professional QA experience ⭐ 225+ 5-star reviews from satisfied clients 📌 300+ Upwork projects successfully completed 🤖 10+ AI Voice & Chat Assistant platforms tested (Retell, Bland, Vapi, Wishpond AI, Senior Care AI, etc.) 🚀 Tested and launched 70+ startup products successfully to the store ⏰ Worked over 26,800+ hours on Upwork. 📱 Android: Samsung Galaxy S24 Ultra, Samsung Galaxy S21 Plus, Poco X4, RealMe GT Master Edition, OnePlus 9, OnePlus 8T, Samsung A18 📱 iOS: iPhone 16 Pro Max, iPhone 14 Pro Max, iPhone 14 Plus, iPhone 13 Pro Max, iPhone 11, iPhone XR 💻 Desktop: MacBook Air, HP Pavilion X360, RealMe Book, Lenovo ThinkPad, Samsung Galaxy Book 4 & 5 Manual QA Skills: • AI Model Performance Testing • AI Agent Functional & Usability Testing • Conversational AI & Chatbot Testing • Requirement Analysis • Test Case Design & Execution • Defect Reporting & Management • SEO Testing • Functional Testing • End-to-End Testing • Integration Testing • Exploratory Testing • PWA Testing (Progressive Web App Validation) • Reverse Testing – Test with Invalid/Unexpected inputs to ensure robust error handling & stability • Regression Testing • Cross-Browser Testing • Mobile App Testing (iOS & Android) • Usability Testing • UI/UX Testing • Payment Gateway Testing • System Testing & Acceptance Testing • API Testing (Postman, Swagger) • Performance Testing (Basic manual approach using tools) 🤖 AI Testing Expertise • AI Model Performance & Response Accuracy Validation • Conversational Flow, NLP Intent & Entity Testing • Voice Agent Quality Testing (ASR, TTS, Latency, Filler Word Detection) • Knowledge-Base and Prompt Flow QA • Context Retention & Session Continuity Testing • Multi-Agent Coordination and Voice Call Testing • Real-World AI App Testing (Retell, Bland, Vapi, ElevenLabs, Play.ht, Wishpond AI, Senior Care AI) Tools & Platforms: • Bug Tracking & Management: JIRA, Trello, Asana, Linear, ScribeHow • Collaboration & Reporting: Google Sheets, Notion, Slack • Testing Platforms: BrowserStack, physical devices • Performance & Analytics Tools: GTmetrix, SimilarWeb • Documentation: Test Plans, Test Cases, Checklists, FRS, User Manuals Domains Expertise: • eCommerce (Shopify, WooCommerce) • SaaS Applications • Healthcare • Mobile Applications • Insurance • Banking & Financial Services • Gaming • Point of Sale (POS) • ERP Systems • OpenAI Integration With a strong commitment to delivering error-free, high-performing software, I aim to exceed quality expectations and provide products that users love. I am available for flexible timings across any time zone and dedicated to helping you bring your software to the highest standards of performance and user satisfaction. Why Choose Me? ✔️ Proven expertise in Manual QA testing ✔️ Comprehensive experience across web and mobile platforms ✔️ Skilled in test documentation, ensuring a structured and repeatable testing process ✔️ Ability to identify critical defects and edge cases ✔️ Adaptable to both Agile and Waterfall methodologies ✔️ Flexible work hours to meet your project needs ✔️ Expert in crawling websites to ensure flawless functionality and SEO perfection -------------------------------------------------------------------------------------------------------- Related Keywords: Manual Testing, API Testing, Web Testing, Mobile App Testing, Regression Testing, Cross-Browser Testing, Test Case Design, Jira, UI/UX Testing, End-to-End Testing, Functional Testing, Bug Reports, Quality Assurance, Payment Gateway Testing, iOS Testing, Android Testing, Test Plan, Usability Testing, User Testing, Software Testing, Manual QA, AI Testing, Chatbot Testing, Voice AI Testing, NLP Testing, Mobile App QA, Conversational AI, AI Model Evaluation, Reverse Testing, PWA Testing, Progressive Web App Validation, AI Apps Testing, Progressive Web Application, OpenAI, AI Apps, ChatGPT, Sora, Gemini, Generative AI, Chatbot

