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Updated weekly · Last refresh Oct 17

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 daily.

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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
Coding: Two SumEasy
Practice

Find two indices whose values equal a target using a hash map in O(n) time.

Hash TablesArrays1X Technologies AS
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2
Generative AI & LLMs3 questions · ~30 min
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
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
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3
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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4
Machine Learning6 questions · ~61 min
Prevent Overfitting in ML ModelsEasy

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

Cross-ValidationBias-Variance TradeoffRegularization1X 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
Real-World Model EvaluationMedium

Tests your ability to design evaluation plans that reflect production data, drift, and user impact.

PrecisionAccuracyRecall1X Technologies AS
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