Kaviya Malaiyandi

Designed and developed RESTful and Web APIs using ASP.NET Core 6.0, EF Core, and SQL Server, enabling real-time data exchange across 5+ internal systems. Migrated critical modules from ASP.NET Web Forms and WinForms to WPF with MVVM, improving UI responsiveness and reducing maintenance. Built Windows Services and automated batch jobs using Windows Task Scheduler for hourly SQL Server–Oracle synchronization. Integrated Stripe, Twilio, and Salesforce via REST and SOAP APIs, automating operations and saving ~60 hours/month. Implemented OAuth 2.0, JWT, and Azure AD B2C for RBAC with SSO on 10+ endpoints. Led frontend enhancements with Angular/TypeScript and DevExpress components. Optimized data-heavy modules with LINQ/ADO.NET and stored procedures, cutting average query time from 1.8s to 300ms. Drove CI/CD via Azure DevOps with unit tests and SonarQube; deployed to Azure App Services. Collaborated in Agile/Scrum with JIRA; sprint completion over 95%.

Developed secure, scalable enterprise apps using ASP.NET MVC 5, C#, Web Forms, and DevExpress UI controls for 20,000+ users. Migrated WinForms modules to WPF; built SOAP-based services and WCF components for CRM and accounting integrations. Created multi-threaded Windows Services to automate backend billing and reconciliation, reducing processing time by 50%. Used LINQ, ADO.NET, and EF across MSSQL and Oracle 12c. Collaborated with Git, Bitbucket, and Sourcetree; automated integration testing with NUnit, cutting post-deploy defects by 65%. Managed SDLC in Agile with CI/CD pipelines; ensured timely releases.