System designLast seen Oct 2026
Design a Streaming Top-K Hitters System
Continuously rank the most frequent keys over recent and all-time windows.
Open practiceAtlassian interview practice
Atlassian Coding Interview and Assessment Practice Start with verified evidence.
Practice from 86 Atlassian-tagged public coding problems, organized only by the stage, topic, difficulty, and recency metadata FastPrep can verify. The broader public catalog also includes 29 system-design exercises.
- Catalog
- 115 public practice assets (86 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.
60 Atlassian-tagged Online Assessment problems available.
| Company | Problem | Difficulty | Public evidence | Action |
|---|---|---|---|---|
ATAtlassian | Minimum Sorted Erasure OperationsArrayDynamic Programming | Hard | 2 public reportsLast reported Jun 2024 | Practice |
ATAtlassian | Dice Roll SimulationDynamic ProgrammingArray | Hard | 2 public reportsLast reported Nov 2023 | Practice |
ATAtlassian | Maximum MEXArrayHash Table | Medium | 2 public reportsLast reported Oct 2022 | Practice |
ATAtlassian | K-Means ClusteringArrayBinary Search | Medium | 1 public reportLast reported Feb 2025 | Practice |
ATAtlassian | Planning ProductionGreedySorting | Medium | 1 public reportLast reported Feb 2025 | Practice |
ATAtlassian | Count Analogous ArraysArrayPrefix Sum | Medium | 1 public reportLast reported Mar 2024 | Practice |
ATAtlassian | Get Maximum ScoreArrayHash Table | Medium | 1 public reportLast reported Mar 2024 | Practice |
ATAtlassian | Better Compression 🦀StringHash Table | Easy | 1 public reportLast reported Mar 2024 | Practice |
ATAtlassian | Romanizer 🐡MathString | Easy | 1 public reportLast reported Mar 2024 | Practice |
ATAtlassian | Flower Bouquets 💐Dynamic ProgrammingString | Medium | 1 public reportLast reported Mar 2024 | Practice |
ATAtlassian | Binary Search Tree IteratorTreeStack | Medium | 1 public reportLast reported Nov 2023 | Practice |
ATAtlassian | Binary Tree Level Order TraversalTreeBreadth-First Search | Medium | 1 public reportLast reported Nov 2023 | Practice |
ATAtlassian | Design HashMapHash TableDesign | Easy | 1 public reportLast reported Nov 2023 | Practice |
ATAtlassian | Design Hit CounterQueueDesign | Medium | 1 public reportLast reported Nov 2023 | Practice |
ATAtlassian | Evaluate Reverse Polish NotationArrayStack | Medium | 1 public reportLast reported Nov 2023 | Practice |
ATAtlassian | Find Leaves of Binary TreeTreeDepth-First Search | Medium | 1 public reportLast reported Nov 2023 | Practice |
ATAtlassian | Generate ParenthesesStringBacktracking | Medium | 1 public reportLast reported Nov 2023 | Practice |
ATAtlassian | Greatest Common Divisor of StringsStringMath | Easy | 1 public reportLast reported Nov 2023 | Practice |
ATAtlassian | Leaf-Similar TreesTreeDepth-First Search | Easy | 1 public reportLast reported Nov 2023 | Practice |
ATAtlassian | Letter Combinations of a Phone NumberStringBacktracking | Medium | 1 public reportLast reported Nov 2023 | 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 |
|---|---|---|---|---|
ATAtlassian | Word Path Moving Only Right or DownHash TableString | Medium | 3 public reportsLast reported Feb 2026 | Practice |
ATAtlassian | Implement a Rate LimiterDesignHash Table | Medium | 2 public reportsLast reported Oct 2026 | Practice |
ATAtlassian | Underline Shortest Unique SubstringsArrayString | Medium | 2 public reportsLast reported Aug 2026 | Practice |
ATAtlassian | Can You Finish the Teleporter Board?GraphBreadth-First Search | Medium | 2 public reportsLast reported Jul 2025 | Practice |
ATAtlassian | First Dictionary Word Containing Target LettersHash TableString | Easy | 2 public reportsLast reported Apr 2025 | Practice |
ATAtlassian | Longest Consistent Activity StreakArrayDynamic Programming | Hard | 1 public reportLast reported Sep 2026 | Practice |
ATAtlassian | Music Player Operation SequenceArrayQueue | Medium | 1 public reportLast reported Sep 2026 | Practice |
ATAtlassian | Can a Dictionary Word Be Formed from Note Letters?Hash TableString | Easy | 1 public reportLast reported Feb 2026 | Practice |
ATAtlassian | Ordered Badge Entry and Exit ViolationsHash TableSimulation | Easy | 1 public reportLast reported Aug 2025 | Practice |
ATAtlassian | Two Sum with an Ordered Index PairArrayHash Table | Easy | 1 public reportLast reported Aug 2025 | Practice |
ATAtlassian | Badge Entry and Exit Count ViolationsArrayHash Table | Easy | 1 public reportLast reported Jul 2025 | Practice |
ATAtlassian | Wrap Text with Retained Boundary SpacesStringGreedy | Easy | 1 public reportLast reported Jul 2025 | Practice |
ATAtlassian | Group Users by Connect or DisconnectArrayHash Table | Easy | 1 public reportLast reported May 2025 | Practice |
ATAtlassian | Buildable Robots from Available Part TypesArrayHash Table | Easy | 1 public reportLast reported Apr 2025 | Practice |
ATAtlassian | Delivery Origins and Reachable DestinationsGraphTopological Sort | Medium | 1 public reportLast reported Apr 2025 | Practice |
