INTERVIEW PREPARATION

Interview Questions & Answers

Concise, practical answers across backend, frontend, architecture, AI automation and leadership.

What is RAG and why use it?

Retrieval-Augmented Generation combines retrieval of relevant information with language generation. It helps an AI workflow ground responses in application-specific or trusted information instead of relying only on the model's general knowledge.

What is n8n used for?

n8n is a workflow automation platform that can connect applications, APIs, databases, communication channels and AI services into repeatable workflows.

How do you approach API design?

Start with a clear resource and request contract, define validation rules, identify lookup dependencies, keep responses consistent, document edge cases, and make authorization and error handling explicit.

What are the responsibilities of a Technical Lead?

A Technical Lead combines technical decision-making with delivery leadership: architecture, code quality, reviews, mentoring, requirement clarification, risk management, coordination and helping the team deliver incrementally.

How can AI chat history be managed?

Maintain conversation context using a stable conversation/session identifier, persist messages in a suitable store, retrieve only the relevant history, and combine it with semantic caching when a previous answer can safely satisfy a new query.

How can semantic caching improve an AI application?

Instead of matching only exact questions, create embeddings for user queries and compare them with cached questions/answers. When similarity exceeds a defined threshold and the cached result is still valid, return it without invoking the LLM again.