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🏆 TOP-RATED (TOP 10% on Upwork) |💭 Looking for a tech partner to bring your vision to life? Whether you're launching a startup, scaling an existing business, or pivoting your current venture - I’m here to help you succeed. 🔍 What I Can Help You With: 🚀 MVP Development: Build and launch MVPs in record time, so you can test the market and monetize quickly. 🚀 Full-Stack Development: Seamless front-end and back-end solutions designed for performance, scalability, and maintainability. 🚀 Custom Cloud Solutions: Thoughtfully designed architectures that are cost-effective from day one and scale seamlessly with your growth. 🚀 AI-Powered Tools: Enhance your business operations with intelligent chatbots, recommendation engines, or sales tools. 🚀 Reliable Data Pipelines: Automate data aggregation with robust pipelines that seamlessly integrate APIs, scrapers, and data feeds for real-time updates. 🚀 Technical Leadership: End-to-end project guidance, from inception to operating successfully in production during peak times. 👨‍💻 Tech I Work With: 💻 Backend / Front end / Full-Stack Development: ✔️ Java (Spring / Quarkus) / Python (Flask) / Node.js / Express.js ✔️ PostgreSQL / MSSQL / ORACLE ✔️ React / Angular / JavaScript / TypeScript ✔️ HTML / CSS / Tailwind / Ant Design ☁️ AWS Cloud: ✔️ Serverless / Lambda / Step Functions / API Gateway / S3 / DynamoDB / SNS / SQS / etc 🚀 Infrastructure as code & CI/CD: ✔️ AWS CDK / OKD / Serverless framework ✔️ GitHub Actions / GitLab CI/CD What Clients Say About Me: ⭐️⭐️⭐️⭐️⭐️ "Thanh is a nice person to work with! We implemented a lot of functionality in open source library. Some tasks were really hard to implement. I recommend Thanh as experienced java developer." ⭐️⭐️⭐️⭐️⭐️"Thanh did a wonderful job on our project, would not hesitate to work with again." ⭐️⭐️⭐️⭐️⭐️ "He is best freelancer i have met to work on Java" 🚀 Let’s Build Your Next Big Thing! 📊 I believe that thoughtfully designed solutions should be both cost-effective and scalable. With a decade of experience in software architecture and technical leadership, I ensure your projects are built to succeed—so you can focus on what truly matters: your business. 💼 Ready to partner? Message me today, and let’s get started!

I'm java expert over 15 years in many positions such as as programmer, freelancer, analyst, java team leader, product architect, project manager. I'm major on Document Output, Document Management System, Enterprise Content Management (ECM), Document Conversion fields, Digital Image processing. Besides that, i have lot of experiences and good skills in WDK (Windows driver kit) development, Alfresco ECM, Filenet ECM, Filenet BPM, Education, Transportation, Hotel Reservation, Human Resource, Business Process Management (BMP), Groupon, CRM (Customer Relationship Management). About technology stack, almost time, I have worked and researched in J2EE technology and Open Source Frameworks such as Cruise Control, Hudson, JBoss, Apache Tomcat, Apache server, Tomcat/ JBoss High available system (HA- clustering & load balancing between many web servers), BPM Activiti, Apache Axis, Apache Struts, Apache Ant, Apache Lucene, Java Server Faces, ZK (the very famous Ajax framework for Java), Vaadin, GWT, Selenium, JQuery, iText, PDFLib, JTOpen, Spring, Hibernate, JPA, Eclipse, MyEclipse. Several years go, i started working with LAMP stack. MongoDB, Php, Wordpress, WooCommerce, Yii are also my favorite language/framework. My favorite methodology to develop software product is Test Driven Development (TDD). Generally, I’m very eager to work with Java and Php. In addition to the practical experience, I achieved the Master degree in Computer Science field at the Natural Science University with “Optical Music Recognition” in July 2005.

With 10+ years of experience in web, mobile, and enterprise systems, I specialize in building automation frameworks, improving release quality, and reducing regression effort across the entire development lifecycle. I help startups and SaaS teams deliver faster with reliable, scalable test automation and strong QA processes. What I Do: 🔷 Design and implement end-to-end test automation frameworks 🔷 Perform UI, API, and performance testing 🔷 Integrate automated tests into CI/CD pipelines (GitHub, Jenkins, GitLab) 🔷 Create test strategies, test cases, and QA processes 🔷 Ensure high-quality releases with clear reporting and metrics My Approach: 🔷 Understand requirements and business flows 🔷 Identify high-risk areas and define test strategy 🔷 Design scalable automation framework (Selenium, Cypress, Playwright) 🔷 Build and maintain automated test suites (UI + API) 🔷 Integrate with CI/CD for continuous testing 🔷 Provide clear reports and continuous improvements Expertise: 🔷 Automation: Selenium, Cypress, Playwright, Appium 🔷 API Testing: Postman, Karate, REST APIs 🔷 Performance: JMeter, Gatling 🔷 Languages: Java, Python, JavaScript/TypeScript 🔷 CI/CD: Jenkins, GitHub Actions, GitLab CI 🔷 Reporting: Allure, TestRail 🔷 Database: MySQL, PostgreSQL, SQL What Makes Me Different: 🔷 Strong focus on automation-first QA strategy 🔷 Experience with enterprise and SaaS platforms 🔷 Ability to work independently and improve QA processes 🔷 Clear communication and reliable delivery AI-Enhanced Testing: I also leverage AI tools such as GitHub Copilot and Cursor to accelerate test development, generate test cases, and improve automation efficiency. This helps reduce implementation time while maintaining high-quality, maintainable test code. I apply AI to: 🔷 Generate and optimize automation scripts (Selenium, Playwright, Cypress) 🔷 Speed up Cucumber scenarios and test case creation 🔷 Improve test coverage and edge case identification 🔷 Support faster debugging and code refinement Last updated: Mar 23, 2026

