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⚡ I am a QA Automation Engineer and Software QA specialist helping startups and product teams speed up slow release cycles and deliver high-quality, bug-free releases. Through structured manual testing, functional testing, and regression testing, I help businesses reduce manual testing time by up to 70%, save $5K+ in manual QA costs monthly, and build a software testing process that scales with the product instead of becoming a bottleneck. 📈 Recent results ✅ Cut the bug count by 63% in a single month by introducing test metrics and reshaping the SDLC process as part of broader QA engineering best practices ✅ Automated regression testing freed up 80+ QA hours per month and eliminated $5K+ in recurring manual testing costs ✅ Structured API testing and performance testing caught critical load issues two weeks before a major product launch 🔍 How I work I start with software testing across web, mobile, and API layers - web testing, mobile QA, and API testing - this is where edge cases and business-logic gaps actually get found, before anything gets automated. Every engagement begins with test case design: mapping critical user flows, defining coverage priorities, and identifying the highest-risk areas of the product first. Once manual coverage is solid, I build QA automation frameworks using Cypress, Selenium, Playwright, Appium, and WebdriverIO, wired directly into CI/CD so tests run on every deploy instead of sitting unused in a repo. I also work extensively with Postman for API testing automation, and with Jira for structured bug reports and defect tracking throughout the release cycle. 🤖 Examples from recent projects 🔄 A hybrid mobile framework (WebdriverIO + Appium) that cut regression testing time by 70% and stabilized flaky test runs across iOS and Android ⚡ A web automation suite (Playwright/Cypress) covering 90%+ of core user flows, which brought hotfixes down by 50% 🚀 An API test suite (Postman + automation) validating 1000+ endpoints, cutting backend QA time by 60% 📊 A performance testing pass on a high-traffic checkout flow that surfaced bottlenecks invisible to functional tests alone 💼 Beyond writing tests I set up the surrounding QA infrastructure: test plans, documentation, coverage and defect metrics, bug report templates, and close collaboration with developers and PMs so testing shifts left instead of blocking releases. I've supported both early-stage products building their first QA process from zero, and established SaaS platforms untangling years of accumulated regression testing debt. 🛠 Tools & stack: Cypress, Selenium, Playwright, Appium, WebdriverIO, Postman, Jira - across web testing, mobile QA, and API testing, covering both manual testing and full QA automation pipelines. If you need someone to build reliable software QA - from scratch or on top of an existing mess - let's talk about your release process and where the biggest risk is right now

Full Stack Developer | 5M software End-Users Impacted | $200K+ Total Earnings | Expert-Vetted (Top 1% Upwork) | 31 Projects | 100% Job Success | 12+ Years on Upwork | 5339+ Hours Worked | TOP RATED PLUS – Top 3% of companies | 16+ Countries Covered 🙈 “Can we just quickly fix this?” 🙊 “It’s probably just a small change.” 🙉 “Let’s ship first and think later.” I am a CEO and Business Manager at Peppernode. I create systems where architecture and decisions matter because mistakes cost more than doing it right. Call me Illia. 🏆 MY ACHIEVEMENTS: 15+ years and 30+ successful products as a Full Stack Developer, delivering SaaS platforms, MVPs, AI-powered solutions, scalable Web Applications; 12K+ dental professionals and 20K+ healthcare users supported through Healthcare Web Applications and HIPAA-compliant platforms built as a React Developer; 35–45% faster feature delivery, improved application stability, and scalable SaaS platforms built as a React Full Stack Developer; 20–30% higher user engagement as a React Developer, building web applications used by 5M+ end users worldwide. React Native App Developer delivering cross-platform mobile apps. Python Developer building scalable backend systems and APIs for SaaS products; 31 successful projects delivered to businesses across 16+ countries, serving more than 5M+ end users worldwide; 100% Job Success, $200K+ earned, and 5,339+ hours worked on Upwork, with proven experience designing scalable applications, validating product strategies, and making the right technical decisions from day one. 🚀 SaaS Development As a Full Stack Developer React, I build 30+ modern SaaS platforms with React, Python, Firebase, and scalable architectures. As a React Developer Firebase, I've delivered 20+ SaaS projects, building web applications with connected frontend and backend systems. 