Hire the Best Delphi Developers
in Vietnam

Professional Qt developer.

Hello, Thank for visiting my profile. I'm a software engineer with 8 years of experience in developing Desktop Application. I have worked on many projects in this field and got success. I am good at C/C++, Win32, MFC, Qt, C# WPF, Winform, python, Java core and proficient in Visual Studio, Eclipse, Qt Creator. I deeply understand OOP design and GoF design patterns. I am familiar with both Window and Linux. I very happy to cooperate with you. Hai Nguyen.

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

C++ Systems Developer | Security Software | Windows & Linux Internals I help companies build high-performance system software in C/C++ for Windows and Linux. My expertise is in low-level development where performance, reliability, and deep OS integration matter. I have experience developing security and system software, including file scanning engines, process protection/self-defense mechanisms, and cross-platform infrastructure. I work comfortably with OS APIs, filesystem internals, and debugging complex runtime issues. I also design automated testing environments using virtual machines to validate software across multiple OS versions and kernel configurations. What I can help with: - C / C++ system software development - Windows API & Linux system programming - Security software and endpoint protection components - Cross-platform libraries and infrastructure - Performance optimization and debugging - Logging, diagnostics, and runtime analysis - VM-based automated testing environments I focus on writing clean, efficient, and production-ready code that integrates deeply with the operating system.

Over ten years of software development experience in C/C++/MFC. Experienced in software development life cycle including requirement analysis, design and implementation. Research Blockchain/bitcoin. Programming Languages: C/C++, Win32, MFC, C#. Databases: PostgreSQL, SQL Server. Software process: CMMI, Agile (Scrum, Kanban, Jira tool). Other: Blockchain/bitcoin, Visual Studio, Eclipse, UML, GIS, GPS, XML, XML-RPC, COM, Hook, GDI, DirectX (DirectDraw, DirectShow, Direct3D), curl, Touch Screen device and printer device.

Hi.I am Pham Van Sy. I 'm application developer. I have 6 years experience working on C++/C#,WPF,MVVM...Let's contact with me if you see i can do it