Atlassian's coding interviews are medium to hard, similar to Google and Meta, but uniquely include a Bar Raiser round focused on leadership principles. Most candidates need 2-3 months of preparation, solving 150-200 LeetCode problems with emphasis on mediums and hards, while mastering all 16 Leadership Principles. The process tests both technical depth and value alignment comprehensively.

Core DSA patterns like graphs, trees, dynamic programming, and recursion are essential. For SDE-2 and above, system design on scalability and distributed systems is critical. Behavioral rounds require STAR-formatted responses that demonstrate Atlassian's values, so prepare real examples from your experience.

Candidates often underprepare for the Bar Raiser behavioral round and fail to treat coding as collaborative pair programming. Vague, non-metric-driven stories in behavioral answers and not reviewing Atlassian's products are frequent pitfalls. Practice explaining your thought process aloud and tailor examples to show impact.

Explicitly link your technical solutions to Atlassian's values, such as teamwork or customer focus, during coding and design discussions. Demonstrate clear communication and collaboration in pair programming rounds. Ask insightful questions about team projects, technical challenges, or company impact to show genuine interest and preparation.

Scheduling all rounds, including the Bar Raiser, usually takes 4-6 weeks after application. Feedback takes 1-2 weeks post-interviews, but the Bar Raiser may extend this. Offers are commonly extended within 2-4 weeks after the final round, though team-specific variations occur.

SDE-1 focuses on clean coding and problem-solving fundamentals. SDE-2 adds system design and expects mentorship examples, while SDE-3 emphasizes architectural decisions and strategic impact. The depth of system design questions increases with level, so tailor your preparation accordingly.

LeetCode for DSA (prioritize medium/hard), Atlassian's careers page for Leadership Principles, and 'Designing Data-Intensive Applications' for system design. Use platforms like Interviewing.io for mock interviews with ex-Atlassian interviewers and study Atlassian's engineering blog for product context.

Atlassian promotes an 'open company' culture with collaboration, transparency, and customer obsession. SDEs are expected to impact products and teams while embodying values like teamwork. Behavioral interviews assess cultural fit, so reflect on experiences that demonstrate these principles and ask about team dynamics.