20 questions · from 6 interviews
Teradata interview questions
Every question candidates reported from their Teradata interviews, most frequently asked first. Each links to the write-up it came from, so you can see the round and how it went.
Teradata coding and DSA questions
- 01
Task Scheduler
LeetCode problem "Task Scheduler": Given a list of tasks represented by characters and a non-negative integer n representing the cooldown period, schedule the tasks to minimize the total intervals needed to complete all tasks while respecting the cooldown…
From # Teradata Cloud AI Engineer Interview Experience | 2 Years Experience | Rejected
- 02
Valid Parentheses
Given a string containing only the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if open brackets are closed by the same type of brackets, and open brackets are closed in the correct order.
Easy · From Teradata Interview for SWE intern
- 03
First Unique Character in a String
Given a string, return the index of the first non‑repeating character. If no such character exists, return -1.
Easy · From Teradata Interview for SWE intern
- 04
Insert Delete GetRandom O(1)
Design a data structure that supports insert(val), delete(val), search(val) and getRandom() operations in average O(1) time, without allowing duplicate elements.
Medium · From Teradata Interview for SWE intern
- 05
Design Insert Delete GetRandom with Duplicates
Redesign the data structure to support insert, delete, search, and getRandom operations in average O(1) time while allowing duplicate elements.
- 06
Minimum Window Substring
Given two strings S and T , find the minimum window in S which will contain all the characters in T (including duplicates). If there is no such window, return an empty string.
Hard · From Senior AI Engineer Interview experience | Teradata
- 07
Circular House Robber
The problem was Circular House Robber. I made a modification to also find the indexes of the robbed houses.
Easy · From Teradata Senior AI Engineer Interview Experience
- 08
Min Path Sum in 2D Grid
Given a 2D grid, find the minimum path sum from the top-left to the bottom-right cell. You can only move down or right.
Easy · From Teradata Senior AI Engineer Interview Experience
- 09
Count Prime Gap Balanced Subarrays
Problem 1: Count Prime Gap Balanced Subarrays
- 10
Insert Delete GetRandom O(1) - No Duplicates
Problem 2 : Insert Delete GetRandom O(1) - No Duplicates
- 11
Generate All Binary Strings with Wildcards
Given a binary string containing '' at multiple places, replace each '' with either '0' or '1' to find all such possible unique strings.
Medium · From Teradata SSE - Rejected
- 12
Linked List Cycle Detection and Removal
Given a singly linked list, detect if it has a cycle. If a cycle is present, find its length and remove it.
Medium · From Teradata SSE - Rejected
- 13
- 14
Tree Operations with Undo/Redo Functionality
Implement insert, delete operations for a tree data structure, and additionally, implement undo and redo functionalities, ensuring the original tree structure can be maintained through these operations.
Hard · From Teradata SSE - Rejected
Teradata system design questions
- 01
Rate Limiter Design
Design a rate limiter system. Explain requirements, possible approaches, design patterns, trade‑offs, scalability, and concurrency considerations.
From # Teradata Cloud AI Engineer Interview Experience | 2 Years Experience | Rejected
- 02
Scalable Data‑Processing Pipeline Design
Design a scalable data‑processing pipeline. Consider data ingestion, processing stages, fault tolerance, scaling, and performance.
From # Teradata Cloud AI Engineer Interview Experience | 2 Years Experience | Rejected
- 03
RAG System Design
Design a Retrieval‑Augmented Generation (RAG) system for an organization’s internal data, including integration with external tools, data ingestion, chunking, embedding generation, vector storage, retrieval, metadata filtering, reranking, access control,…
From # Teradata Cloud AI Engineer Interview Experience | 2 Years Experience | Rejected
- 04
Sensor Data Ingestion and Aggregation System Design
Design a system for ingesting sensor data from multiple devices, potentially located in remote locations. The system should then be able to report aggregated data for three windows: 1 minute, 1 hour, and 1 day.
Teradata other questions
- 01
Implement Random Method in Java
Explain how you would implement a random number generator in Java without using the built‑in Random class.
- 02
Teradata interview questions FAQ
What questions are asked in Teradata interviews?
Candidates reported 20 distinct questions across 6 Teradata interviews. 14 coding and DSA questions, 4 system design questions, 2 other questions.
How difficult are Teradata interview questions?
Of the questions candidates rated, 45% were easy, 36% medium and 18% hard.