Conversion rate optimization for Shopify Plus brands, DTC and B2B. I find where your store leaks revenue, then fix it. A luxury watch brand: sales up 144%. A haircare brand: subscription revenue tripled. If you're getting traffic but not sales, that's the gap I close, with A/B testing and real conversion data behind every change. This is conversion rate optimization done with data, not opinions. Most Shopify Plus stores lose 30 to 50 percent of their ad spend to friction in the funnel. I fix that by running CRO strategy and the Shopify build as one job, not three handoffs, so the whole store works toward one thing: more revenue per visitor. Top 1 percent Expert on Upwork. 10+ years of Shopify experience. Clients across the US, UK, UAE, and Australia. PROOF OF IMPACT → 200+ percent average conversion rate lift through data-driven redesigns. → 144 percent sales increase for a luxury watch DTC brand. → 500K extra revenue in 60 days for a B2B industrial platform. → 3.75 percent sitewide conversion rate for a haircare subscription brand. INDUSTRIES I SPECIALIZE IN Luxury and premium brands · Health, wellness, and recovery devices · Haircare, skincare, and beauty DTC · Supplements and nutraceuticals · B2B industrial and wholesale · Fitness and subscription ecommerce · Automotive parts · Footwear and apparel. COMMON PROBLEMS I SOLVE "Our store looks great but doesn't convert." I use heuristic analysis and CRO data to fix the gap between how a store looks and how it sells. "We need recurring revenue, not one-time sales." I build custom subscription flows with Recharge and Appstle to steady your monthly income. "We're tired of managing 5 different freelancers." You get one point of accountability instead of five. I own the strategy and the full Shopify build, design included. MY PROCESS Discovery and data audit I find your conversion killers with Convert, Hotjar, GA4, Triple Whale, and heatmap analysis, then map a cleaner path to purchase that lifts AOV and ROAS. Strategic UX/UI design Custom Figma designs made to sell. Mobile-first, at the level luxury and enterprise brands expect. Custom development and subscriptions Shopify Plus Liquid development, Online Store 2.0, Recharge and Appstle subscriptions, and migrations from WordPress, WooCommerce, or Magento. AI-assisted, human-led I use AI to speed up research and reporting, but every recommendation is mine, tested with Convert or VWO against real conversion data. WHAT CLIENTS SAY "Shameel was incredible. Clearly communicating throughout to deliver outcomes far over and above the scope. A true professional. 10/10 recommend." → Premium Menswear Brand, CRO and UX Audit "33 percent increase in revenue, 10 percent higher AOV, and more return customers. He never makes promises he can't deliver on. GREAT PARTNER." → Gail S., Founder and CEO "Great support and lots of insight on how to improve our conversion. I look forward to continue working with Shameel." → Landing Page CRO Client WHO IS THIS FOR → Shopify Plus brands that want to fix conversions or clear technical debt. → Enterprise migrations from WordPress or Magento to Shopify. → High-scale DTC launches that need a store built to grow. If that sounds like your store, let's talk. I work with brands that care about quality and long-term ROI. Click "Invite to Job" or "Hire Now" and let's find your missing revenue. Best, Shameel Nasir Shopify Plus CRO Specialist | Top 1%, Expert-Vetted 10+ Years | 110+ Projects | 100% Job Success

