Top 35
Prep plan
Updated weekly · Last refresh Aug 30

UBS AI Engineer Interview Questions

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

35questions
~6htotal time
Track your progressSign up free to work through all 35 questions and resume where you left off.
Start practicing free →
1
CodingStart here. 6 questions · ~60 min
Design an LRU CacheEasy
Practice

Implement an LRU cache in O(1) average time using a hash table and doubly linked list.

Hash TablesQueueLinked ListsUBS
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsUBS
More Coding questions with a free account
2
Generative AI & LLMs7 questions · ~70 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 AgentsUBS
More Generative AI & LLMs 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
Model Evaluation4 questions · ~40 min
Choose a Fraud ThresholdMedium

Decide the right threshold for a fraud detection system using precision, recall, and cost tradeoffs.

PrecisionThreshold TuningRecallUBS
More Model Evaluation questions with a free account
4
Machine Learning4 questions · ~40 min
L1 vs L2 RegularizationMedium

Explain how L1 and L2 regularization differ geometrically and probabilistically, grounded in a practical supervised learning example.

Feature EngineeringRegularizationSupervised LearningUBS
More Machine Learning questions with a free account
5
System Design4 questions · ~40 min
Design Feature Drift Monitoring SystemHard

Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.

Feature StoreFeature DriftModel ServingUBS
More System Design questions with a free account
6
Behavioral & Leadership8 questions · ~80 min
More Behavioral & Leadership questions with a free account
7
More topics2 questions · ~20 min
Explain Transformer Self-AttentionHard

Explain how transformer self-attention works, including its role in sequence modeling and why it scales better than RNNs.

Neural NetworksLanguage ModelsDeep LearningUBS
Preprocess Noisy Financial TextMedium

Assesses your practical data cleaning and NLP preprocessing workflow for messy financial text.

data cleaningETLUBS
The finish line: interview-readyComplete all 35 questions to finish this plan.