Start practising

ATLASSIAN · SDE 2

Atlassian SDE 2 interview

The SDE 2 (mid-level software engineer) level at Atlassian is P40 Software Engineer, for engineers with about 2 to 5 years of experience. The rounds at this level, how each one is scored, and the questions to practise first.

From public candidate reports and Atlassian's careers pages, checked November 2026. Processes vary by team. AlgoRung is not affiliated with Atlassian.

Track my Atlassian prep
Atlassian titleP40 Software Engineer
ExperienceEngineers with about 2 to 5 years of experience
Interviews after screeningAbout 5
System design roundYes

The SDE 2 rounds, in order

  1. Phone / recruiter screen · 30 min

    A recruiter call about background, motivation, location and pay, where the target level gets set.

    At SDE 2: One or two problems, a little faster. Some companies mix in a design question.

  2. Phone / recruiter screen · 60 min

    An outsourced interviewer (Karat) runs it: about 20 minutes of quick-fire design or fundamentals questions, then one or two easy-to-medium coding problems.

    At SDE 2: One or two problems, a little faster. Some companies mix in a design question.

  3. Coding (DSA) · 60 min

    The 'Data Structures' half of the coding interview: an algorithm problem with follow-ups, scored on clean code, naming and testing your own work without being asked.

    At SDE 2: Two or three rounds at medium to hard level. You are expected to reach the optimal approach with fewer hints and to test without being asked.

  4. Low-level design / machine coding · 60 min

    The 'Code Design' half: build a small working component that can be extended, such as a popularity tracker, then handle new requirements, tie-breaks and concurrency.

    At SDE 2: The core round at many product companies: working, modular, extensible code with validation, error handling and tests, finished on time.

  5. System design (HLD) · 60 min

    A systems design discussion with no coding, where the interviewer adjusts the follow-ups to see how you adapt to new trade-offs.

    At SDE 2: Present at most companies. A sound end-to-end design with sensible components and basic scaling is enough.

  6. Hiring manager · 60 min

    One past project in depth, ownership, mentoring and how you collaborate.

    At SDE 2: Ownership of features, handling production issues, working with product and other teams.

  7. Behavioral · 45 min

    The values interview, usually led by someone outside engineering, with roughly one question per value and probing follow-ups.

    At SDE 2: Stories should show you owning features end to end and handling conflict maturely.

  8. Hiring committee

    An independent committee reviews all the feedback and the CV and makes the final call.

    At SDE 2: Committees can down-level you instead of rejecting.

  9. Team match · 30 min

    Approved candidates are sometimes placed on a team only afterwards, and some wait weeks for a match.

    At SDE 2: Committees can down-level you instead of rejecting.

What Atlassian interviewers look for

Behavioral rounds are based on the Company values: Open company, no bullshit, Build with heart and balance, Don't #@!% the customer, Play, as a team, Be the change you seek. Questions for each one.

Coding questions to practise for Atlassian SDE 2

Two or three rounds at medium to hard level. You are expected to reach the optimal approach with fewer hints and to test without being asked.

Difficulty
Topic
3 questions
  1. Lowest Common Ancestor of a Binary Tree Medium Trees & BST also Google, Meta, Netflix +1
  2. Merge Intervals Medium Intervals also Netflix, LinkedIn, Oracle
  3. Two Sum Easy Arrays & Hashing also Amazon, Microsoft, Swiggy

How the coding round is scored · The online assessment

System design at SDE 2

Every level gets a code design (LLD) round where you build and extend working code. P40 and above add an HLD round, usually framed around collaboration products like issue trackers and wikis. At P50 and P60 the bar shifts to deep trade-offs, scaling and cross-team impact.

All Atlassian system design questions

Questions people ask

How many rounds are in the Atlassian SDE 2 interview?

About 5 interviews after the screening: phone / recruiter screen, coding (dsa), low-level design / machine coding, system design (hld), hiring manager, behavioral, hiring committee, team match.

Is there a system design round for Atlassian SDE 2?

Yes. Every level gets a code design (LLD) round where you build and extend working code. P40 and above add an HLD round, usually framed around collaboration products like issue trackers and wikis. At P50 and P60 the bar shifts to deep trade-offs, scaling and cross-team impact.

What coding questions does Atlassian ask at SDE 2?

The same question pool is used across levels; the bar rises with level. Most reported: Lowest Common Ancestor of a Binary Tree, Merge Intervals, Two Sum.

What does Atlassian expect in coding rounds at SDE 2?

Two or three rounds at medium to hard level. You are expected to reach the optimal approach with fewer hints and to test without being asked.

SDE 2 interviews at other companies

SDE 2 interview questions across all companies · Behavioral questions