Top Rated Senior Quality Assurance Engineer (SQAE) | Manual Testing | API Testing | Web & Mobile App Testing | Software Quality Assurance I help startups, SaaS companies, and businesses release reliable software by finding critical bugs, improving user experience, and ensuring their applications work smoothly before reaching customers. With 7+ years of experience in Software Quality Assurance, I specialize in Manual Testing, Functional Testing, Regression Testing, API Testing, Web Application Testing, Mobile App Testing, and End-to-End QA Testing, Database Testing. I have tested complex applications including SaaS platforms, CRM/ERP systems, E-commerce platforms, FinTech applications, AI-powered products, Chatbots, Voice AI systems, Payment Gateways, and enterprise software solutions. My focus is not just finding bugs I provide clear, actionable QA insights that help development teams improve product quality, reduce production issues, and deliver better customer experiences. My QA Testing Expertise: ✅ Manual Software Testing ✅ Functional & Regression Testing ✅ Exploratory Testing ✅ Smoke & Sanity Testing ✅ End-to-End Testing ✅ User Acceptance Testing (UAT) ✅ UI/UX & Usability Testing ✅ Cross-Browser Testing ✅ Cross-Device Testing ✅ Web Application Testing ✅ Mobile App Testing (Android & iOS) ✅ SaaS Application Testing API & Backend Testing: ✅ REST API Testing ✅ Postman API Testing ✅ Swagger Testing ✅ API Response Validation ✅ Authentication & Authorization Testing ✅ JSON Data Validation ✅ Database & SQL Testing ✅ API Integration Testing Industries I Have Tested: ✅ SaaS Products ✅ CRM & ERP Applications ✅ E-commerce Platforms ✅ Shopify & WooCommerce Websites ✅ Marketplace Applications ✅ FinTech & Payment Systems ✅ Healthcare Applications ✅ AI Applications & Chatbots ✅ Voice AI Products Testing Tools: Bug Tracking: Jira, Linear, Trello, ClickUp, YouTrack, Notion Testing: Postman, Swagger, JMeter, BrowserStack, Chrome DevTools, SQL Documentation: Google Sheets, Test Management Tools, Slack, Microsoft Teams What You Will Get: ✔ Detailed bug reports with clear reproduction steps ✔ Screenshots and video evidence ✔ Severity and priority analysis ✔ Test case creation and execution ✔ Regression testing after fixes ✔ API testing reports ✔ QA documentation ✔ Usability improvement suggestions ✔ Clear communication and regular updates I help teams build stable, user-friendly, and production-ready software through structured QA processes and real-world testing experience. Let’s connect and improve your product quality. Skills: QA Engineer, Manual QA Tester, Software Testing, Web Testing, Mobile Testing, API Testing, Postman, REST API, Functional Testing, Regression Testing, UAT Testing, UI Testing, UX Testing, SaaS Testing, CRM Testing, ERP Testing, AI Testing, Chatbot Testing, Voice AI Testing, FinTech Testing, Payment Testing, Database Testing, SQL Testing, Performance Testing, JMeter, Bug Reporting, Test Case Design, Defect Management, Release Testing.

Instantly.ai Expert, Lemlist, Woodpecker, Apollo, Instantly, Lemlist, Smartlead, Clay, DNS, DMARC, DKIM, SPF, MX, Warmbox, Gmail Postmaster, Cold Email Expert, Cold Email Outreach Expert, Cold Email Marketing Expert, Email Deliverability ✅ If your cold emails aren’t landing in the inbox, your infrastructure isn’t optimized. ✔ I help businesses build powerful cold email systems that are technically sound, fully authenticated, and designed to scale safely. I specialize in cold email infrastructure, deliverability optimization, and outreach automation — ensuring campaigns perform consistently without risking domain reputation. ✔ Most campaigns fail because of poor backend setup, not copy. I configure complete sending environments, including domain setup, DNS records, SPF, DKIM, DMARC authentication, MX routing, inbox provisioning, SMTP/IMAP configuration, tracking domains, warmup strategy, and sending