Hire the Best .NET Core Developers in Ho Chi Minh City, VN

Hi, I’m Dat, a Technical Project Leader with over 10 years of experience in software development, system architecture, and team management. I currently lead a dedicated development team and work closely with cross-functional teams, including Business Analysts, Developers, Quality Control, Operations, and external partners, to deliver reliable and scalable software solutions. My technical expertise includes backend and frontend development using C#, JavaScript, TypeScript, C/C++, and Kotlin. I also have hands-on experience in UI/UX design, including user-flow analysis, wireframing, interface design, and creating intuitive user experiences for web, mobile, POS, and enterprise applications. I specialize in payment technologies, POS systems, EMV, embedded systems, and transaction-processing platforms. I have contributed to and led projects involving EMV-compliant payment solutions, card issuance, terminal integration, payment gateway integration, transaction processing, and communication between POS applications and payment terminals. I have a strong understanding of EMV standards and specifications and extensive experience working with payment processors, acquirers, banks, merchants, and payment-terminal manufacturers. Throughout my career, I have led projects from requirement analysis and solution design through development, testing, deployment, and production support. I focus on building high-quality products that address real business needs, provide excellent user experiences, and deliver long-term value to customers. I am passionate about using technology, thoughtful UI/UX design, and strong engineering practices to solve complex business problems, improve operational efficiency, and drive innovation. | TECHNICAL SKILLS | • Languages: C#, JavaScript, TypeScript, C/C++, Kotlin • Backend: .NET, .NET Core, RESTful APIs, Microservices • Frontend: Angular, JavaScript, TypeScript, HTML, CSS • UI/UX: User flows, Wireframing, Prototyping, Web and Mobile UI Design • Payment Technologies: POS, EMV, Contact and Contactless Payments, QR Payments, Payment Gateways • Embedded Systems: Payment Terminals, POS–EDC Integration, Device Communication • Leadership: Project Management, Team Leadership, Technical Planning, Solution Architecture • Delivery: Requirement Analysis, Development, Testing, Deployment, Production Support

Software Engineer | .NET Specialist With over 14 years of experience, I specialize in building robust, scalable applications using .NET technologies, particularly C# and .NET Core. My expertise spans backend development, system design, and creating solutions that meet business objectives efficiently. What Sets Me Apart as a Professional ✅ Effective Communication – Clear, concise, and collaborative. ✅ Quick Learner – Rapidly adapt to new technologies and methodologies. ✅ Resilient Work Ethic – Persistent and disciplined in overcoming challenges. ✅ Task & Time Management – Deliver quality work under tight deadlines. ✅ Prioritization – Focused on what matters most to meet goals effectively. Key Technical Skills ⭐ Strong foundation in Object-Oriented Programming (OOP) and System Design. ⭐ Deep understanding and application of design patterns in software solutions. ⭐ Proficient in REST API design, architecture, implementation, and integration. ⭐ Skilled in version control systems, including GitHub and GitLab. Core Competencies ⭐ Backend Development: Building robust applications using .NET Core. ⭐ Microservices Architecture: Developing with clean, scalable design principles. ⭐ Unit Testing & TDD: Ensuring high-quality code through test-driven development. ⭐ CI/CD Pipelines: Creating automated workflows using Git and other CI tools. ⭐ Database Management: Working with both RDBMS (SQL Server, MySQL) and NoSQL (MongoDB). ⭐ Web Applications: Creating responsive web apps using Angular 2+ and modern frontend frameworks. ⭐ REST APIs: Developing APIs to power mobile and frontend applications. Tech Stack ✅ Languages & Frameworks: C#, .NET Core, React, TypeScript, JavaScript, jQuery. ✅ Databases: SQL Server, MySQL, MongoDB. ✅ DevOps & Tools: Azure, GitHub, GitLab, CI/CD pipelines. ✅ Methodologies: Test-Driven Development (TDD), Clean Architecture, Agile practices. Thank you for taking the time to review my profile. – Kiet Le

I am a tech professional with a Bachelor of Science in Information Technology and a strong foundation in software development, data structures, system analysis, and technical problem-solving. I focus on building practical, efficient solutions and improving user experience through careful attention to detail. I am adaptable, reliable, and quick to learn new tools, technologies, and workflows based on project requirements. My background allows me to support a wide range of technology-related tasks, including coding, troubleshooting, research, data-related work, QA testing, web and app review, and technical support. I can work independently or as part of a team, communicate clearly, and deliver results with accuracy and consistency. I am currently looking for new opportunities to expand my experience, contribute to meaningful projects, and build long-term professional relationships. I am open to both short-term assignments and ongoing collaborations where I can apply my skills, learn from real-world challenges, and provide reliable support. If you are looking for a motivated and dependable professional to support your project, I would be happy to help.

