Have you had experience in independently designing the architecture of a service or its part?

Yes, I have experience in independently designing the architecture of a service. For example, when developing a microservices application, I was responsible for designing one of the key services — the authentication and authorization service.

In this project, I:

• Defined the main components of the service and their interactions.
• Chose an appropriate protocol (OAuth 2.0) for authorization.
• Designed a REST API considering security and scalability.
• Organized storage of user data and tokens using a database and caching.
• Thought through error handling and logging for easier support.

This approach allowed creating a reliable and scalable service that easily integrates with other parts of the system.