What are some common challenges Sr Ruby on Rails developers face when working on large-scale applications?

Sr Ruby On Rails Developers working on large-scale applications often encounter challenges like maintaining code quality as the codebase grows, optimizing application performance, and ensuring scalability to handle increased user traffic. They must also manage complex database relationships and integrations with other services. Collaborating with front-end developers, DevOps engineers, and product managers is crucial to address these challenges and deliver robust, maintainable solutions.