📱 React Native App Development As a React Native Developer and React Native App Developer, I build cross-platform applications for iOS and Android. I've delivered 20+ React Native Mobile solutions for startups and established businesses, focusing on performance, reliability, and long-term scalability. As a React Native Developer Expo specialist, I take products from MVP to production, building intuitive user experiences with clean, scalable codebases. As a React Native App Developer, I've built mobile applications used by businesses in 10+ countries. As a Full Stack Developer React Native and Mobile Developer, I've contributed to 20+ mobile products, building connected mobile ecosystems powered by scalable backend services. My work includes React Native, Expo, mobile MVP development, enterprise applications, API integrations, authentication, App Store and Google Play releases, performance optimization, and long-term product support. 🍽 Restaurant Ordering Systems As a Full Stack Developer React, I've built restaurant ordering systems serving thousands of daily users, helping restaurants automate ordering and payments. My solutions have improved operational efficiency by an average of 32% through workflow automation, POS integrations, and real-time order management. As a React Native Mobile Developer, I've developed customer and staff applications that streamline restaurant workflows. As a React Developer and Python Developer, I build reliable restaurant platforms with scalable architectures, secure payment integrations, POS connectivity, inventory synchronization, cloud-based backend services, and high-performance APIs. 📌 Existing Product Modernization As a Full Stack Developer React, I've modernized 20+ existing applications, refactoring unstable codebases, reducing technical debt, and expanding functionality without sacrificing maintainability. 🤖 AI Integrations As a Full Stack Developer AI, I've built 20+ AI integrations using OpenAI API, Gemini, and LangChain, helping businesses add intelligent capabilities. My work includes AI-powered features, conversational chat interfaces, workflow automation, RAG pipelines, AI agents, prompt engineering, and custom LLM integrations that improve productivity and user experience. 🔧 Tech Stack Every successful product starts with discovery, business analysis, architecture, and product strategy. As a Full Stack Developer React Node and Python Full Stack Developer, I've delivered 31 production-ready software products using modern web echnologies. My frontend stack includes React, React Native, Expo, TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS, Next.js As a Python Full Stack Developer Flask specialist, I build scalable backend systems for 5M+ users with Python, FastAPI, Django, Node.js, REST APIs, PostgreSQL, MySQL, Firebase Looking for a React Developer, React Native Developer, Full Stack Developer React Node, or Python Full Stack Developer to build your next SaaS platform, web application, mobile app?

AWS Certified Solutions Architect – Associate | DevOps Engineer with Strong CI/CD & Infrastructure as Code Expertise I am transitioning my focus to hands-on DevOps engineering, leveraging my extensive experience designing, building, and maintaining cloud-native infrastructure and automated pipelines on AWS. With a proven track record of architecting scalable, reliable CI/CD systems and testing environments, I’m eager to take on more DevOps-focused projects—delivering infrastructure as code, cloud automation, container orchestration, and performance optimisation. Key achievements and expertise: • Designed and implemented AWS-based infrastructure using Terraform for provisioning and managing resources (VPC, EC2, RDS, S3, Lambda, ECS/EKS clusters). • Built and maintained robust CI/CD pipelines with Jenkins, ArgoCD, and GitHub Actions, enabling pipeline-driven test execution and automated deployments. • Automated configuration management and infrastructure deployment with Ansible and Chef across multi-environment setups. • Architected self-service performance and load testing platforms (Gatling, JMeter, WebPageTest) integrated into CI/CD workflows. • Developed supporting services for testing and operations: test data generation, event messaging verification, and secure backend/database access. • Introduced AI-enhanced testing and automation solutions organization-wide. • Hands-on experience with containerization (Docker) and orchestration (Kubernetes basics via EKS/ArgoCD). • Proficient in scripting and backend development (Python, Bash, Node.js, Java) for custom tooling and automation. Tools & Technologies: • Cloud: AWS (Certified Solutions Architect Associate), EC2, ECS/EKS, RDS, S3, Lambda • IaC: Terraform (primary), CloudFormation • Configuration: Ansible, Chef • CI/CD: Jenkins, ArgoCD, GitHub Actions • Monitoring & Testing: Gatling, JMeter, WebPageTest, Selenium, Playwright, Appium • Scripting: Python, Bash, Node.js • Project Management: Jira, Trello I’m particularly excited about opportunities involving AWS architecture, Terraform-based infrastructure, CI/CD optimization, Kubernetes deployments, and cloud cost/performance tuning. Ready to bring both strategic insight from team leadership and deep hands-on DevOps delivery to your projects. Let’s discuss how I can help streamline your infrastructure and pipelines!

