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Updated weekly · Last refresh Aug 30

Ontic Software Engineer Interview Questions

The questions to prepare for a Ontic Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

34questions
~5htotal time
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1
CodingStart here. 17 questions · ~137 min
Low-Level Design for Booking SystemHard

Tests object-oriented design, core class modeling, and implementation of design patterns.

abstractionfunctionsoopOntic
Ball Weighing PuzzleMedium

Tests reasoning efficiency and systematic problem-solving under constraints.

MathSearchingGreedyOntic
Sliding Window Anomaly DetectionHard

Tests algorithmic ability to process streams and detect anomalies efficiently.

Stream ProcessingStackQueueOntic
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2
Execution3 questions · ~24 min
LinkedIn-Scale Data StructuresHard

Tests your ability to design and optimize data structures for high-throughput application workloads.

Trade-offsRoadmappingScope ManagementOntic
Real-Time Spatial Threat QueriesHard

Tests data modeling and performance thinking for geospatial queries at threat-event scale.

Trade-offsperformanceData ModelingOntic
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3
Behavioral & Leadership11 questions · ~89 min
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4
More topics3 questions · ~24 min
Optimize Slow Multi-Join SQLMedium

Tests SQL performance tuning and practical strategies for large-scale relational queries.

JoinsperformanceAggregationsOntic
Browser Steps for Google.comMedium

Evaluates understanding of web request flow from URL entry to page rendering.

Ontic
System Design QuestionsMedium

Assesses system design thinking, architecture decisions, and tradeoff reasoning.

system architectureOntic
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Sum From 1 to 1,000,000Easy
Practice
Practice drill

Calculate the sum of integers from 1 to 1,000,000 using PostgreSQL aggregation and filtering.

AlgorithmsVirtu Financial
Analyzing Operations Bottlenecks with SQLHard
Practice
Practice drill

Use multi-level CTEs, joins, and LAG to identify Samsung regional inventory shortages and late deliveries.

JoinsperformanceAggregationsSamsung ElectronicsApeel Sciences
Contact Center Agent Performance MetricsHard
Practice
Practice drill

Compute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.

ETLAggregationsData ModelingADP
The finish line: interview-readyComplete all 34 questions plus 3 hands-on drills to finish this plan.