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🧪 Senior QA/SQA Engineer | 10+ Years in Manual & Automation Testing 📱 Platforms: Web, Mobile (iOS/Android), Desktop & Mobile Hardware ⚙️ Expertise: Functional, Regression, API, Performance, E2E, Google Play Closed Testing, A/B Testing 🎯 Track Record: 200+ Projects Completed | 30,000+ QA Hours | Product & Web QA Specialist ***************** I help software teams ship faster with fewer bugs through the right mix of automation efficiency, manual testing precision, and AI‑driven testing strategies. With 10+ years in software quality engineering, I have deep expertise across automated, manual, and AI‑augmented testing. I have built automation frameworks from scratch for companies ranging from startups to enterprise, while maintaining strong hands-on manual testing practices for critical user flows and edge cases that automation cannot catch. I also leverage AI tools and LLMs to accelerate test generation, self‑heal flaky tests, and uncover hidden defect patterns. ***************** ✅ WHAT I DELIVER 🏗️ Custom Automation Frameworks — UI (Selenium/Playwright/Appium), API, and white-box testing tailored to your stack 🔍 Strategic Manual Testing — Exploratory testing, user scenario validation, and edge case discovery where human judgment matters most 🤖 AI‑Powered Testing — Intelligent test generation, self‑healing scripts, visual validation with AI, and LLM integration to expand coverage while slashing maintenance 🌐 Website & SaaS Testing — End-to-end validation, cross-browser compatibility, responsive design, user journey testing, and subscription/payment flow verification 🚀 CI/CD Quality Gates — Jenkins/GitHub Actions pipelines that catch defects before they reach production ***************** 📊 RECENT RESULTS ✅ 50%+ reduction in regression testing time through framework optimization ✅ 30% increase in early defect detection via shift-left practices ✅ 40% less test maintenance using AI‑assisted self‑healing and smart locators ✅ Agile transformation leader — guided 5-person QA teams, reducing release cycle from 2 weeks → 3 days ✅ SaaS platform reliability — delivered comprehensive testing ensuring robust subscription flows and multi-tenant data isolation ***************** 🛠️ TECH STACK Java/Kotlin/Python | Selenium/Playwright/Appium/REST Assured | Jenkins/GitHub Actions | Docker | AWS/Azure/GCP | SQL for data validation | LLMs / OpenAI / AI testing assistants ***************** 🎯 DOMAIN EXPERIENCE ✅ Website Testing — Cross-browser (Chrome/Firefox/Safari/Edge) | Responsive design | Accessibility (WCAG) | Performance optimization ✅ SaaS Platforms — Multi-tenant architecture | Subscription/payment flows | Role-based access control | API integration testing | Data security validation ✅ Mobile (Android/iOS) | Web apps | Desktop (Linux/Mac/Windows) | Database migration validation | Hardware-integrated systems ***************** 📬 LET'S CONNECT Available for: Test strategy consulting • Framework architecture • CI/CD setup • SaaS platform testing • Team training • Ongoing QA leadership • AI testing adoption & tooling 👉 Invite me to discuss your quality bottlenecks

I am an experienced Linux administrator. I have 15+ years of experience in Linux system administration and problem-solving. I can troubleshooting all kinds of linux issues, centos migration, centos/ubuntu crash rescue, investigate server performance issue and web server administration. Skills & Deliverables: Cloud Infrastructure & Dedicated VPS Setup (AWS, DigitalOcean, Hetzner, Contabo, Linode etc) Building secure, high-performance servers with proper backup, and automation. Linux Administration(Centos, Ubuntu, Debian, Rocky Linux, Almalinux) Performance optimization, monitoring, troubleshooting, log analysis, and uptime management. Server migration(Centos, Ubuntu, Debian, Rocky Linux, Almalinux) Secure migration of data and app between different servers. Web Server Trouble-shooting Slow server, website troubleshooting and optimization Recurring downtime issue troubleshooting and fix. Centos7 server migration Upgrade centos7 to almalinux 8 or 9. Migrate data&apps from centos7 to Ubuntu/Debian/Rocky/Almalinux Server Upgrade(Centos, Ubuntu, Debian, Rocky Linux, Almalinux) Upgrade ubuntu 14 16 18 20 22 to the latest version. Upgrade Debian , Rocky Linux, Almalinux to the latest version Server rescue(Centos, Ubuntu, Debian, Rocky Linux, Almalinux) Fix linux system crash, file system corruption. Security & Compliance Firewall configuration, access control, TLS/SSL, patching, vulnerability prevention. Backup & Disaster Recovery Strategy Automated backups, retention policies, restore testing, failover planning. Application Hosting & Migration WordPress, Prestashop, Forum app, Node.js, Python apps — smooth migration without downtime. Email Infrastructure & Deliverability Improvement Domain authentication setup (SPF / DKIM / DMARC), inbox placement, fixing spam issues. Why choose me? - Strong skills and extensive experience , can work independently and efficiently , able to fix complex issues - Fast and clear communication, detail and solution oriented - Honest and proactive work ethic

Hello! I'm Haodong Shi, a Linux system administrator with certifications in Red Hat Certified Engineer (RHCE) and Red Hat Certified System Administrator (RHCSA). I hold a degree in Computer Science with a focus on Cloud Computing, and I have practical experience working with Linux servers, Python scripting, and data handling in real-world environments. I specialize in Linux server setup and security, Excel and CSV automation, and custom web scraping scripts using Python. Whether it’s configuring a secure production server or automating tedious tasks, I focus on clean, reliable, and well-documented solutions. ✅ What I can help you with: Deploying and hardening Linux servers (CentOS, RHEL, Ubuntu) Configuring firewall, SSH, SELinux, and troubleshooting system issues Writing Python scripts for Excel/CSV cleanup, transformation, and file automation Building custom web scraping tools for structured data extraction Delivering well-formatted outputs and documentation I take each task seriously — always on time, communicative, and precise with requirements. In recent projects, I've maintained a high success rate and received consistent positive feedback from clients who value both the results and the working experience. Whether you need a quick fix or a dependable long-term collaborator, I'm here to help you get it done right.

Thank you for taking the time to view my profile. I'm a professional electrical engineer with experience in power electronics, digital circuits, analog circuits, and HF RF circuits. My favorite EDA tools are OrCAD or KiCad for schematics capture, Allegro or KiCad for PCB layout, LTspice for analog circuit simulation, Verilog/SystemVerilog/Vivado/ModelSim/Questa for digital and FPGA design, SIMetrix/SIMPLIS for SMPS design, dsPIC33/MPLAB/PowerSmart for digital power design. Still, I have used many other EDA tools under customer/client requests in the past, such as Pspice, TINA-TI, ADS, Quartus Prime, etc. I'm also a professional programmer with experience in PC BIOS, BSP, Linux, and Android, and I'm familiar with many programming languages such as x86 assembly, ARM assembly, C, C++, Java, Python, HTML, CSS, XML, SQL, JavaScript, Unix shell script. I have many mass production designs for domestic clients and some from foreign countries. If you want reference to some of my product designs, I can ask for the client's permission as they are mostly NDA secured. I'm serious about the intellectual properties of others. But you can view my portfolio for a LF N2PK VNA and a Red Pitaya STEMlab125 designs, both are the few best in class amateur measurement equipment with professional device quality, I improved on their original design to better fit my daily electrical test requirements, and as I just produce my own improved design for my private use, so it's legal for me to show them here without IP issues with the copyright holders. My current interest and most recent skills are FPGA, SMPS, digital power, motor control, and automotive electronics.