Luxoft Singapore Backend Engineer Interview Questions
The questions to prepare for a Luxoft Singapore Backend Engineer interview. Questions from real interview reports rank first. Updated daily.
Detect whether a directed dependency graph of startup tasks contains a cycle using DFS or topological ordering.
Explain how to implement a singleton in Java, including thread safety, lazy initialization, and common pitfalls.
Evaluates ability to prevent and mitigate race conditions under load.
Explain optimistic and pessimistic locking for banking transactions, including tradeoffs, failure handling, and when each approach is appropriate.
Explain the ACID properties of database transactions and their importance.
Assesses understanding of indexing mechanics and performance trade-offs in relational databases.
Use SQL window functions to rank regions by average 2024 yield within each country.
Ernst & Young
KBR
Maximus TechUse a scalar subquery and MAX to find the second distinct annual salary.
PCS Global Tech
Amazon Web ServicesOptimize a PostgreSQL reporting query by reducing scanned rows, preserving unmatched records, and selecting the latest related review efficiently.
Zillow
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Tests ability to apply design patterns to recurring backend architecture problems.
Tests troubleshooting and resolution approach for deadlocks in production systems.