ATAtlassian | Additional Supermarket Department VisitsHash TableString | Easy | 1 public reportLast reported Apr 2025 | Practice |
ATAtlassian | Assign Campers to the First Arriving CarGraphHash Table | Medium | 1 public reportLast reported Apr 2025 | Practice |
ATAtlassian | Reflow Text with Balanced HyphensStringGreedy | Medium | 1 public reportLast reported Mar 2025 | Practice |
ATAtlassian | Wrap Words into Hyphen-Separated LinesStringGreedy | Easy | 1 public reportLast reported Mar 2025 | Practice |
ATAtlassian | Distinct Positions After One Teleporter Board RollArrayHash Table | Easy | 1 public reportLast reported Mar 2025 | 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 |
|---|---|---|---|---|
ATAtlassian | Bounded Word Guess SolverArrayString | Easy | 1 public reportLast reported Sep 2026 | Practice |
ATAtlassian | Word Guess Feedback ColorsStringHash Table | Medium | 1 public reportLast reported Sep 2026 | Practice |
ATAtlassian | Merge Overlapping IntervalsArraySorting | Medium | 1 public reportLast reported Dec 2025 | Practice |
01 · Preparation plan
Connect compact representations to dependable operations.
The available Atlassian catalog is dominated by coding practice. A compression task, a scheduling-style optimization, and a time-aware counter provide three different implementation habits. The separate architecture audit can deepen reliability reasoning; it is not evidence that every applicant receives a design round. This is a suggested practice sequence, not the employer's interview process. Your invitation and recruiter guidance remain the source of truth.
- 01
Normalize a compressed representation
Use Better Compression to separate decoding, aggregation, and ordered output. Repeated symbols in different parts of the input should not accidentally become different identities.
- Write examples with multi-digit counts and repeated symbols.
- Aggregate before formatting the result.
- Explain the output-order rule independently of parsing.
- 02
Justify a production-planning choice
Start the planning exercise with a small exhaustive example, then identify the ordering property behind the efficient approach. Do not assume a greedy choice is safe without an exchange argument.
- Name the quantity your objective maximizes or minimizes.
- Compare alternative orders on a tiny instance.
- Test ties and an item that cannot be scheduled.
- 03
Bound a rolling counter
The hit-counter exercise asks you to preserve exactly the events relevant to a time window. Use it to discuss correctness at boundaries before considering reliability or scale.
- Define whether the lower time boundary is inclusive.
- Test several hits at the same timestamp.
- Explain how expired events leave memory.
02 · Broader technical practice
Practice beyond standalone coding questions.
These public Atlassian-tagged exercises cover additional technical formats. They are included only when a verified catalog record and a crawlable practice page both exist.
System designLast seen Oct 2026
Design a Responsive Product Catalog Search Frontend
Design the component tree and bounded query flow for a product grid that stays responsive as a user types.
Open practiceSystem designLast seen Oct 2026
Design a Distributed Rate Limiter
Design a multi-tenant distributed limiter that smooths priority and regular traffic under versioned quotas, retries, and partial failure.
Open practiceSystem designLast seen Oct 2026
Design a Collaborative Document Editor
Design a Docs- and canvas-like collaborative editor with convergent text and visual-object editing, anchored annotations, history, presence, and permissions.
Open practiceSystem designLast seen Sep 2026
Design an Idempotent Ledger Service
Design an append-only balanced ledger whose posting API returns one durable outcome across retries, races, and lost responses.
Open practiceSystem designLast seen Sep 2026
Design Cloud Usage Billing Infrastructure
Design retry-safe usage metering, versioned pricing, account invoices, reconciliation, and portal-visible usage across many cloud services.
Open practiceSystem designLast seen Sep 2026
Design a Product Feature Event Analytics Platform
Design an extensible event platform for distinct-user analysis, bounded raw troubleshooting, most-viewed URL ranking, and subscription-conversion measurement.
Open practiceSystem designLast seen Sep 2026
Design a Searchable Emoji Picker
Serve a localized, accessible emoji catalog with responsive search, deterministic selection, and privacy-bounded personalization.
Open practiceSystem designLast seen Sep 2026
Social Post Comments
Design the storage and serving path for comments attached to social posts.
Open practiceSystem designLast seen Sep 2026
Global Music Streaming Platform
Design global music search, personal libraries, creator uploads, and reliable playback, then audit a consistent-hash origin under balanced current load.
Open practiceSystem designLast seen Sep 2026
Audit a Service Architecture for Reliability
Review a service architecture, choose actionable signals, diagnose an incident, and define changes that support a four-nines objective.
