Shopify Interview Questions
Practice 73 real Shopify interview questions for 2026 — actual interview prompts with detailed solutions to accelerate your interview preparation. This collection emphasizes Coding & Algorithms and System Design first, then Analytics & Experimentation, Data Manipulation (SQL/Python), ML System Design, and Behavioral & Leadership, and covers roles including Software Engineer, Data Scientist, Machine Learning Engineer, and Data Engineer. Expect a coding-heavy process with pair-programming and system-design deep dives for engineers, product-metric case studies and experiment design for data roles, and take-home or modeling tasks for ML positions. For Software Engineers anticipate URL-shortener and multi-rover controller designs, caching and assignment systems, and live pair-programming on algorithmic problems. Data Scientists should prepare for product-measurement cases (piracy and App Store metrics), funnel-debugging, experiment design, analytics/BI hardening, and occasional algorithmic implementations like LRU caches. Machine Learning Engineers will see applied-system problems: fraud detection, hierarchical product classification, delivery-time prediction, simulation-based fleet/robot problems, and labeling strategy design. Data Engineers encounter session-analytics SQL and pipeline robustness. To prepare, blend timed coding practice, system-design sketching, product-metrics case work, and end-to-end ML system thinking.
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Compute Theme Similarity
Implement a small set of Python functions to detect likely pirated Shopify themes by comparing their extracted feature sets using the Jaccard similari...
Analyze Pirated Theme Usage
You work on the Shopify themes team. Some themes are known to be pirated copies of legitimate themes. Write SQL to analyze merchant usage of pirated t...
Grid Robot Command Simulator
Grid Robot Command Simulator You are building a small command-driven robot simulator. A single robot lives on a 2D grid and is controlled by a stream ...
Simulate rover movement on a grid
You are building a rover navigation simulator. The exercise is incremental: you implement a single rover on a 2D grid, then extend the design to many ...
Measure Shopify App Store Success
You are a Data Scientist working on the Shopify App Store, a marketplace that connects Shopify merchants with third-party app developers. Merchants us...
Diagnose Weekly Session Conversion Anomalies
You are a Data Scientist supporting an e-commerce platform. You receive a weekly time-series dashboard covering the past three years. The dashboard in...
Design a robot movement command system
Robot Movement (Pair Programming) You are given an empty starter repository (only a README). Implement a small, testable robot movement module that ca...
Analyze Pirated Theme Usage Impact
An e-commerce platform lets shops install marketplace themes. Some themes are paid, and a shop should have a valid purchase/license before using a pai...
Model Product Ranking
You are building a machine learning model for product ranking in an e-commerce marketplace. Given a user, context, and a set of candidate products, ra...
Design Personalized Product Feeds
Design an ML system for personalized product feeds in an e-commerce application. For each user request, the system should return a ranked feed of prod...
Implement a multi-rover Mars controller
Problem Build a small command-line “Mars Rover Controller” program. Single rover (v1) A rover starts at coordinate (0, 0) on an infinite 2D grid and i...
Build a Local URL Shortener
Implement a local URL shortener that runs on a single machine. Design a small library or service with two core operations: - shorten(long_url) -> shor...
Implement an LRU Cache
Problem Design and implement an LRU (Least Recently Used) Cache that supports the following operations in O(1) average time: - get(key): - Return th...
Build model to predict package delivery time
You are building an ML model to predict package delivery time (ETA) for shipments. Given historical shipping data (order created time, origin/destinat...
Design search autocomplete ML system
Design an ML-powered search autocomplete system that suggests query completions as the user types (e.g., after typing a prefix like "ipho" suggest "ip...
Design a rare-book lending and returns system
Design a rare-book lending and returns system System Design: Rare Books Circulation Across Multiple Branches Context Design a system to manage borrowi...
Design hierarchical product classification
Design an end-to-end machine learning system that classifies products into a hierarchical taxonomy such as department -> category -> subcategory. Assu...
Build a fraud detection model
Design a machine learning approach for detecting fraudulent transactions or user actions. Discuss: - How to define the prediction target and labels - ...
Design and implement a word-guessing game
Word-Guessing Game (Wordle-like) — Design and Implement Context Build a small, standalone command-line application that lets a user guess a secret wor...
Simulate robot moves on a grid
You are given an m x n grid and a robot that starts at position (r, c) (0-indexed). You are also given a string commands consisting of characters 'U',...