HCLTech Mexico Software Engineer Interview Questions
The questions to prepare for a HCLTech Mexico Software Engineer interview. Questions from real interview reports rank first. Updated weekly.
Use a hash map to find two array elements that sum to a target in O(n) time.
Tests your ability to identify bottlenecks and improve performance safely.
Tests your understanding of transaction guarantees and how they affect database correctness.
Tests your SQL tuning skills, including indexing, query plans, and performance troubleshooting.
Find the top 3 users by completed transaction volume in the last 30 days using joins and aggregation.
Revolut
ChimeRank the top 10 ResMed myAir users in each region using joins, aggregation, and ROW_NUMBER().
ResmedCalculate a three-day moving average of active-client revenue using aggregation and SQL window functions.
AArete
MITRE
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Tests your testing practices, tooling, and how you ensure reliability and regression coverage.
Tests your ability to interpret data, derive insights, and support engineering decisions.
Tests your structured thinking for tradeoffs, scalability, and reliability in system design.
Tests understanding of REST principles, resources, and typical request-response behavior.