OTIS Interview Questions
The questions to prepare for OTIS interviews, across all roles. Questions from real interview reports rank first. Updated weekly.
Reverse a string in Python using character traversal and return the reversed result.
OTISDescribe a time you had to choose between speed, quality, and scope, and how you aligned stakeholders around the trade-off.
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Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.
OTISExplain how you used a KPI and supporting metrics to diagnose a product issue and make a concrete product decision.
OTISApproach for turning user feedback into product decisions without overreacting to isolated requests.
OTISExplain how to design and evaluate an A/B test for a product feature, including metrics, MDE, sample size, and guardrails.
OTISApproach for balancing immediate delivery pressure with long-term strategic initiatives.
OTISExplain how to diagnose and optimize a slow PostgreSQL query on large Apidel Technologies datasets.
OTISUse ROW_NUMBER() to keep the earliest created_at 'Repl created' per entity and return out-of-order duplicates to delete.
Replit
QuantcastCompute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.
Gain Digital
TCS
Zest AIMerge CRM orders with GA events via an identity map to build a customer-level view using joins, window functions, and monthly rollups.
Artefact