✅ READY TO START ASAP 🏆 QA AUTOMATION ENGINEER | 3+ years| PLAYWRIGHT SPECIALIST | DRIVING PRODUCT QUALITY WITH AI TESTING Hi, I’m Lina, a Senior QA Automation Engineer with deep expertise in Playwright. I team up with fast-scaling tech companies across the US and Europe to replace sluggish manual QA processes with highly efficient, automated pipelines. My focus is on removing release bottlenecks so your team can ship faster, scale securely, and deploy to production with zero risk. ✔️ QA Automation Engineering: Re-architecting legacy test suites into lightning-fast, highly resilient CI/CD pipelines leveraging scalable Playwright frameworks and uncompromising quality gates. ✔️ AI-Powered QA Strategies: Integrating AI-driven testing agents within robust Playwright environments to optimize coverage and secure complex, non-linear workflows where standard automation falls short. ✔️ Quality-Driven Mindset: Enforcing a zero-noise testing standard. I wipe out flaky tests using Playwright, guaranteeing absolute build reliability for developers and sustaining elite product quality. As a dedicated QA specialist, my focus is on engineering modern testing ecosystems with Playwright that seamlessly bridge the gap between agile development and flawless end-user experiences. Leveraging my background in test automation, I architect robust, production-ready Playwright frameworks from the ground up. I started my path in tech with a deep interest in software quality. Early in my career, I worked as a manual tester, which taught me the tester's mindset - the ability to find edge cases and understand user pain points. This foundation makes me a better Playwright specialist today: I don't just automate scripts; I automate the most impactful scenarios for QA testing. Over the last 3 years, I have evolved into a proficient QA Automation Engineer, leading QA testing efforts for complex web and mobile platforms with a focus on stable Playwright pipelines. WHAT I HELP WITH: 1️⃣. Web & Mobile Automation Architecture I build test suites from scratch using Playwright, WebDriverIO and Appium, focusing on Page Object Model (POM) for maintainability. As a QA testing specialist, I specialize in: ● Building robust suites from scratch with Playwright, WebDriverIO and Appium. ● Advanced UI automation and QA testing with Playwright (JavaScript/TypeScript). ● Modern, fast, and reliable QA testing with Cypress and Playwright. ● Integration with CI/CD tools like Jenkins, GitHub Actions, and GitLab CI. I work as a qa tester ensuring that both web and mobile interfaces function perfectly. 2️⃣. Technical Stack & Market-Leading Tools As a technical automation engineer, I leverage a modern stack for QA testing that clients look for most: ● Frameworks: Playwright, WebDriverIO, Appium, Mocha, Jasmine. ● API Testing: Postman, Axios, Playwright API testing for robust backend validation. ● Infrastructure & DevOps: Docker, Jenkins, Git, BrowserStack, SauceLabs. ● Mobile Testing: Appium Inspector, Appium Device Farm, Xcode/Android Studio. ● Scripting: Python automation, JavaScript/TypeScript, and SQL for QA testing database verification. This allows me to support developers with clear, actionable Playwright data and maintain high-speed delivery. 3️⃣. Quality Assurance Software Strategy I design the QA testing software lifecycle: ● Defining Playwright testing strategies from the ground up for maximum coverage. ● Identifying which parts of the system require QA testing automation for the best ROI. ● Test Management: Using Jira, Zephyr, or TestRail to track QA testing progress. ● Creating professional Playwright reports with Allure for clear visibility of the product state. 4️⃣. Specialized Testing Experience My experience includes QA testing complex systems, including those built on popular CMS platforms. For instance, I have worked as a WordPress developer in the context of QA testing, which helps me understand the internal architecture of such sites. This technical background and Playwright knowledge allow me to identify potential vulnerabilities and architectural flaws much faster than a standard qa tester. 5️⃣. Analytical Testing & Mentoring Even as an automation engineer, I recognize the value of a solid manual QA testing foundation. I often combine my Playwright work with: ● High-level exploratory QA testing to find "hidden" logic bugs. ● Mobile app testing across various physical devices and emulators. ● Mentoring any manual tester on the team to help them transition to Playwright and QA testing. 6️⃣. Performance & Maintenance ● Playwright suite optimization to reduce execution time. ● Maintaining and updating existing POM structures to match UI changes. ● API QA testing to ensure backend stability WHY CLIENTS TRUST ME: ✔️ 3+ years of focused experience as a QA Automation Engineer in QA testing. ✔️ Expert in Playwright, WebDriverIO, Appium, Selenium, Cypress, and Postman. ✔️ Proven track record in building Playwright frameworks