rotation systems. ✅ Services I Deliver: ✔ Cold email infrastructure setup ✔ Deliverability repair & spam fixes ✔ Domain reputation protection ✔ Outreach automation systems ✔ Campaign launch + optimization ✔ Email warmup & tracking ✔ DNS troubleshooting & correction I don’t just set up tools — I build long-term outreach systems. If you want a cold email system built properly from day one, I can help. ✅ 𝐖𝐡𝐚𝐭 𝐒𝐞𝐭𝐬 𝐌𝐞 𝐀𝐩𝐚𝐫𝐭: • Deep expertise in Instantly Email, Lemlist, SmartLead, and many others • Comprehensive understanding of email deliverability • Technical mastery of DNS configurations • Strategic approach to email warmup and campaign management ✅ 𝐂𝐨𝐫𝐞 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬: ✔ Complete Instantly Cold Email Infrastructure Setup and other Tools ( SmartLead, Lemlist, RichInbox) - Google Workspace, Microsoft 365, and Zoho mail configuration - Advanced DNS management (SPF, DMARC, DKIM) - Custom domain tracking implementation - Email warmup strategy development ✔ Technical Optimization - Deliverability troubleshooting - DNS record verification and correction - SMTP/IMAP configuration - Multi-tool integration setup ✅ 𝐕𝐚𝐥𝐮𝐞-𝐀𝐝𝐝𝐞𝐝 𝐁𝐞𝐧𝐞𝐟𝐢𝐭𝐬: • Complimentary Instantly.ai platform walkthrough • Access to proven email template resources • Ongoing technical support • Clear communication and quick turnaround I focus exclusively on technical implementation and infrastructure optimization - ensuring your email campaigns have the strongest possible foundation for success. ✅ Skills: Cold Email Marketing Strategy Cold Email Campaign Management Cold Marketing Automation Cold Email Outreach Cold Email Deliverability Optimization Cold Email Automation & Flows SPF, DKIM, DMARC Setup Lead Nurturing Sequences Cold Email Campaign A/B Testing Email List Management ✅ Tools I Use to Deliver Excellence:- - Email Deliverability: MX Toolbox, SendGrid, Mailgun, Postmark, SparkPost - Cold Email Outreach: Apollo, Lemlist, Instantly, Reply, Mailshake - LinkedIn Automation: Sales Navigator ✅ Email Marketing services: - Account setup & Optimisation - Email Copywriting and setup - Cold Email marketing campaigns - Cold Email Automation - Cold Email Flows setup - Analytics & Reporting ✅ Keywords: - Copywriting - Cold Email Marketing Automation - Relationship Management - Cold Email Management - Mass Email - Bulk Email - Cold Email - Lead Nurturing - Cold Email Deliverability - Cold Email Marketing - Cold Email Campaigns - Fractional Marketing - Landing Page Optimization - High-Level Solutions - DELIVERABILITY - Cold Email Automation - Omnichannel Automation - Cold Email Marketing Automation Strategy - Automated Workflow - Marketing Automation Software - Clickfunnel Optimization - Email Marketing - Email Marketing Specialist - Email Marketing Consultant - Email Marketing Expert - Online Marketing Expert - Bulk Email Design - Email Blast Design - Email Marketing Automation - Email Template Management - Long-tail keywords: - Responsive Email Template Development ✅ Cold Emailing Platforms: - Snov - Apollo - Woodpecker - Instantly - Lemlist - SmartLead - Hunter - Reply - Mailshake - Gmass - Vocus - Outreach #Instantly Expert #Lemlist #Woodpecker #Apollo #Lemlist #Smartlead #Clay #DNS #DMARC #DKIM #SPF #MX #Instantly #Warmbox #ClickMagick #GmailPostmaster #ColdEmailExpert #ColdEmailOutreachExpert #EmailDeliverability #ColdEmailOutreachExpert #ColdEmailCampaignSpecialist #ColdEmailCampaignManager #B2BColdEmailExpert #ColdEmailDeliverabilityExpert #ColdEmailCampaignSetupExpert #ColdEmailManagementExpert #SetupDKIM/SPF/DMARC&ConfigurationExpert #Instantly#CampaignManager #ColdEmailCampaignManager #ColdEmailSetupExpert #ColdEmailDomainsSetup #Warmups #InstantlyAccountSetupPro #SmartleadAccountSetupPro #ColdEmailDeliveryExpert #ColdEmailOutreachExpert

