Build, test, explain
Clarify an original problem, implement a solution, test boundaries and explain complexity. Choose your language and practice time in the workspace.
Open coding round →BIG TECH / COMPANY-STYLE PRACTICE
Shopify-style preparation
Rehearse collaborative implementation, debugging and explaining your career decisions. Prepare for role-specific craft conversations.
14 original exercises selected by ResumeWorlds. These are preparation suggestions, with no claim that Shopify asked these questions or endorses ResumeWorlds.
Why these topics?
The official FAQ describes pair programming for R&D applicants, a Life Story conversation and role-dependent craft assessment. Solo repair practice rehearses useful skills; it is not a live pair-programming simulation or a universal Shopify interview loop.
Read the public preparation source →Source reviewed 2026-10-11. Role and interview formats can vary; confirm your actual process with your recruiter.
A useful practice round
Choose a coding exercise, explain the approach aloud, implement it and test edge cases. Then explain time and space complexity. For design, write assumptions, compare alternatives and respond to the pressure round. Runtime results require the isolated runner to be available.
Customize and save your round sequence →
Read, repair, verify
Work with intentionally faulty code. Find a counterexample, review your diff and verify the repair with the isolated runner. Record how you evaluated AI coaching.
Open read & repair →Design under pressure
State assumptions, compare architectures and respond to a changing constraint. Existing cited coaching stays separate from executed code correctness.
Open design scenario →Company-style selections are editorial practice suggestions. View topics and source →
14 of 14 original questions
Pair a mentoring budget
Count index pairs i < j whose activity costs add to the target budget. Equal values at different indexes count separately.
Find the first available slot
Given sorted availability scores, return the zero-based index of the first score at least the target. Return n if none qualifies.
Longest focused practice window
Each activity is labeled by an integer topic ID. Find the longest contiguous window containing at most k distinct topics.
Concurrent mentoring rooms
Mentoring sessions use half-open intervals [start, end). Find the minimum number of rooms needed. A room ending at time t can be reused by a session starting at t.
Majority topic ID
Return the topic ID occurring strictly more than n/2 times, or -101 if no such ID exists.
Count target-sum segments
Count nonempty contiguous segments whose sum equals the target.
Minimum batch processing rate
Each hour processes at most rate units from one workload; leftover hourly capacity is not shared. Find the minimum positive integer rate finishing all workloads within h hours.
Most non-overlapping sessions
Select as many sessions as possible with no overlap. Sessions are half-open [start,end), so touching endpoints are compatible.
Deadline reward schedule
Each job takes one time slot and earns its nonnegative reward only if completed by its integer deadline. Slots are numbered from one. Return maximum total reward; a job can run at most once.
Minimum log merge cost
Merge any two positive log sizes for cost equal to their sum; the merged log has that size. Repeat until one log remains. Return the minimum total cost.
Product catalog search
Search products by text, category and price while preserving stock freshness.
Payment webhook reconciliation
Consume provider payment events and maintain an auditable order payment state.
Multi-service order workflow
Coordinate checkout, inventory, payment and fulfillment across independent services.
Inventory holds across warehouses
Reserve product quantities during checkout across warehouses.