Still searching for an experienced QA Tester, QA Engineer, Security Engineer, or Penetration Tester? Let’s save your time and talk 😉 I’m a QA Tester / QA Engineer with 10+ years of experience in manual testing, QA automation, security testing, penetration testing support, and overall product quality assurance across web, mobile, SaaS, fintech, healthcare, cybersecurity, AI/ML, and enterprise platforms. I help teams test faster, release with confidence, automate repetitive testing processes, and catch critical bugs, security risks, and performance issues before they reach real users. My work combines a strong QA mindset with practical Automation, Playwright expertise, API testing experience, and a security-focused approach. I don’t just click through screens and report obvious issues — I analyze how the product behaves, how the system is built, where integrations may fail, and where vulnerabilities may hide. ✅ Tools and Libraries ✔ QA Automation: Playwright, Cypress, Selenium, Appium ✔ API Testing: Postman, REST Assured, Supertest ✔ Security Testing: OWASP ZAP, Burp Suite, DevTools, custom scripts ✔ Performance Testing: JMeter, LoadRunner ✔ CI/CD Integration: GitHub Actions, GitLab CI/CD, Jenkins ✔ Bug Tracking & Test Management: TestRail, Zephyr, Jira, Trello, TestomatIO ✔ Reporting: Allure, Mochawesome ✔ Accessibility Testing: axe-core, Lighthouse, manual accessibility review ✔ Version Control: Git, GitHub, GitLab, Bitbucket ✅ Certifications and Experience 📌 ISTQB Certified QA Tester — strong foundation in QA methodologies, structured test design, test planning, test execution, and quality processes. 📌 Security-Focused QA Experience — practical experience with security QA testing, penetration testing support, vulnerability validation, OWASP-based checks, and secure product delivery. 📌 Domain Experience — Fintech, Cybersecurity, Healthcare, Marketing, Construction, Telecommunications, Real Estate, AI/ML, Logistics, E-commerce, SaaS, and 20+ other industries. 📌 QA Leadership — mentoring junior testers, building QA automation workflows, improving test strategies, preparing detailed test plans, and setting up scalable QA processes for complex products. 📌 Automation Expertise — hands-on experience building automation frameworks, especially with Playwright, Cypress, Selenium, and Appium, to support fast and stable product releases. ✅ What I’ve Been Responsible For as a QA Tester / QA Engineer • Manual QA Tester: validating product flows, business logic, UI behavior, and edge cases • Automation Tester: building stable and maintainable automation frameworks • Playwright Automation Engineer: creating end-to-end test suites and cross-browser automation • API QA Tester: validating endpoints, integrations, authentication, and secure data flow • Security Engineer: identifying risks, testing access control, and supporting safer releases • Penetration Tester: checking web applications for common vulnerabilities and security gaps • Cross-Browser QA Tester: ensuring smooth behavior across browsers, devices, and screen sizes • Accessibility QA Tester: using manual checks and tools like axe-core to support compliance • Mobile QA Tester: full-cycle mobile app test coverage for iOS and Android • Regression QA Tester: protecting existing functionality during new releases • Performance QA Tester: checking speed, load handling, and system stability ✅ How I Can Help Your Team I can help you: • Find critical bugs before your users do • Set up QA automation from scratch • Improve existing Playwright, Cypress, or Selenium tests • Create regression test coverage for fast-moving products • Validate APIs, integrations, and backend logic • Support security testing and penetration testing efforts • Improve release quality and reduce production issues • Build clear QA documentation and test plans • Integrate automated tests into CI/CD pipelines • Make your product more stable, secure, and user-friendly Whether you need a QA Tester, QA Engineer, Automation Tester, Playwright expert, Security Engineer, or Penetration Tester, I can step in and help your team ship with more confidence. Let’s connect and discuss how I can help improve your product quality, QA and automation coverage, and security testing process.

I help companies release stable, high-quality products by combining solid manual testing with modern AI-driven automation. With 5+ years in QA, I’ve worked across web, mobile, and complex platforms where user experience and reliability directly impact revenue. I don’t just “test features” — I identify risk areas, uncover hidden bugs, and improve overall product quality. What I do: • Full-cycle manual testing (functional, regression, exploratory) • Test case design, execution, and maintenance • Bug tracking and clear reporting (Jira, Trello, etc.) • API testing (Postman, Swagger) • Cross-browser & cross-device testing • UI/UX validation and usability feedback AI-Driven & Automation Approach: • Use AI tools to speed up test creation and coverage • Automate repetitive flows to reduce regression time • Identify edge cases using data-driven and AI-assisted analysis • Support scalable QA processes for growing products Results I focus on: • Fewer production bugs • Faster release cycles • Better user experience • Reduced QA costs through smart automation QA & AI Tools I use: • Test Management: Jira, TestRail, Zephyr • Automation: Playwright, Cypress, Selenium • API Testing: Postman, Swagger • AI QA Tools: ChatGPT, GitHub Copilot (test generation, edge cases, faster coverage) • Performance: JMeter, k6 • Debugging & Monitoring: Chrome DevTools, Sentry, LogRocket • CI/CD: GitHub Actions, GitLab CI • Mobile Testing: BrowserStack, real devices • Databases: MySQL, PostgreSQL (basic validation) I’m comfortable working independently or as part of a team, and I always aim to bring clear communication, fast feedback, and real value to the project.