Design an HR Document AI Platform
Company: Lyft
Role: Machine Learning Engineer
Category: ML System Design
Difficulty: medium
Interview Round: Technical Screen
Design an internal AI platform for a bank's HR organization. The platform should ingest HR documents such as policies, benefits guides, onboarding manuals, and compliance documents, then let employees search the corpus, ask natural-language questions, and receive answers with source citations. Describe the functional requirements, security and privacy requirements, document ingestion pipeline, indexing and retrieval design, model serving flow, access control, evaluation strategy, monitoring, and scaling considerations.
Overview: This question evaluates a candidate's competency in designing secure, compliant, and scalable ML-driven document ingestion, search, and question-answering platforms, testing skills in NLP retrieval, indexing, model serving, pipelines, access control, evaluation, monitoring, and privacy-preserving architecture.