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Updated weekly · Last refresh Aug 30

C3.ai Software Engineer Interview Questions

The questions to prepare for a C3.ai Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

50questions
~7htotal time
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1
CodingStart here. 27 questions · ~217 min
Bit Manipulation and LogicMedium
Recently asked

Tests low-level reasoning and ability to translate bitwise logic into correct code.

logicBit ManipulationAlgorithmsC3.ai
Algorithmic Time Complexity UpgradeHard
Recently asked

Tests performance analysis and ability to redesign algorithms for better asymptotic runtime.

Problem SolvingAlgorithmsoptimizationC3.ai
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2
System Design10 questions · ~80 min
Large-Scale Service System DesignHard

Evaluates architecture decisions for reliability, scalability, and operational concerns.

system designC3.ai
Designing an Elevator SystemHard

Assesses your ability to structure requirements and design a scalable system.

system designC3.ai
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3
Behavioral & Leadership8 questions · ~64 min
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4
More topics5 questions · ~40 min
Schema and TradeoffsMedium

Assesses data modeling judgment and ability to reason about tradeoffs.

Trade-offsC3.ai
Threads, Mutexes, and Concurrency in GoMedium

Tests your understanding of concurrency primitives and avoiding race conditions.

goconcurrencyC3.ai
Big Data Problem Domain SelectionHard

Assesses problem decomposition and ability to define scope for ambiguous big data questions.

Problem SolvingC3.ai
Database Design with Entity RelationshipsMedium

Evaluates relational modeling skills and understanding of data relationships.

database designC3.ai
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
SQL Average Selling PriceMedium
Practice
Practice drill

Calculate weighted average selling prices by product using a date-range join, aggregation, and NULL handling.

leetcodesqlCostarCostar Group
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
Basic SQL and String ReverseEasy
Practice
Practice drill

Reverse Costar property search strings with PostgreSQL and flag rows whose stored expected value does not match.

sql queriesstring manipulationCostar
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.