Backend Technology Proficiency Questions

Assess practical, hands on experience across the backend technology stack. Candidates should be able to describe languages and server side frameworks they have used, the rationale for choosing particular database types and storage engines, how they applied caching and cache invalidation strategies, and which messaging or coordination systems they relied on. Interviewers should probe concrete examples of systems built or operated, trade offs considered between reliability latency throughput and cost, how containers and orchestration were used for deployment, and how development workflows and continuous integration and continuous delivery pipelines supported shipping and rollback.