I have extensive experience with ASP.NET Core, having used it in multiple projects to build scalable and high-performance web applications. In one project, I developed a RESTful API using ASP.NET Core to serve data to a front-end application. I implemented dependency injection, middleware for logging and error handling, and used Entity Framework Core for data access. This approach allowed us to achieve a modular architecture, making the application easy to maintain and extend.

I use Git for version control and GitHub or Azure DevOps for collaboration. I follow a feature-branch workflow where each new feature or bug fix is developed in a separate branch. This ensures that the main branch remains stable. I also use pull requests for code reviews, which helps maintain code quality and consistency. Regular commits with descriptive messages and frequent merges from the main branch help keep the project up-to-date and reduce merge conflicts.

I focus on several strategies to optimize .NET application performance, including efficient database querying using LINQ and Entity Framework, caching frequently accessed data, and minimizing network calls. I also profile the application using tools like Visual Studio's Performance Profiler to identify bottlenecks. Additionally, I ensure that the application is well-structured with a focus on clean code and proper indexing of database tables to improve query performance.

I follow best practices for securing .NET applications, such as using HTTPS for all communications, implementing input validation to prevent injection attacks, and encrypting sensitive data both at rest and in transit. I also ensure that authentication and authorization are properly configured using ASP.NET Core's Identity system. Regular security audits and staying updated with the latest security patches and vulnerabilities are crucial in maintaining application security.

I have implemented microservices architecture using .NET in several projects. One notable project involved breaking down a monolithic application into microservices, each responsible for a specific business capability. I used ASP.NET Core to build RESTful APIs for each service and employed Docker for containerization. I also used Azure Service Bus for inter-service communication and Azure Kubernetes Service (AKS) for orchestration. This approach improved scalability, fault tolerance, and made the system easier to maintain and update.