System designLast reported Aug 2026
Online Bookseller Platform
Design a single-retailer bookstore that serves catalog discovery and converts carts into correctly reserved physical-book orders.
Open practiceDatabricks interview practice
Databricks interview questions and coding practice. Start with verified evidence.
Practice from 31 Databricks-tagged public coding problems, organized only by the stage, topic, difficulty, and recency metadata FastPrep can verify. The broader public catalog also includes 9 system-design exercises, 2 low-level-design exercises.
- Catalog
- 42 public practice assets (31 coding)
- Start here
- Use the stage named in your invitation
- Evidence
- OA · Phone · Onsite metadata, shown in context
OA practice path
Online Assessment
Build a timed implementation rhythm from prompt to edge cases. Problems are ranked by repeated public catalog sightings.
16 Databricks-tagged Online Assessment problems available.
| Company | Problem | Difficulty | Public evidence | Action |
|---|---|---|---|---|
DADatabricks | Bouncing Diagonal WeightsMatrixSorting | Medium | 2 public reportsLast reported Aug 2024 | Practice |
DADatabricks | Minimize CommuteMatrixBreadth-First Search | Medium | 1 public reportLast reported Apr 2026 | Practice |
DADatabricks | Difference Between Sums of PositionsArray | Easy | 1 public reportLast reported Sep 2024 | Practice |
DADatabricks | Longest Common Prefix of Number PairsTrieString | Medium | 1 public reportLast reported Sep 2024 | Practice |
DADatabricks | Subarray CountingArraySliding Window | Easy | 1 public reportLast reported Sep 2024 | Practice |
DADatabricks | Write 'Y' on MatrixMatrixMath | Medium | 1 public reportLast reported Sep 2024 | Practice |
DADatabricks | Binary String RequestsPrefix SumString | Medium | 1 public reportLast reported Aug 2024 | Practice |
DADatabricks | Check Pattern PresenceStringSimulation | Easy | 1 public reportLast reported Aug 2024 | Practice |
DADatabricks | Count Triples with DifferenceHash TableMath | Medium | 1 public reportLast reported Aug 2024 | Practice |
DADatabricks | Goto Largest BucketHash TableSimulation | Easy | 1 public reportLast reported Aug 2024 | Practice |
DADatabricks | Array ManipulationHash TableSimulation | Medium | 1 public reportLast reported Aug 2024 | Practice |
DADatabricks | Adventure to Count Maximum MovesMatrixBreadth-First Search | Medium | 1 public reportLast reported Aug 2024 | Practice |
DADatabricks | Count Cyclic PairsStringHash Table | Medium | 1 public reportLast reported Aug 2024 | Practice |
DADatabricks | Push and Fall BoxesMatrixSimulation | Medium | 1 public reportLast reported Aug 2024 | Practice |
DADatabricks | Count Distinct PairsHash TableString | Medium | 1 public reportLast reported Aug 2024 | Practice |
DADatabricks | Lamps IlluminationArrayIntervals | Easy | 1 public reportLast reported Mar 2024 | Practice |
Phone practice path
Phone Screen
Practice solving while explaining assumptions, tradeoffs, and complexity. Problems are ranked by repeated public catalog sightings.
| Company | Problem | Difficulty | Public evidence | Action |
|---|---|---|---|---|
DADatabricks | Find First Anagram IndexStringSliding Window | Easy | 2 public reportsLast reported Aug 2026 | Practice |
DADatabricks | Snapshot Set IteratorDesignHash Table | Medium | 2 public reportsLast reported Jul 2026 | Practice |
DADatabricks | Circuit Breaker Database FailoverArrayDesign | Medium | 1 public reportLast reported Aug 2026 | Practice |
DADatabricks | Customer Revenue with Direct ReferralsSortingDesign | Medium | 1 public reportLast reported Aug 2026 | Practice |
DADatabricks | Ordered IP FirewallArrayString | Medium | 1 public reportLast reported Aug 2026 | Practice |
DADatabricks | Encrypted File Count and Minimum TimeTreeDynamic Programming | Hard | 1 public reportLast reported Aug 2026 | Practice |
DADatabricks | Key-Value Store GET and PUT QPSDesignHash Table | Hard | 1 public reportLast reported Aug 2026 | Practice |
Onsite practice path
Onsite
Practice complete solutions and defend the choices behind them. Problems are ranked by repeated public catalog sightings.
| Company | Problem | Difficulty | Public evidence | Action |
|---|---|---|---|---|
DADatabricks | Rectangular K-in-a-RowDesignHash Table | Hard | 3 public reportsLast reported Aug 2026 | Practice |
DADatabricks | Snapshot Set IteratorDesignHash Table | Medium | 2 public reportsLast reported Jul 2026 | Practice |
DADatabricks | Cipher Cover Interval EditingArrayString | Medium | 1 public reportLast reported Aug 2026 | Practice |
DADatabricks | Hybrid Run-Length and Bit-Packing EncoderArrayString | Hard | 1 public reportLast reported Aug 2026 | Practice |
DADatabricks | Concurrent Buffered File LoggerDesignQueue | Medium | 1 public reportLast reported Aug 2026 | Practice |
DADatabricks | File Encryption Tree OptimizationTreeDynamic Programming | Hard | 1 public reportLast reported Aug 2026 | Practice |
DADatabricks | Key-Value Store with Hit CounterDesignHash Table | Medium | 1 public reportLast reported Jul 2026 | Practice |
DADatabricks | Blocking Keyed Cache with Waiting ReadersHash TableQueue | Medium | 1 public reportLast reported Jul 2026 | Practice |
DADatabricks | Durable Data WriterDesignSimulation | Medium | 1 public reportLast reported Jul 2026 | Practice |
01 · Stage workflow
Practice the stage you actually have next.
