I'm Ahsan Ullah, a software engineer focused on building reliable backend systems, APIs and modern web applications using .NET, C#, SQL and cloud technologies.
I'm a software engineer with several years of professional experience building business applications and backend systems.
My primary focus is the Microsoft ecosystem, especially C#, .NET, SQL Server and Web APIs. I also work with modern frontend technologies, Docker and cloud infrastructure.
I enjoy taking complex requirements and turning them into maintainable, practical software.
A selection of applications and systems I've built.
A document signing platform designed for digital document workflows, including document management, signers, viewers, PDF processing and authentication.
A modern backend application demonstrating clean architecture, authentication, database integration, automated testing and CI/CD practices.
A lightweight Windows application that visualizes microphone and system audio levels in real time.
Business software involving document processing, PDF workflows, digital signatures, authentication and enterprise database systems.
Developing and maintaining business applications, backend services, APIs, database systems and document-processing workflows.
Worked with C#, .NET, SQL Server, Windows applications, APIs and large business-oriented software systems.
Interested in working together, discussing a project, or simply talking about software engineering?
bangladeshahsan@gmail.com