Top 25
Prep plan
Updated weekly · Last refresh Aug 30

Decagon Agentic AI Engineer Interview Questions

The questions to prepare for a Decagon Agentic AI Engineer interview. Questions from real interview reports rank first. Updated weekly.

25questions
~3htotal time
Track your progressSign up free to work through all 25 questions and resume where you left off.
Start practicing free →
1
Machine LearningStart here. 4 questions · ~32 min
Supervised vs Unsupervised LearningEasy

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffDecagon
Prevent Overfitting in ML ModelsEasy

Explain how to reduce overfitting using regularization, validation, and model selection.

Cross-ValidationBias-Variance TradeoffRegularizationDecagon
More Machine Learning questions with a free account
2
Pipelines3 questions · ~24 min
Secure ETL Pipeline StandardsMedium

Approach for building an ETL pipeline that meets enterprise security, access control, and monitoring requirements.

InfrastructureETLQualityDecagon
Scaling Data Pipelines EffectivelyMedium

Approach for building data pipelines that scale in throughput, reliability, and operational visibility.

InfrastructureETLDecagon
More Pipelines questions with a free account

Sign up to see every question

Create a free account to unlock this list and practice real interview questions.

Get my prep plan
3
System Design3 questions · ~24 min
Design a Behavior-Based RecommenderHard

Design a recommendation system that uses user behavior to retrieve, rank, and re-rank items at scale.

ML RankingFeature StoreRecommendation SystemsDecagon
More System Design questions with a free account
4
Coding4 questions · ~32 min
Time and Space ComplexityMedium

Tests ability to analyze performance characteristics and choose efficient approaches.

Hash TablesArraysSortingDecagon
Dynamic Programming Problem SolvingHard

Tests problem-solving skills and correctness in dynamic programming approaches.

RecursionDynamic ProgrammingArraysDecagon
More Coding questions with a free account
5
Behavioral & Leadership10 questions · ~80 min
More Behavioral & Leadership questions with a free account
6
More topics1 question · ~8 min
Model Performance EvaluationEasy

Tests your ability to select metrics, validation strategy, and interpret results for ML models.

PrecisionAccuracyRecallDecagon
The finish line: interview-readyComplete all 25 questions to finish this plan.