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Prep plan
Updated weekly · Last refresh Aug 30

1X Technologies AS AI Engineer Interview Questions

The questions to prepare for a 1X Technologies AS AI Engineer interview. Questions from real interview reports rank first. Updated weekly.

25questions
~4htotal time
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1
CodingStart here. 5 questions · ~51 min
Reverse Linked ListEasy
Practice

Reverse a singly linked list iteratively and recursively in Python.

RecursionLinked Listsbasics1X Technologies AS
Implement Gradient DescentEasy
Practice

Implement batch gradient descent to fit a one-feature linear model for Plymouth Rock Assurance claim severity estimates.

MathArraysGradient Descent1X Technologies AS
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2
System Design3 questions · ~30 min
Design an LLM Serving PlatformHard

Design an LLM serving system that balances latency, cost, scalability, and safety for production traffic.

Cold StartFeature StoreModel Serving1X Technologies AS
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3
Generative AI & LLMs3 questions · ~30 min
Reduce Hallucinations in LLM AnswersEasy

Explain LLM hallucination and give three practical ways to reduce it using grounding, prompting, and evaluation.

HallucinationPrompt EngineeringRAG1X Technologies AS
Design a Multi-Agent Research AssistantMedium

Design a grounded multi-agent assistant that plans, retrieves, and synthesizes answers under strict latency, cost, and hallucination limits.

Prompt EngineeringRAGLLM Agents1X Technologies AS
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4
Machine Learning6 questions · ~61 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 Tradeoff1X Technologies AS
Handling Missing Values in MLEasy

Explain practical strategies for handling missing values in a supervised learning workflow, from diagnosis to modeling and validation.

Cross-ValidationFeature EngineeringRegularization1X Technologies AS
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5
Behavioral & Leadership6 questions · ~61 min
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6
More topics2 questions · ~20 min
Model Evaluation MetricsEasy

Tests your ability to select appropriate metrics based on task type and business or research goals.

PrecisionAccuracyRecall1X Technologies AS
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The finish line: interview-readyComplete all 25 questions to finish this plan.