HackerRank Backend Engineer Interview Questions
The questions to prepare for a HackerRank Backend Engineer interview. Questions from real interview reports rank first. Updated daily.
Assesses end-to-end system design with performance, caching, and data access optimization.
Evaluates data modeling and constraint-driven design for a URL shortening service.
Evaluates system design depth, scalability, and API and data modeling decisions.
Tests your ability to implement heap-based Top K algorithms efficiently.
Tests debugging skills and validation practices in backend development.
Evaluates backend API implementation, routing correctness, and automated testing practices.
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Evaluates backend API design, data modeling, and query strategy for event analytics.
Tests foundational web security and authentication concepts relevant to backend engineering.
Optimize a PostgreSQL assessment report over millions of rows using selective filtering, ranking, aggregation, and indexing.
Calculate the percentage of Swiggy users with at least one order in the last 30 days using a CTE, LEFT JOIN, and aggregation.
SwiggyHHackerRankOptimize challenge-performance analytics for a large HackerRank dataset while preserving results and improving aggregation efficiency.