ZipRecruiter interview practice
Practice from 147 ZipRecruiter-tagged public coding problems, organized only by the stage, topic, difficulty, and recency metadata FastPrep can verify. The broader public catalog also includes 4 system-design exercises, 2 low-level-design exercises.
OA practice path
Build a timed implementation rhythm from prompt to edge cases. Problems are ranked by repeated public catalog sightings.
129 ZipRecruiter-tagged Online Assessment problems available.
| Company | Problem | Difficulty | Public evidence | Action |
|---|---|---|---|---|
ZIZipRecruiter | Track Maximum and Current RatingArraySimulation | Easy | 6 public reportsLast reported Oct 2023 | Practice |
ZIZipRecruiter | Dynamic Pair Sum QueriesArrayHash Table | Medium | 5 public reportsLast reported Sep 2024 | Practice |
ZIZipRecruiter | Simulate Orchard Rot SpreadMatrixBreadth-First Search | Medium | 4 public reportsLast reported Sep 2024 | Practice |
ZIZipRecruiter | Lamps and Control PointsIntervalsArray | Medium | 4 public reportsLast reported Sep 2024 | Practice |
ZIZipRecruiter | Match Panel Code SplitsString | Easy | 4 public reportsLast reported Sep 2024 | Practice |
ZIZipRecruiter | Minimum Increments for Stepwise TowersArrayGreedy | Medium | 4 public reportsLast reported Sep 2024 | Practice |
ZIZipRecruiter | Cycle ShiftArrayHash Table | Medium | 4 public reportsLast reported Feb 2024 | Practice |
ZIZipRecruiter | Exclusive Event EntryQueueSimulation | Medium | 4 public reportsLast reported Feb 2024 | Practice |
ZIZipRecruiter | Circular Memory Slot AllocatorSimulationArray | Medium | 4 public reportsLast reported Oct 2023 | Practice |
ZIZipRecruiter | Earliest Longest Bounded-Adjacent SubarrayArraySliding Window | Easy | 4 public reportsLast reported Oct 2023 | Practice |
ZIZipRecruiter | Check a Cyclic Next-Character StringStringSimulation | Easy | 4 public reportsLast reported Oct 2022 | Practice |
ZIZipRecruiter | Maximum Fish CaughtSortingGreedy | Easy | 3 public reportsLast reported Oct 2024 | Practice |
ZIZipRecruiter | Minimum Changes to Draw a YMatrixCombinatorics | Medium | 3 public reportsLast reported Oct 2024 | Practice |
ZIZipRecruiter | Apply Binary State OperationsArrayHeap | Easy | 3 public reportsLast reported Sep 2024 | Practice |
ZIZipRecruiter | Recursively Expanded Shell Command CountsArrayDynamic Programming | Medium | 3 public reportsLast reported Sep 2024 | Practice |
ZIZipRecruiter | Count Case-Insensitive Key ChangesStringSimulation | Easy | 3 public reportsLast reported Sep 2024 | Practice |
ZIZipRecruiter | Apply Bounded Health DeltasArraySimulation | Easy | 3 public reportsLast reported Sep 2024 | Practice |
ZIZipRecruiter | Earliest Common Meeting TimeArrayIntervals | Medium | 3 public reportsLast reported Sep 2024 | Practice |
ZIZipRecruiter | Count Colliding Object PairsArrayGeometry | Easy | 3 public reportsLast reported Sep 2024 | Practice |
ZIZipRecruiter | Square-Neighborhood Image BlurMatrixPrefix Sum | Medium | 3 public reportsLast reported Sep 2024 | Practice |
Phone practice path
Practice solving while explaining assumptions, tradeoffs, and complexity. Problems are ranked by repeated public catalog sightings.
| Company | Problem | Difficulty | Public evidence | Action |
|---|---|---|---|---|
ZIZipRecruiter | Restaurant Vote LeadersArrayHash Table | Easy | 4 public reportsLast reported Feb 2026 | Practice |
ZIZipRecruiter | Classify an Alien Dictionary OrderingGraphTopological Sort | Hard | 2 public reportsLast reported Mar 2022 | Practice |
ZIZipRecruiter | Neighboring Record IDsArrayHash Table | Easy | 1 public reportLast reported May 2026 | Practice |
ZIZipRecruiter | Most Frequent Word across Grouped ArraysHash TableString | Easy | 1 public reportLast reported Sep 2024 | Practice |
ZIZipRecruiter | Starting Value with the Longest Collatz ChainDynamic ProgrammingMath | Medium | 1 public reportLast reported Apr 2022 | Practice |
ZIZipRecruiter | Multiset Intersection of Three ListsArrayHash Table | Medium | 1 public reportLast reported Feb 2022 | Practice |
ZIZipRecruiter | Find the Smallest Magic IndexArray | Easy | 1 public reportLast reported Dec 2021 | Practice |
ZIZipRecruiter | Website Pair with the Most Common VisitorsHash Table | Medium | 1 public reportLast reported Nov 2021 | Practice |
ZIZipRecruiter | Center-Outward Number SpiralMatrixSimulation | Medium | 1 public reportLast reported Jun 2021 | Practice |
ZIZipRecruiter | Missing Ranges within Inclusive BoundsArrayTwo Pointers | Easy | 1 public reportLast reported Feb 2021 | Practice |
ZIZipRecruiter | Fibonacci Number with Constant Extra SpaceDynamic ProgrammingMath | Easy | 1 public reportLast reported Mar 2017 | Practice |
Onsite practice path
Practice complete solutions and defend the choices behind them. Problems are ranked by repeated public catalog sightings.