Use the mixed coding and design inventory to move from implementation practice into architecture tradeoffs without assuming a fixed Databricks interview loop. Your invitation and recruiter guidance remain the source of truth.
- 01
Online Assessment
Use the timing and format in your invitation as the source of truth. In practice, work without interruptions, budget time to read constraints, and reserve a final review window for boundary cases.
- State the input, output, and complexity target before coding.
- Implement one complete solution inside a fixed timebox.
- Run small, duplicate, empty, and boundary cases before finishing.
- 02
Phone Screen
Treat the problem as a conversation. Clarify the contract, describe the approach before implementation, and keep narrating meaningful decisions while you code and test.
- Ask clarifying questions instead of silently filling gaps.
- Explain the data structure and expected complexity.
- Walk through at least one example and one edge case aloud.
- 03
Onsite
Use the catalog's onsite labels as practice context, not as a promise about a specific loop. Focus on collaborative problem solving: compare approaches, implement cleanly, and explain how the solution behaves at scale.
- Compare a straightforward approach with the optimized one.
- Keep the implementation readable while discussing tradeoffs.
- Test the result, then name follow-up improvements explicitly.
02 · Broader technical practice
Practice beyond standalone coding questions.
These public Databricks-tagged exercises cover additional technical formats. They are included only when a verified catalog record and a crawlable practice page both exist.
System designLast reported Aug 2026
Design an LLM Content Safety Service
Design a low-latency safety service that evaluates LLM interactions against versioned policy while handling contextual and adaptive abuse.
Open practiceSystem designLast reported Jul 2026
Chat API and Database System
Design the APIs and durable database flows for a bounded text-chat service without requiring real-time push delivery.
Open practiceSystem designLast reported Jul 2026
Music Playlist System
Design a durable playlist service that preserves ordered tracks across edits and supports efficient reads.
Open practiceSystem designLast reported Jul 2026
Bookstore Batch Book-Price API
Design a read-only HTTP API that returns current prices for a bounded batch of bookstore editions with explicit freshness and partial-result semantics.
Open practiceLow-level designLast reported Jul 2026
Design a Locking Key-Value Store with Batch Writes
Design and implement a single-process key-value store whose individual and batched mutations remain atomic under concurrency.
Open practiceLow-level designLast reported Jul 2026
Design a WAL-Backed Batch Log Writer
Design an in-process log writer that durably commits ordered record batches, survives crashes, and handles concurrent clients safely.
Open practiceSystem designLast reported Jul 2026
WAL-Backed Batched Log-Writing System
Design a partitioned network service that acknowledges log batches through a replicated write-ahead log and asynchronously publishes immutable storage segments.
Open practiceSystem designLast reported Jul 2026
Design a Durable Local Event Writer
Design a thread-safe single-process writer that durably appends small opaque events to one local file under heavy concurrency.
Open practiceSystem designLast reported Jul 2026
Design a Chat Application Cache Architecture
Design an end-to-end private chat system with durable ordered messages and a partitioned recent-history cache that handles misses safely.
Open practiceSystem designLast reported Jul 2026
Design a Chat Application with Message and Thread Deletion
Design a real-time chat service whose message and thread deletions remain correct under concurrent sends and retries.
Open practice03 · Evidence boundary
What “Databricks interview questions” means here.
It means practicing transferable implementation, testing, and technical reasoning with public catalog assets FastPrep tags to Databricks. 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.
- Only Databricks-tagged FastPrep catalog problems appear above.
- Stage labels and report dates remain visible as context.
- No official, private, leaked, or proprietary questions are claimed.
04 · Plain answers
Databricks interview practice questions, answered plainly.
This page owns technical-practice intent for Databricks. Hiring activity, timelines, and market signals remain on the separate hiring-insights page.
01Does this page include Databricks design or project practice?
Yes, when the public catalog supports it. This page currently links 9 system-design exercises, 2 low-level-design exercises, and 0 project-coding exercises tagged to Databricks. Empty formats are omitted rather than padded with generic recommendations.
02Is FastPrep affiliated with Databricks?
No. FastPrep is an independent interview-preparation product and is not affiliated with Databricks. The page uses FastPrep's public practice catalog and does not claim official, private, leaked, or proprietary employer questions.
03How are Databricks problems assigned to interview stages?
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.
04Which Databricks interview stage should I practice first?
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.
05Does this page predict the Databricks interview process?
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
Pick a problem. Solve it end to end.
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