Launching a SaaS platform, mobile app, AI product, or website? I help startups, founders, and product teams uncover bugs, usability issues, confusing workflows, and hidden friction before they impact real users. Unlike traditional QA testers who focus only on finding bugs, I combine quality assurance, usability testing, and product thinking to help improve both product quality and user experience. Over the past several years, I have tested SaaS platforms, mobile applications, fintech products, healthcare systems, HR platforms, AI-powered tools, and marketplace solutions. My goal is not simply to report issues. My goal is to help you launch a product that users trust, understand, and enjoy using. ━━━━━━━━━━━━━━ WHAT I CAN HELP WITH ✓ Manual QA Testing • Functional Testing • Regression Testing • Exploratory Testing • End-to-End User Flow Validation • Smoke Testing ✓ Mobile App Testing • iOS Testing • Android Testing • App Store & Play Store User Experience Review • Cross-Device Validation • Responsive Design Testing ✓ Website & SaaS Testing • Account Registration Flows • Checkout & Payment Processes • Dashboard Testing • Admin Panel Validation • Permission & Role Testing ✓ UX & Usability Audits • User Journey Analysis • Friction Point Identification • Navigation Review • Conversion Funnel Review • UI Consistency Validation • Accessibility Feedback ✓ Product Audits • First-Time User Experience Review • Onboarding Evaluation • Feature Discoverability Analysis • Product Improvement Recommendations • Competitor Benchmarking ✓ API Testing • Postman Testing • Endpoint Validation • Response Verification • Error Handling Review ━━━━━━━━━━━━━━ DELIVERABLES Every project can include: • Detailed Bug Reports • Screenshots & Screen Recordings • Reproduction Steps • Expected vs Actual Results • Severity & Priority Classification • UX Improvement Suggestions • Product Recommendations • Final QA Summary Report ━━━━━━━━━━━━━━ TOOLS Postman Jira ClickUp Trello Notion Figma Chrome DevTools Browser Developer Tools ━━━━━━━━━━━━━━ RECENT PROJECT TYPES • SaaS Platforms • AI Applications • Healthcare Systems • HR Platforms • Fintech Products • Vendor Marketplaces • Mobile Applications • Startup MVPs ━━━━━━━━━━━━━━ WHY CLIENTS WORK WITH ME ✓ Detail-Oriented Testing ✓ Clear Communication ✓ Actionable Feedback ✓ Product-Oriented Thinking ✓ Fast Turnaround ✓ Reliable Reporting Based in the Netherlands and available for both one-time audits and ongoing QA support. Let's find the issues before your users do.

Creating seamless digital experiences that prioritize user satisfaction 🗽 𝐎𝐯𝐞𝐫 7+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 🤝 Successfully Completed 250+ projects 🚀 Certified Landing Page Designer | CRO Specialist | UI/UX Expert 🏆 Top-Rated Freelancer on Upwork 💪 Landing Page | Webflow | Unbounce | Instapage | HubSpot | WordPress | Framer | Shopify | High-Converting Funnels | Hubspot I am a conversion-focused Landing Page Designer and UI/UX Expert with years of experience in designing high-performing, sales-driven landing pages that maximize ROI and increase lead generation. Why Work With Me? ✅ Results-Driven Designs: Every landing page I create is optimized for higher conversion rates and seamless user experience. ✅ End-to-End Service: I handle strategy, UI/UX design, development, and A/B testing—so you don’t need extra specialists. ✅ Industry Experience: I've worked with SaaS, eCommerce, real estate, finance, coaching, tech startups, healthcare, and more to create impactful digital experiences. What Sets Me Apart? Most designers focus only on aesthetics, but I integrate CRO, UX best practices, persuasive copywriting, and strategic content placement to ensure that your