PURNIMA DISSANAYAKE

Project : Sever Code registration system

• Designed and executed comprehensive functional and non-functional test scenarios to ensure system reliability, scalability, and performance.
• Engineered a client–server data exchange process using TIdHTTP and JSON, enabling secure and efficient communication between distributed components.
• Developed server-side logic to generate and validate unique registration codes, ensuring data integrity and license authenticity.
• Implemented features to capture and log client metadata (IP address, machine name, site code, and public IP) in the Firebird database for traceability and analytics.
• Followed agile development practices and applied principles of clean code and secure coding standards throughout the project lifecycle.

Designed and developed enterprise software solutions including Shopping Cart, Point of Sale (POS), Inventory Control, HR & Payroll, and Hotel Booking Systems using C#, ASP.NET, VB.NET, PHP, JavaScript, jQuery, and SQL Server.

• Architected scalable and modular applications leveraging software design patterns such as Façade, Singleton, Factory, and Repository for improved maintainability and performance.
• Implemented RESTful web services for seamless system integration and API-based data communication.
• Integrated role-based authentication, data encryption, and secure transaction handling across all systems.
• Utilized GitHub/GitLab for version control and collaborative development, and managed CI/CD workflows using Azure DevOps.
• Performed comprehensive Quality Assurance (QA) for both web and desktop applications, incorporating manual and automated testing (Selenium WebDriver) to ensure functionality, usability, and cross-browser compatibility.
• Developed unit tests and integration tests using NUnit and MSTest, ensuring code reliability and continuous integration readiness.
• Conducted load, performance, and regression testing, applying validation and verification techniques to maintain high software quality standards.
• Deployed systems on Windows Server and optimized databases for performance tuning and scalability.
• Led a cross-functional development team, overseeing sprint planning, code reviews, and mentoring junior developers to meet project milestones effectively.
• Worked in a Sri Lanka–based software development company specializing in custom enterprise application development and cloud-ready business solutions.