We develop various applications, including WebAPIs, Workers, Console Applications, Email Services, Lambdas, and other solutions using the ASP.NET Core framework. To ensure the efficiency and scalability of the applications, we utilize a variety of services from Amazon Web Services (AWS), such as Cognito, SQS, SES, SNS, S3, EC2, Auto Scaling, and other smaller services. Additionally, we implement a monitoring framework using Jaeger, OpenTelemetry, Grafana, and Prometheus. With this approach, we aim to develop more consistent and robust applications capable of handling traffic spikes and other critical demands in the business environment.In terms of architecture, we employ domain-driven design (DDD) principles and modeling. This approach allows us to develop highly flexible and scalable applications that can adapt to market changes and meet our clients' needs. Apart from my responsibilities as a backend developer, I also lead a backend development team in our company. As a leader, I am responsible for supervising and guiding our developers, ensuring they have the necessary resources to perform their work and achieve our business objectives. I also evaluate the performance of our team and provide constructive feedback to help them grow and develop professionally.