Hire the Best Database Freelancers
in Vietnam

Hi there 👋I’m Thy, a Top Rated freelancer with 100% Job Success and proven experience in market research, lead generation, online research, and data collection. I specialize in finding the right information and the right people—not simply collecting data. My work involves identifying potential companies, suppliers, buyers, influencers, candidates, and prospects; evaluating them against specific criteria; verifying information; checking duplicates; and organizing findings into clean, actionable databases. I’ve successfully completed research projects across multiple markets, industries, platforms, and target audiences, including company and supplier research, LinkedIn research, social media/influencer sourcing, market research, and structured database building. What I bring: 🔎 Deep online & market research 🎯 Lead generation & prospect research 📊 Excel & Google Sheets data management 📱 Social media & influencer research ✅ Data verification, qualification & duplicate checking 🗂️ Structured database building ⚡ Accurate, detail-oriented execution I focus on relevance, verification, and accuracy—not just volume, and I’m comfortable following detailed criteria and working independently. Available to start immediately.

Greetings, and thank you for visiting my profile!! 🔥𝐋𝐞𝐭 𝐦𝐞 𝐠𝐞𝐭 𝐬𝐭𝐫𝐚𝐢𝐠𝐡𝐭 𝐭𝐨 𝐭𝐡𝐞 𝐩𝐨𝐢𝐧𝐭: I'm a professional freelancer specializing in 𝐃𝐚𝐭𝐚 𝐄𝐧𝐭𝐫𝐲! And if you're looking for top-quality services, professional data entry, web research, Data Collection & Extraction, or admin work, don't hesitate to contact me. With more than 2 years of experience as a Data Entry Specialist, Microsoft Word, Excel & PDF, and 1 year in Data Scraping, Web Research, Lead Generation, VA, and Shopify Data Entry & WordPress Data Entry so I believe that I can be a strong asset to your project. I always respond to my messages in seconds ⚡, and communication with me will be very smooth and easy. 💼 𝑯𝒆𝒓𝒆’𝒔 𝒘𝒉𝒂𝒕 𝑰 𝒄𝒂𝒏 𝒅𝒐 𝒇𝒐𝒓 𝒚𝒐𝒖: ✅ Data Entry ✅ Virtual Assistant Services ✅ Web Research ✅ LinkedIn Outreach ✅ CRM Data Entry ✅ Shopify Data Entry ✅ Lead Generation ✅ WordPress Data Entry ✅ Article Research ✅ Product Reviews Writing-Rewriting ✅ PDF to MS Word ✅ Website Content Upload ✅ Image Research & Editing ✅ Scanned PDF to Excel ✅ Data Management, Data Organization / Presentation Since I'm new to Upwork, I understand the importance of building trust from the very beginning. So here are a few reviews from my past off-platform clients: ⭐⭐⭐⭐⭐ "𝐾ℎ𝑎𝑛𝑔𝑔 𝑖𝑠 𝑟𝑒𝑎𝑙𝑙𝑦 ℎ𝑎𝑟𝑑 𝑎𝑛𝑑 𝑞𝑢𝑎𝑙𝑖𝑡𝑦 𝑤𝑜𝑟𝑘𝑒𝑟. 𝑅𝑒𝑐𝑜𝑚𝑚𝑒𝑛𝑑𝑒𝑑." ⭐⭐⭐⭐⭐ "𝑇ℎ𝑒 𝑐𝑜𝑛𝑡𝑟𝑎𝑐𝑡𝑜𝑟 𝑖𝑠 ℎ𝑖𝑔ℎ𝑙𝑦 𝑠𝑘𝑖𝑙𝑙𝑒𝑑. 𝐼 ℎ𝑎𝑑 𝑎 𝑔𝑟𝑒𝑎𝑡 𝑒𝑥𝑝𝑒𝑟𝑖𝑒𝑛𝑐𝑒, 𝑤ℎ𝑒𝑟𝑒 ℎ𝑒 𝑔𝑜𝑡 𝑖𝑚𝑚𝑒𝑑𝑖𝑎𝑡𝑒𝑙𝑦 𝑎𝑙𝑙 𝑡ℎ𝑒 𝑖𝑛𝑠𝑡𝑟𝑢𝑐𝑡𝑖𝑜𝑛𝑠, 𝑑𝑖𝑑 𝑎 𝑣𝑒𝑟𝑦 𝑠𝑒𝑟𝑖𝑜𝑢𝑠 𝑤𝑜𝑟𝑘, 𝑎𝑛𝑑 𝑡ℎ𝑒 𝑟𝑒𝑠𝑢𝑙𝑡 𝑤𝑎𝑠 𝑒𝑥𝑐𝑒𝑙𝑙𝑒𝑛𝑡. 𝐿𝑜𝑜𝑘𝑖𝑛𝑔 𝑓𝑜𝑟𝑤𝑎𝑟𝑑 𝑡𝑜 𝑤𝑜𝑟𝑘𝑖𝑛𝑔 𝑤𝑖𝑡ℎ ℎ𝑖𝑚 𝑖𝑛 𝑡ℎ𝑒 𝑓𝑢𝑡𝑢𝑟𝑒." …and several more positive reviews from satisfied clients. I'm hospitable to almost any quite data processing & data entry, data scraping, lead generation, LinkedIn projects, and I will do my best to end the work accurately, on time, and as cost-effectively as possible for you as a potential employer. Regards Khangg

