Daryna S.

👋 𝐇𝐢, 𝐈'𝐦 𝐃𝐚𝐫𝐲𝐧𝐚, 𝐚 𝐒𝐞𝐧𝐢𝐨𝐫 𝐐𝐀 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 𝐰𝐢𝐭𝐡 𝟓+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞. My experience includes Manual Testing, QA Automation, API Testing, Web Testing, Mobile App Testing, payment systems, Web3 products, AI features, and third-party integrations. I help teams with the Last Mile of software development: thoroughly testing products built fast with AI-assisted development, vibe coding, or Spec-Driven Development before they reach real users. I test business logic, integrations, edge cases, APIs, payments, and user flows to make sure rapidly developed products are stable and production-ready. • 5+ years in Software QA across web, mobile, and API • 100+ production releases tested across web, iOS, and Android • Up to 50% faster regression testing through QA Automation • 150+ high-impact issues caught before production • QA for a №1 Finance iOS app serving 20,000+ users • Up to 3x faster QA delivery with AI-assisted testing and automation 📌 𝐈𝐍𝐃𝐔𝐒𝐓𝐑𝐈𝐄𝐒 FinTech • Payments • Crypto & Web3 • eCommerce • SaaS • B2B Platforms • Sport & Fitness • Healthcare • EdTech • Logistic • HoReCa • Social Media 📌 𝐒𝐄𝐑𝐕𝐈𝐂𝐄𝐒 • Last Mile QA for rapidly developed and AI-built products before production • Manual Testing for new features, regression, and release validation • QA Automation with Playwright, Cypress, Selenium, Appium, and Detox • Web Testing across browsers, responsive layouts, user roles, and edge cases • Mobile App Testing across iOS, Android, devices, permissions, and network conditions • Web3 testing for wallets, crypto transactions, deposits, withdrawals, and failure scenarios • Testing AI features including LLM outputs, chatbots, OCR, recommendations, image generation, and AI workflows • API Testing with Postman, Supertest, and Karate • Functional, smoke, regression, exploratory, integration, usability, and performance testing with k6 • TestRail, Jira, BrowserStack, Chrome DevTools, Android Studio, Xcode, and CI/CD 📌 𝐒𝐄𝐋𝐄𝐂𝐓𝐄𝐃 𝐖𝐎𝐑𝐊 Myntkaup | FinTech & Web3 Tested a web and mobile crypto platform used by 20,000+ users and ranked №1 Finance on the App Store. Covered trading, wallets, crypto deposits and withdrawals, transaction states, biometrics, P&L, live prices, reports, and blockchain flows. Flymingo | Travel Marketplace Tested web and mobile experiences for passenger, pilot, and company roles, including scheduling, Smart Check-In, split payments, Apple Pay, Google Pay, maps, notifications, camera flows, permissions, and real-device behavior. Creativio | AI SaaS Tested an AI image platform across background removal, scene generation, inpainting, upscaling, image-to-text, AI model switching, and paid flows. Covered output consistency, edge cases, integrations, regression, and production readiness. 💡 𝐇𝐄𝐑𝐄'𝐒 𝐖𝐇𝐄𝐑𝐄 𝐈 𝐂𝐀𝐍 𝐇𝐄𝐋𝐏 I usually help clients when: • a product was built quickly and needs thorough testing before launch • releases keep shipping with avoidable bugs • regression takes too long before every release • Web Testing is inconsistent across browsers, roles, or responsive states • Mobile App Testing misses device-specific, permission, or network issues • FinTech or Web3 products need reliable testing of payments, wallets, transactions, and failure states • AI features need structured validation across inputs, edge cases, and integrations • QA Automation is flaky, incomplete, or missing • you need 1 Manual Tester who can also build and maintain automation I help teams build reliable QA processes, improve release confidence, and catch critical issues before production across Web Testing, Mobile App Testing, API Testing, regression, release validation, and QA Automation. 🚀 𝐋𝐄𝐓’𝐒 𝐓𝐀𝐋𝐊 Send me your product, QA setup, or release scope, and I'll review the testing process, identify potential gaps, and recommend the most practical QA approach. tester, software testing qa automation project manager qa automation engineer qa engineering software qa engineer manual qa engineer qa engineer qa analyst qa tester qa python qa manual qa software manual qa software qa manual qa tester manual software tester qa manual tester manual tester manual testing qa python developer senior qa engineer automation tester manual design manual writer user manual training manual qa automation tester automation engineer cypress playwright qa mobile app qa cypress mobile app testing mobile app tester mobile app design mobile app explainer video mobile app development mobile app developer react native beta tester customer testimonials quality assurance engineer mobile testing ux, web application testing web testing web tester api testing postman karate, app testing api tester api technical writer cypress automation cypress testing cypress qa playwright automation playwright python typescript playwriting quality assurance quality assurance tester software quality assurance quality assurance analyst customer service, AI