Helia Shambouri

I’m a Senior .NET Developer with experience building scalable backend systems, REST APIs, admin panels, and financial applications. I currently work as a Senior .NET Developer at Kalon Wallet, where I contribute to the architecture and development of a financial and cryptocurrency platform. My responsibilities include designing backend solutions, reviewing code, supporting developers, planning technical tasks, and managing deployment workflows. My core skills include: • C# and ASP.NET Core • REST API development • Entity Framework Core, PostgreSQL, and Microsoft SQL Server • Clean Architecture, CQRS, MediatR, and Domain-Driven Design • JWT authentication, OTP, roles, policies, and authorization • Docker, GitLab CI/CD, Linux, and DigitalOcean • SQL database design and optimization • Payment, wallet, notification, audit log, and admin panel systems At Kalon Wallet, I have worked on user management, profile verification, investment contracts, wallet and payment operations, authentication flows, notification systems, private NuGet packages, audit logging, and automated deployment pipelines. I can help clients design new backend systems, improve existing APIs, fix complex issues, optimize databases, and build maintainable .NET applications from requirements to deployment. I focus on writing clean, maintainable, and reliable code. I communicate clearly, pay close attention to business requirements, and aim to deliver backend solutions that are easy to extend and maintain.