Technical Leadership: Driving architectural decisions, designing microservices, and ensuring code quality across the full stack. Backend Development: Expertise in Java (8+), Spring Boot, Hibernate, API design (REST/SOAP/gRPC), and database management (SQL/NoSQL). Frontend Development: Developing responsive, user-facing interfaces using frameworks like React or Angular. System Design & Optimization: Creating secure, scalable applications and improving performance. CI/CD & DevOps: Utilizing tools like Docker, Kubernetes, Terraform, and Jenkins for deployment, OpenSearch, RabbitMQ, Kafka, Kibana. Experiences with AI technology, Clause Code, Cursor, Copilot, Bedrock

Excel | Google Sheets | Power Query | VBA | Google Apps Script | Python I help businesses automate Excel & Google Sheets workflows, eliminate repetitive manual tasks, and build reliable inventory, reporting, dashboard, and business management systems that save time, reduce errors, and improve productivity. With over 15 years of experience working across engineering, construction, logistics, import/export, and e-commerce, I understand that spreadsheets are only one part of a larger business process. My goal is to build practical solutions that are efficient, maintainable, and easy for your team to use. I don't just write formulas or VBA code, I analyze your workflow, identify bottlenecks, and design automation solutions that improve the way your business operates. =================== SERVICES =================== 1. Business Automation - Excel VBA (Macros) - Google Apps Script - Workflow Automation - Business Process Automation - Custom Business Applications 2. Reporting & Dashboards - Power Query - Power Pivot / Data Model - Executive Dashboards - KPI Reporting - Pivot Tables & Interactive Charts 3. Business Systems - Inventory & Stock Management - Sales & Operations Reporting - CRM & Activity Tracking - Timesheets & Payroll - Project Tracking - Asset & Equipment Management - Business Performance Reporting 4. Data Processing & Analysis - Data Cleaning & Transformation - Data Validation - Data Consolidation - CSV & Excel Processing - PDF Data Extraction - Database Integration - Financial & Operational Reporting 5. Python Solutions - Desktop Automation - Web Scraping - Data Collection - File Processing - Custom Windows Applications =================== TYPICAL PROJECTS =================== I have developed automation solutions for projects such as: - Inventory Management Systems - KPI & Executive Dashboards - Google Sheets Business Applications - Multi-workbook Reporting Systems - Power Query Data Consolidation - Workflow Automation - Payroll & Timesheet Systems - Amazon & eCommerce Reporting - Survey & Engineering Data Processing - PDF Data Extraction & Reconciliation - Business Process Automation =================== MY APPROACH =================== Every business is different. Before writing a single line of code, I take time to understand your workflow, identify the real problem, and recommend the most appropriate solution, not simply the most advanced technology. - Sometimes a well-designed Excel workbook is enough. - Sometimes Power Query is the best option. - Sometimes VBA or Google Apps Script provides the greatest value. - For larger automation projects, Python may be the right choice. My objective is always the same: create solutions that are simple for users, easy to maintain, scalable, and reliable for years to come. =================== WHY CLIENTS WORK WITH ME =================== - Business-focused, not just spreadsheet-focused - Strong analytical and problem-solving skills - Clean, well-structured, maintainable solutions - Excellent communication and regular project updates - Long-term support and continuous improvements - Clear documentation and user guidance when required - Full-time freelancer committed to long-term client relationships =================== LET'S WORK TOGETHER =================== Whether you need to automate reports, build dashboards, improve inventory management, streamline business workflows, or develop a custom Excel or Google Sheets solution, I'd be happy to discuss your project. My goal is not simply to deliver a spreadsheet, but to build a solution that creates long-term value for your business.