| Company | Problem | Difficulty | Public evidence | Action |
|---|---|---|---|---|
ZIZipRecruiter | Restaurant Vote LeadersArrayHash Table | Easy | 4 public reportsLast reported Feb 2026 | Practice |
ZIZipRecruiter | Sliding Window Rate LimiterArrayHash Table | Medium | 2 public reportsLast reported Oct 2022 | Practice |
ZIZipRecruiter | Sort an Integer Array in Ascending OrderSortingArray | Easy | 2 public reportsLast reported Apr 2022 | Practice |
ZIZipRecruiter | Classify an Alien Dictionary OrderingGraphTopological Sort | Hard | 2 public reportsLast reported Mar 2022 | Practice |
ZIZipRecruiter | Add Numbers Stored in Four-Digit ChunksLinked ListMath | Medium | 1 public reportLast reported Nov 2021 | Practice |
ZIZipRecruiter | Add Two Numeric Strings with CarryStringMath | Easy | 1 public reportLast reported Nov 2021 | Practice |
ZIZipRecruiter | Expand Decimal Digits into Runs of OnesStringSimulation | Easy | 1 public reportLast reported Nov 2021 | Practice |
ZIZipRecruiter | Solve a Sudoku BoardBacktrackingMatrix | Hard | 1 public reportLast reported Aug 2021 | Practice |
ZIZipRecruiter | Validate a Sudoku BoardArrayHash Table | Medium | 1 public reportLast reported Aug 2021 | Practice |
ZIZipRecruiter | Iterate Ragged Integer Lists VerticallyArrayMatrix | Easy | 1 public reportLast reported May 2017 | Practice |
ZIZipRecruiter | Min StackStackDesign | Medium | 1 public reportLast reported Feb 2017 | Practice |
01 · Preparation plan
ZipRecruiter searches often have job-search intent, so this page stays explicitly within software-engineering preparation. The coding set offers short record, string, and interval tasks that reward clear definitions of identity and counting. It does not claim to describe ZipRecruiter's recruiting product internals. This is a suggested practice sequence, not the employer's interview process. Your invitation and recruiter guidance remain the source of truth.
Extract each unique record ID before the first separator, then find the previous and next IDs for each query. The neighbors come from the original input order, not sorted IDs, similarity, or pair counting.
Triplets with unique characters is useful for practicing a small sliding window without unnecessary machinery. Every starting position should be considered exactly once.
The lamps-and-control-points exercise connects ranges with point queries. Choose sorting, prefix events, or direct checks based on the stated input size.
02 · Broader technical practice
These public ZipRecruiter-tagged exercises cover additional technical formats. They are included only when a verified catalog record and a crawlable practice page both exist.
Design a deliberately small URL-shortening core, then evolve it into a highly available service whose fixed logical shards can move safely as physical storage capacity grows.
Open practiceDesign a single-retailer shopping API whose login, session, cart, and order boundaries remain secure and retry-safe at scale.
Open practiceDesign and implement a single-process key-value store whose individual and batched mutations remain atomic under concurrency.
Open practiceModel an ordered playlist with stable entry identity, safe mutation contracts, and a bounded move implementation.
Open practiceDesign saved job searches that match new listings and deliver retry-safe immediate alerts or daily digests.
Open practiceDesign a URL shortener whose user-owned links support durable voting and queryable popularity rankings.
Open practice03 · Evidence boundary
It means practicing transferable implementation, testing, and technical reasoning with public catalog assets FastPrep tags to ZipRecruiter. It does not mean FastPrep has access to the company's assessments or any private interview bank.
Repeated public sightings and last-reported dates can help you prioritize practice, but they cannot predict the questions, format, or platform in a specific interview.
04 · Plain answers
This page owns technical-practice intent for ZipRecruiter. Hiring activity, timelines, and market signals remain on the separate hiring-insights page.
No. It is a technical-practice page for candidates preparing for engineering work associated with ZipRecruiter. The exercises are public catalog assets, not instructions for the recruiting product, recruiter interview questions, or evidence of a current hiring process.
No. FastPrep is an independent interview-preparation product and is not affiliated with ZipRecruiter. The page uses FastPrep's public practice catalog and does not claim official, private, leaked, or proprietary employer questions.
Stage labels come from FastPrep's public problem metadata. A problem can carry more than one reported stage, and hiring processes can change by role, level, location, and date. Treat the labels as preparation context, not a guarantee.
Start with the stage named in your invitation or recruiter message. If no stage is known, use the largest available set to build general problem-solving fluency, then rehearse explanation and testing separately.
No. Public catalog counts, stage tags, and last-reported dates can help prioritize practice, but they cannot predict a specific interview's questions, sequence, timing, or platform.
Your next stage, made concrete
Start with the stage named in your invitation, then use public evidence as context—not as a promise of what you will be asked.
Open the practice set