douglasrocha91/Senior_Interview_Prep — reverse-engineered prompt

Build me a small Python hands on project to practice for a senior interview on an Integration File Management team for SAP Concur Travel and Expense.

I want a mini file platform that shows the full flow in a realistic but simple way. A user drops or uploads files, the system stores them, sends a message to a queue, processes the file, uses GPG for encrypt and decrypt steps, records status, handles retries, and moves failed items to a dead letter queue style area. It should make it easy to explain data integrity, SLAs, security, and troubleshooting in an interview.

Please include clear README instructions, sample files, local setup so I can run it without getting stuck, and notes that connect each part to AWS ideas like S3, SQS, Lambda, and Kubernetes. Keep the code clean enough to discuss OOP choices versus simple scripts. Look up current docs online if you need to.