Open practiceSystem designLast seen Jul 2026
Design a Product Authentication Platform
Design a shared first-party login and session platform with secure credentials, fast token validation, tested backups, and a 10× growth path.
Open practiceSystem designLast seen Jul 2026
Design a Large JSON and XML Transformation Service
Design a bounded-memory service that transforms a 300 GB JSON array on one 16 GiB, 8-core worker with durable job control and monitoring. Add a finite independent-record XML profile with explicit parser limits and restart context while preserving the JSON interface.
Open practiceSystem designLast seen Feb 2026
Delivery Status Architecture Audit
Audit delivery confirmation, status reads, authentication, failover, logging and deferred third-party work in a supplied architecture.
Open practiceSystem designLast seen Oct 2025
Design a Horizontally Scaled PostgreSQL Database
Partition a growing PostgreSQL workload across database shards and move ownership safely as capacity changes.
Open practiceSystem designLast seen Oct 2025
Reconcile Expected Requests Against Success Logs
Build a resumable read-only audit over database IDs and distributed success logs, distinguishing missing success evidence from incomplete coverage.
Open practiceSystem designLast seen Oct 2025
Review and Scale a Fixed-Stage Document Pipeline
Distinguish stage concurrency from completion rate, move a mandatory-pipeline bottleneck, and recover bounded accepted work during a slower stage or uncertain attempt.
Open practiceSystem designLast seen Aug 2025
Design Video Metadata Reads Under a Deadline
Choose and enforce consistency for video catalog fields and changing aggregates while returning a truthful result within a tight read deadline.
Open practiceSystem designLast seen Aug 2025
Post Author Friend Count Serving
Serve each post author’s friend count from a large changing social graph without per-post adjacency scans or silent projection drift.
Open practiceSystem designLast seen Aug 2025
Signing Notification Loss Recovery
Identify and safely recover missing signing invitations from incomplete evidence without inferring failures from absent success logs.
Open practiceSystem designLast seen Aug 2025
Cost-Aware Interactive Content Delivery
Design a private drawing-to-animal animation pipeline with reusable generic animations and fixed backgrounds, while controlling processing and delivery costs.
Open practiceSystem designLast seen Aug 2025
Resilient Sports Statistics Aggregation
Design a sports-statistics service that remains useful and honest when upstream providers are slow, rate-limited, unavailable, or respond successfully with bad data.
Open practiceSystem designLast seen Aug 2025
Video Platform Capacity Planning
Design an internal forecasting system that identifies the demand, resource, and price information needed to estimate a video platform's next-year infrastructure costs. Include expiring short videos through versioned media-lifecycle inputs and storage occupancy over time. The same planner supports configured forecast horizons and measured URL-parsing or optional opaque-inference resource profiles without borrowing video inputs.
Open practiceSystem designLast seen Jul 2025
Smart-Fridge Edge Processing Migration
Migrate fridge analytics from cloud computation to constrained deployed devices while preserving local operation, truthful remote status and recoverable updates.
Open practiceSystem designLast seen May 2025
Diagnose and Scale a Recipe Commerce Service
Diagnose a growing recipe-browse and ingredient-purchase service, protect purchase outcomes during read spikes, and validate a staged performance improvement.
Open practiceSystem designLast seen May 2025
Migrate an Ethernet Appliance to a Microcontroller
Assess and qualify a hardware platform port while preserving local behavior, bounded offline records, and truthful deployment status.
Open practiceSystem designLast seen Apr 2025
Optimize an Appointment Waitlist Offer Service
Prevent a declining queue head from stranding a doctor slot while preserving priority, exclusive offers and recoverable 30-minute reply decisions.
Open practiceSystem designLast seen Mar 2025
Crossword Hint Delivery
Compare server-fetched and preloaded text, image and video hints under device storage, offline availability and immutable puzzle revisions.
Open practiceSystem designLast seen Mar 2025
Diagnose and Scale a Multi-Region Cloud Service
Use load-balancer, application, and database evidence to evolve a regional monolith into a safe multi-region service with versioned infrastructure and reversible migrations.
Open practice03 · Evidence boundary
What “Atlassian interview questions” means here.
It means practicing transferable implementation, testing, and technical reasoning with public catalog assets FastPrep tags to Atlassian. 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 Atlassian-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
Atlassian interview practice questions, answered plainly.
This page owns technical-practice intent for Atlassian. Hiring activity, timelines, and market signals remain on the separate hiring-insights page.
01Should I infer Atlassian's current rounds from these stage counts?
No. The stage distribution describes FastPrep's available reports and may be uneven. Use it to find relevant practice, not to infer the employer's whole process. The coding collection and reliability exercise are preparation options; your recruiter and invitation determine the actual interview format.
02Is FastPrep affiliated with Atlassian?
No. FastPrep is an independent interview-preparation product and is not affiliated with Atlassian. The page uses FastPrep's public practice catalog and does not claim official, private, leaked, or proprietary employer questions.
03How are Atlassian 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 Atlassian 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 Atlassian 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