✅JAVA - Java core, java command line Application, JavaFX, Java web(Spring, Struts, Sevlet) - Strong with many modern framework like String, Quarkus,... - Jasper, Tibco jasper report, convert jrxml into jasper file - Run ffmpeg to convert video/image format - JSP and servlet coding, Thymleaf - SQL developer with experience to improve Database performance - API integration, RestAPI development - Familiar with AWS service such as: S3, EC2, lambda or VPC - Web scraping with Java and Selenium web driver ✅Database - Expert at SQL query with complicate query - Database optimization and query tuning - More than 10 years experience working with many relation database such as Oracle, MySQL, Postgres - Database design, schema design ✅KAFA - Expert level of kafka development - Strong at message queue and event processing - Expert in kafka configuration, consultancy - Work well on both java/python ✅PYTHON: - Flask and Django framework - Pandas, Numpy, PyGUI, Twinker - Web scraping with Selenium, BeautifulSoup, HTML parse,... ✅NODEJS - Typescript - Express framework with MongoDB, Relational DB ✅Bash scrip/Powershell - Shell script, C shell, Powershell - Automation script for web scrapting, sending mail, task processing, ... ✅Cloud: - AWS, GCP, Azure ✅Front-end: - Angular, VueJS and ReactJS

🌟🌟🌟 TOP RATED 🌟🌟🌟 📌 Flutter • Android • iOS • Cross-Platform • Game & Fintech • Senior Software Engineer with 8+ years of experience in Mobile & Web development • Flutter specialist with strong focus on production apps, performance, and clean architecture • Hands-on experience with Android (Kotlin) and iOS (Swift), both native and cross-platform • Proven Technical Lead / Team Lead experience (4–6 members) • Built and scaled apps in Fintech, Blockchain Wallets, Medical, Social, and Gaming domains • Strong background in architecture design, performance optimization, and CI/CD pipelines • Game development experience (Unity, Cocos2d-x) — great for animations and interactive UI • Product-driven mindset with solid communication and ownership • Fast learner, adaptable, and reliable for long-term projects Skills: Flutter (Proficient, 9/10), Java/Kotlin (Proficient, 9/10), Swift (Proficient, 9/10), Objective-C (Proficient, 9/10), API with PHP (Knowledgeable, 7/10), Angular JS (Knowledgeable, 8/10), Node JS (Knowledgeable, 7/10), Nuxt.js / Next.js (Proficient, 8/10), Unity / Cocos2d-x (Knowledgeable, 7.5/10), IDEs: Eclipse (Proficient, 9/10), Android Studio (Proficient, 9/10), Sketch (Knowledgeable, 7/10), Photoshop (Knowledgeable, 7/10), XD (Knowledgeable, 7/10), Notepad++ (Proficient, 9/10) Tools: SVN (Knowledgeable, 7/10), Jira (Knowledgeable, 7/10), Trello (Proficient, 8/10), GIT (Proficient, 8/10), Bitbucket (Proficient, 8/10), Gitlab (Proficient, 8/10)

Automation Systems Developer 🔧 Core Expertise Backend Job Management: Node.js + PostgreSQL + Redis for automation orchestration Android Automation: ADB, UIAutomator2, Accessibility Services Real-time Streaming: Android (scrcpy) + Browser (CDP) streaming Web Automation: Playwright, Selenium, Chrome DevTools Protocol 🚀 Technical Stack Backend: Node.js, Java Spring Boot, PostgreSQL, Redis Mobile: Android automation, Flutter MVVM, device management Web: Playwright, Selenium, CDP, cross-platform frameworks Tools: Appium, JHipster, GPT-4 integration 💡 What I Deliver Complete automation platforms with job scheduling Real-time streaming and monitoring systems Scalable solutions for high-throughput scenarios Clean, production-ready code 📊 Experience 4+ years building production automation systems Published app with 10,000+ downloads Multi-client automation platform deployment Specialized in end-to-end automation ecosystems from backend to client streaming.