Revolut Sr. Software Engineer interview questions

2. System Design Round (90 mins) They ask to design an internal developer portal that establishes a fully automated, version-control CI/CD pipeline at scale. It basically involves designing the Internal developer, I started with requirements, non-funtional requirements, entities in system, I started with API design but they said it's okay to skip, and high level design. I started with Component-Based Design where I drawn frontend, CLI, API Gateway, catalog services, ... and all other components of the developer portal But they were interested in detailed CI/CD pipeline steps. This is where I screwed up; I caught the hint much later in the interview when there were 10 mins left, and I quickly drawn CI pipeline and a CD pipeline, but wasn't able to explain each step in the CD pipeline in detail. They wanted a more comprehensive Workflow and Operational design of CI/CD pipeline instead of a component-based design of the internal developer portal. Since I didn't complete the design, I was ruled out of the interview