Senior Sitecore & .NET Developer | Azure Certified | Enterprise Solutions Expert I specialize in building scalable, secure, and high-performance solutions for corporate websites, digital platforms, and cloud-native applications. What I can help you with ✅ Sitecore XP/XM Development ✅ Sitecore Upgrade & Migration ✅ ASP.NET Core & .NET Development ✅ Azure Cloud Architecture ✅ REST API & Microservices ✅ CI/CD with Azure DevOps & Jenkins ✅ Performance Optimization ✅ Production Troubleshooting & Support Technical Skills C# ASP.NET Core .NET Framework .NET 8 Entity Framework Core SQL Server Sitecore XP/XM Sitecore Headless Azure App Service Azure SQL Redis Service Bus Docker Azure DevOps Jenkins REST API Angular JavaScript TypeScript Certifications 🏆 Microsoft Certified: Azure Developer Associate (AZ-204) 🏆 Microsoft Certified: DevOps Engineer Expert (AZ-400) 🏆 Microsoft Certified: Azure AI Engineer Associate 🏆 Sitecore 10 .NET Developer Certification Industries Corporate Websites Real Estate Membership Platforms Digital Experience Platforms Enterprise CMS I focus on delivering clean architecture, maintainable code, and reliable solutions that help businesses scale. Let's discuss how I can help your project.

A results-driven software engineer with five years of expertise in full-stack development, specializing in .NET and modern web technologies. Proven track record in delivering scalable solutions across payment systems, insurance, and e-commerce domains. Committed to Agile methodologies and technical excellence.

Overview I am a Full-Stack Software Engineer with a proven track record of designing, building, and scaling high-traffic web applications. I don't just write code; I build complete, cost-optimized, and revenue-generating products from scratch. WHAT I'VE BUILT: ttsforfree SaaS Platform (Founder and Lead Engineer) To understand what I can do for your business, look at my proprietary SaaS platform: a global Text-to-Speech and AI OCR application that I designed, developed, and successfully scaled single-handedly. (Please check my Portfolio section below for the live website link). - Scale: Currently serving 9,300+ Monthly Active Users with over 2M+ requests globally. - AI Integration: Seamlessly integrated 1,800+ AI voices across OpenAI, Azure Neural, Google Cloud, and Gemini using highly efficient, asynchronous pipelines. - Architecture: Event-driven architecture utilizing RabbitMQ for background workers and SignalR for real-time updates. - Business Logic: Implemented complex billing/credit systems, PayPal/Stripe webhook reconciliation, and automated SEO strategies resulting in a 300% organic traffic surge. - Infrastructure: Full DevOps ownership, Dockerized deployment, Cloudflare R2 object storage, and highly optimized Redis caching that reduced backend load by 70%. ENTERPRISE EXPERIENCE (High-Traffic Systems) - Beyond my startup, I have engineered and optimized core booking systems for a major travel service company, handling massive concurrent loads. - Managed systems processing 2,000 requests per 15s (approx. 130 RPS). - Saved over $4,500 annually by auditing, right-sizing server resources, and consolidating workloads without impacting performance. - Migrated heavy logging workloads to MongoDB with TTL Indexing, dropping RAM consumption from a critical 90% to a stable 50%. - Built robust CI/CD pipelines, integrated international payment gateways, and implemented strict RBAC security for internal/partner APIs. MY TECH STACK AND EXPERTISE - Backend: C#, ASP.NET Core 8, Entity Framework, Dapper, RESTful APIs. - Frontend: Next.js (SSR/SSG), ReactJS, TailwindCSS, AngularJS. - Databases: SQL Server, PostgreSQL, MySQL, MongoDB, Redis. - Message Brokers: RabbitMQ. - DevOps and Cloud: Docker, Linux (Ubuntu), IIS, CI/CD (Jenkins, GitLab, GitHub Actions), Cloudflare R2. - Third-Party APIs: OpenAI, Azure Cognitive Services, Google Cloud, PayPal, Stripe. WHY WORK WITH ME? - Product Mindset: As a SaaS founder, I understand the delicate balance between writing clean architecture and shipping features fast to generate revenue. - Cost-Obsessed Optimization: I write highly optimized code. I know how to make heavy applications run smoothly on minimal infrastructure, keeping your server bills low. - End-to-End Ownership: I can take your idea from backend architecture to a lightning-fast frontend, fully deployed and monetized. I am highly responsive, proactive, and ready to bring enterprise-level stability and startup-level speed to your next project. Let's discuss how we can build something great together!