Nanotechnology researcher having experience of numerous advanced material production such as graphene-based composite, copper-based composite, silica-based composite... Also a productive freelancer with bunch of skills.

I’m a Senior .NET Developer combined with a Business Analyst mindset, with 10+ years of experience delivering and rescuing business-critical systems. I don’t just develop features — I analyze business workflows, fix system bottlenecks, and deliver scalable solutions that actually improve operations. In addition, I bring strong UI/UX implementation skills, allowing me to turn designs into pixel-perfect, production-ready interfaces — ensuring both performance and user experience. 🏆 Top Rated Freelancer 🏆 100% Job Success Score 💰 $10,000+ Earned 🚀 What I Specialize In 🔹 ERP / CRM / Business Systems Development Design and build systems for Sales, HRM, Warehouse, Manufacturing, Fleet Management Translate business requirements into scalable technical solutions 🔹 Legacy System Modernization (.NET) Upgrade old systems (.NET MVC, WebForms) → .NET Core / Blazor Refactor messy codebases into maintainable architectures Improve system performance, stability, and scalability 🔹 System Performance Optimization Fix slow systems (database queries, API latency, UI rendering) Optimize SQL, backend logic, and frontend performance 🔹 Pixel-Perfect UI Development (Figma / Adobe → Code) Convert Figma / Adobe XD / Photoshop designs into responsive HTML/CSS Ensure pixel-perfect accuracy across devices and browsers Implement UI using Blazor, DevExpress, Telerik 🔹 Business Analysis + Technical Execution Analyze workflows and suggest better system design Reduce operational inefficiencies through smart automation 💡 Why Clients Hire Me I think like a business owner, not just a developer I can quickly understand complex legacy systems and take ownership I proactively identify risks, bottlenecks, and better approaches I communicate clearly and provide regular progress updates 🧠 Tech Stack Backend: C#, .NET Core, ASP.NET MVC, Web API, Entity Framework Frontend: Blazor, HTML, CSS, JavaScript, Bootstrap, jQuery UI Frameworks: DevExpress, Telerik (Kendo UI), Syncfusion Database & Data: SQL Server, PL/SQL, OLAP, MDX Other: Python, ETL, Power BI, Excel, .NET MAUI 🎯 Productized Services (Fixed Scope – High Value) 💼 ERP / CRM System Audit – from $200 - Review architecture, database, and workflows - Identify bottlenecks & risks - Provide actionable improvement plan ⚡ Fix Slow .NET System – from $300 - Analyze performance issues (SQL / API / UI) - Optimize response time and system stability - Deliver measurable improvements 🔧 Legacy System Upgrade (.NET MVC → .NET Core / Blazor) - Codebase assessment - Migration strategy - Step-by-step modernization plan 📊 Database & Query Optimization – from $150 - Analyze slow queries - Optimize indexes and execution plans - Improve overall system performance 📌 Best Fit Clients - Companies running old .NET systems with performance issues - Businesses needing ERP / HRM systems built or improved - Founders who want a developer that understands business, not just code 💬 Let’s Work Together If your system is slow, hard to maintain, or no longer fits your business — I can help you analyze, fix, and upgrade it efficiently.