landing pages convert traffic into paying customers. My approach guarantees: ✔️ A stunning design that aligns with your brand identity ✔️ Data-driven A/B-tested layouts for maximum conversions ✔️ SEO & performance optimization to rank higher and load faster ✔️ Persuasive copywriting to engage users and boost sign-ups ✔️ A seamless launch with ongoing support if needed My Services ✔ Premium eCommerce landing page creation and development ✔ Lead Generation Landing Pages ✔ Click Through Landing Pages ✔ PPC Landing Pages ✔ Subscription Sales Pages ✔ Webinar Registration Landing Pages ✔ eCommerce Sales Pages (Digital and physical products) ✔ App Landing Pages ✔ Website Landing Pages ✔ eCommerce / Crowdfunding Landing Pages ✔ Sales funnel creation ✔ Conversion Centered Sales Page ✔ Shopify Stores/websites ✔ Unbounce Landing page Expert ✔ Leadpages Landing page Expert ✔ Instapage Landing page Expert ✔ UI/UX Design for Websites & Apps ✔ Conversion-Focused Website and App Design ✔ Mobile App UI/UX Design ✔ User-Centered Design for Improved Experience ✔ Responsive Web & Mobile Design ✔ Wireframing & Prototyping for Websites & Apps ✔ Website and App Redesign Platforms I Work On ✅ Webflow Landing Page ✅ Unbounce Landing Page ✅ Instapage Landing Page ✅ Squarespace Landing Page ✅ Wix Landing Page ✅ WordPress Landing Page ✅ Leadpages Landing Page ✅ GoHighLevel Landing Page ✅ ClickFunnels & ClickFunnels 2.0 Landing Page ✅ Shogun | Gem pages Landing Page ✅ Framer | Replo Landing Page ✅ Kajabi | HubSpot | PageFly Landing Page ✅ Shopify Landing Pages ✅ Ecommerce Funnels & Checkout Optimization Tools I Use 🔧 Figma | Adobe XD | Google Optimize | Hotjar | VWO | Zapier Client Love ❤️ "🌟 Highly Recommended! Gunjot delivered a visually stunning, high-converting landing page ahead of schedule! Her attention to detail and proactive suggestions were outstanding. Will hire her again!" "🌟 Gunjot is a talented Landing Page Designer. She created a high-end design for my SaaS software’s landing page with fast development. I will definitely work with her again!" "🌟 Amazing work! Gunjot transformed our brief into a perfect landing page and was very flexible. We will continue working with her!" 📈 Let's Build Something Great Together! I’m passionate about helping businesses increase conversions, improve UX, and boost online revenue. My schedule fills up fast, so send me a message today, and let’s get started on your project! 🔑𝐊𝐄𝐘𝐖𝐎𝐑𝐃𝐒: #ShopifyLandingPage #Shogun #Leadpages #Pagefly #GohighlevelAutomation #GohighlevelFunnel #GohighlevelMigration #GohighlevelChatgptIntegration #High-ConvertingFunnels #GHLCalendarIntegration #AutomatingOnboardingProcesses #GHLMembershipSetup #WorkflowsSetUp #SalesFunnel #CRMSoftware #SalesFunnelBuilder #CustomerRelationshipManagement #LeadGeneration #MarketingAutomation #AutomatedWorkflow #Zapier #ReputationManagement #ShopifyStoreOptimization #B2B #B2C, MarketingAutomationStrategy, SalesOptimizations, ShopifyConversionOptimization, WebsiteAudit, BestMatch, ABTesting, LandingPageOptimization, Hotjar, Mock-up, UserExperienceDesign #WebflowDesignt #WordPressThemeCustomization, WooCommerce,WebflowDesigner, Gempages , GempagesDesigner , Framer, FramerLandingPageExpert, Replo, ReploLandingPage, eCommerceConversionRateOptimization, GoHighLevelAutomations, AutomationExpert, Landing Page Design, CRO, Conversion Rate Optimization, UI/UX Design, Webflow, WordPress, Unbounce Landing page, Instapage, Framer, ClickFunnels, A/B Testing, High-Converting Pages, No-Code Development, Website Design, HubSpot, SaaS Landing Page, Shopify, Lead Generation, Ecommerce Funnels, Persuasive Copywriting, Figma, Adobe, Sales Landing Page, Product Landing page #LandingpageExpert #LandingpageDesigner | Website UI/UX | A/B testing |