SaaS & dev tools · Sydney, Australia

Atlassian.

Jira, Confluence, Bitbucket, Trello and Loom, multi-tenant collaboration tools on Atlassian's cloud platform.

its questions lean on

rate limiting
cross-product platform services
crawling
multi-tenancy
clean extensible code

The rounds, as candidates describe them

Third-party screen (Karat)About 20 minutes of short system design scenario questions, then 30 minutes of coding.source ↗
Data structuresA practical data-structures problem with scale and multithreading follow-ups.source ↗
Code designWorking, extensible code for a design problem; the rate limiter is the common one.source ↗
System designA high-level design round.source ↗
Managerial and valuesA management round and an Atlassian values round, both able to change the level or the outcome.source ↗

Reported by candidates

From public interview write-ups; each links its source.

Design a Rate Limiter (LLD)Low-level design
LLD-03 · Design a Rate Limiter →IP-02 · Design a Rate Limiter →reported in:LeetCode Discuss · Atlassian Senior SWE, code design round, offer (2025) ↗LeetCode Discuss · Atlassian P4/SDE2, offer (2022) ↗LeetCode Discuss · Atlassian SDE 2 P4 Bangalore, offer (2021) ↗
Design a Tagging SystemSystem design
W09 · DAY 01 · Tenant Isolation Strategies →W07 · DAY 02 · Indexing Pipeline →W01 · DAY 04 · Hot Keys and Skew →reported in:LeetCode Discuss · Atlassian P50, tags management HLD (2025) ↗LeetCode Discuss · Atlassian Senior SWE Bengaluru, tags shared by Jira and Confluence (2024) ↗LeetCode Discuss · Atlassian P6 Sydney (2023) ↗
Design a Web CrawlerSystem design
IP-05 · Design a Web Crawler →W02 · DAY 05 · Distributed Cron & Job Scheduling →reported in:LeetCode Discuss · Atlassian Senior SWE, web scraper for nested URLs and images (2025) ↗LeetCode Discuss · Atlassian P6 Sydney (2023) ↗LeetCode Discuss · Atlassian Senior Backend (Node) (2022) ↗
Design a Distributed Job SchedulerSystem design
IP-17 · Design a Distributed Job Scheduler →W02 · DAY 05 · Distributed Cron & Job Scheduling →reported in:LeetCode Discuss · Atlassian Principal Engineer Bangalore (2024) ↗
Design a Snake GameLow-level design
no lesson for this one yetreported in:LeetCode Discuss · Atlassian P50, LLD round (2025) ↗LeetCode Discuss · Atlassian SDE-2 P4 Bengaluru, offer (2022) ↗
Design a Voting and Ranking SystemLow-level design
IP-14 · Design a Real-Time Leaderboard →reported in:LeetCode Discuss · Atlassian Senior Engineer P5, rank teams (2024) ↗LeetCode Discuss · Atlassian SSE P5, votes and ranking (2022) ↗
Design a URL RouterLow-level design
no lesson for this one yetreported in:LeetCode Discuss · Atlassian Senior Backend (Node), code design round (2022) ↗
What problems does consistent hashing leave unsolved?Concept
W01 · DAY 01 · Partitioning Deep-Dive →W01 · DAY 04 · Hot Keys and Skew →reported in:LeetCode Discuss · Atlassian Senior SWE, Karat scenario question (2025) ↗
What changes when you take a production app beyond one country?Concept
W09 · DAY 03 · Data Residency and GDPR →W01 · DAY 02 · Replication Trade-offs →reported in:LeetCode Discuss · Atlassian Senior SWE, Karat scenario question (2025) ↗

Likely, from what they build

Our pick, not a report: questions that fit Atlassian's products.

Design a Multi-Tenant SaaS PlatformSystem design
W09 · BOSS · Design a Multi-Tenant Enterprise SaaS Platform →W09 · DAY 01 · Tenant Isolation Strategies →W09 · DAY 02 · Noisy Neighbor Prevention →
Design Webhook DeliverySystem design
W02 · DAY 04 · Webhook Delivery System →W03 · DAY 04 · Dead Letters and Poison Pills →
Design a Collaborative EditorSystem design
SQ-20 · Google Docs Collaboration →W05 · DAY 04 · Conflict Resolution →
Design a Notification SystemSystem design
IP-06 · Design a Notification System →W06 · DAY 03 · Advanced Features →

Study path

Every lesson the questions above point to, once, in order.

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