Scale AI Coding Interview Questions

These are the 8 Scale AI coding interview questions AceOffer has reconstructed from candidate reports, sorted by how often each was reported. Party Time Blocks and Dead-Zone Hours leads at 12×. Every question shows when it was last reported; the catalog refreshes monthly.

Part of the full catalog of Scale AI interview questions, covering every round.

Key facts

•8 distinct coding questions indexed
•48 candidate reports across those questions
•Most reported: Party Time Blocks and Dead-Zone Hours — 12× (last seen March 2026)
•Refreshed monthly · last updated October 2026

Which Scale AI rounds ask coding questions?

Scale AI draws coding questions from the rounds below. Counts are distinct questions, not times asked.

About 60 minutes, one multi-part coding problem on HackerRank with screen sharing and pre-written tests, often paired with a 30-minute hiring-manager chat. Poker hand rules (early 2025), party time blocks (2025 to early 2026), a task scheduler with subtasks (2026) and a four-player card game (mid-2026).4 questions

Most reported: Party Time Blocks and Dead-Zone Hours — 12×

A debugging round in an existing project-assignment codebase with three failing tests; a backend practical that reads CSV files into JSON behind a local endpoint and then classifies records with an LLM API, with follow-ups on validation and scaling; on some loops a LeetCode-style grid problem; and for frontend candidates a React practical.4 questions

Most reported: Backend Practical: CSV to JSON, Then LLM Classification — 8×

Which Scale AI coding questions get asked most?

Sorted by candidate-report frequency. Click any question for the full breakdown.

Question	Round	Reported	Last seen
Party Time Blocks and Dead-Zone HoursFree You are given two lists of records for parties held on one day. Party records hold a party_id, a start timestamp and…	Phone Screen	12×	March 2026
Task Scheduler with Deadlines and Subtasks You build a task scheduler in three graded parts, one class that grows. In the reported round it is a 60-minute phone…	Phone Screen	10×	August 2026
Backend Practical: CSV to JSON, Then LLM Classification You are given two CSV files, users and tasks, and an LLM API key, and you build a small backend in three…	Coding	8×	August 2026
Poker Hand Rules with Wildcard Jokers You are given a Card class with a rank and a suit, and you write functions that check whether a hand of…	Phone Screen	6×	May 2025
Debug the Project-Assignment Codebase You are given an existing codebase that assigns contributors to projects, and three of its tests fail. You run the tests, trace…	Coding	6×	May 2026
Four-Player Trick-Taking Card Game A phone-screen problem in three graded parts, built on classes you are given: Card, Deck and Player. Part 1 — Shuffle, deal…	Phone Screen	2×	August 2026
Neuron Grid State Update (LC 289 Variant) You are given a matrix of neurons and update it one step, in the style of LeetCode 289 (Game of Life) with…	Coding	2×	May 2026
Frontend Practical (React): Two Reported Versions A timed, multi-part frontend coding challenge for Scale AI's full-stack role. The second version below was on HackerRank; the first report does…	Coding	2×	August 2025

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FAQ

How many coding questions does Scale AI ask?▾

AceOffer has reconstructed 8 distinct Scale AI coding interview questions from 48 verified candidate reports, each with verbatim follow-ups and a last-reported date.

What is the most common Scale AI coding interview question?▾

Party Time Blocks and Dead-Zone Hours — reported 12 times, last seen March 2026.

How fresh is AceOffer's Scale AI coding question data?▾

The catalog is refreshed monthly from new candidate reports, and every question shows when it was last reported.

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