At AVACO GmbH, I worked as a freelance Back End Developer designing and maintaining scalable microservices architectures. I developed ASP.NET Core APIs with C# and implemented GraphQL and gRPC services.
I also integrated RabbitMQ for asynchronous communication, Stripe for payments, and Keycloak for single sign-on. My work included database schema design and query optimization with MongoDB, as well as web conferencing solutions using BigBlueButton.
At Acmesoft Solutions, I participated in client discussions and requirements gathering, then developed REST APIs using ASP.NET Core, Entity Framework, and PostgreSQL. I also generated API clients from OpenAPI documents and created PDF documents programmatically.
At Seasia Consulting, I worked on requirements analysis and the design and development of UI and business logic in ASP.NET and C#. I developed SQL stored procedures, integrated Stripe and social sharing features, and implemented message queues.
