Atlassian Frontend Interview Experience: All 6 Rounds

Before I joined Uber, I went through Atlassian's frontend interview loop and got the offer. This is my Atlassian frontend interview experience, round by round, with the prep tips I'd give anyone going through it now.

I've long admired Atlassian for its engineering excellence, people-first culture and transparent processes. The interviews tested more than technical skill. They also showed me how much the company values collaboration and problem-solving.

The Atlassian interview process at a glance

My loop had six rounds:

1. A Karat interview on JavaScript fundamentals, HTML/CSS and browser-based coding.
2. A React coding round, where I built a reusable UI component in a live browser environment.
3. A JavaScript logic round on core JavaScript and functional programming, with no UI.
4. A system design round, where I designed a browser feature with a frontend focus.
5. A managerial round with the hiring manager, a scenario-based conversation of about 60 minutes.
6. A values interview on Atlassian's five core values.

After the six rounds came a team matching discussion, and then the offer.

It started with a referral

Like many opportunities in tech, this one started with a referral. Once my profile was shortlisted, the recruitment team reached out quickly to schedule the first round.

From the start, the process felt well-structured and transparent. Each step had a clear purpose, and communication stayed consistent throughout.

Round 1: Karat interview

What it covered: JavaScript fundamentals, HTML/CSS and browser-based coding.

The first round was run by Karat, a technical interview platform that partners with many top companies. The questions went beyond syntax. They focused on how you think and approach a problem, and on how clearly you can turn your ideas into code.

It felt more like a conversation about problem-solving than a test. The interviewer encouraged clear, readable code and didn't expect "tricky" solutions. I appreciated that.

For practice, I wrote a separate guide with diagrams and solutions: Atlassian Karat Interview Questions.

Round 2: React coding round

What it covered: building a reusable UI component in React, live in the browser.

This was a hands-on React coding round in a live browser environment, and I could use any UI library or framework I wanted. The task was to build a reusable UI component. It tested practical, real-world frontend engineering skills.

What I liked most was that the round was progressive. Once I solved the first part, more layers of complexity were added. Beyond the coding itself, that tested whether I could extend and scale an existing solution under time pressure.

The round was challenging and fun. It was very close to how frontend developers actually work on production features.

Round 3: JavaScript logic round

What it covered: core JavaScript and functional programming, with no UI at all.

This round was entirely logic-driven. The goal was to write correct JavaScript functions for the problems I was given, and to keep them clean and efficient.

The questions started simple, with basic logic and syntax, and got harder as we went. The round was testing depth of understanding, problem decomposition and code elegance.

It was one of the parts of the process I enjoyed most, because it tested pure reasoning and coding fluency.

Round 4: Frontend system design

What I was asked: design a browser feature.

Atlassian's system design round stood out for its frontend focus. The design had to cover scalability, state management, caching, performance and user experience. The interviewer wanted to understand how I think architecturally and how I approach trade-offs when designing large-scale applications.

We discussed:

• Structuring components for scalability
• Choosing between client-side and server-side rendering
• Managing application state effectively
• Handling failures and optimizing for performance

How I approached it: I used the RADIBDO framework in this round. The discussion went deep into how engineering and design principles meet product goals.

For worked examples of a frontend design answer, read my step-by-step walkthroughs of Google Docs and Trello.

Round 5: Managerial round

Format: a scenario-based conversation with the hiring manager, about 60 minutes.

We talked about:

• How I handle conflicts in a team
• How I make architectural decisions under ambiguity
• My leadership style and how I mentor junior engineers
• Situations where I had to balance quality with delivery timelines

There was no rapid-fire Q&A. It felt like a dialogue about leadership, ownership and impact. I appreciated the emphasis on communication and collaboration, because they matter as much as technical excellence.

To prepare your stories for this round, work through these 20 behavioral interview questions for software engineers.

Round 6: Values interview

What it covered: Atlassian's five core values.

1. Open company, no bullshit
2. Build with heart and balance
3. Don't #@!% the customer
4. Play, as a team
5. Be the change you seek

It was a thoughtful discussion. The interviewer shared real-world situations to understand how I think, act and make decisions.

Memorizing the values wasn't the point. The interviewer was looking at whether my mindset and actions lined up with them naturally. The round gave me a clear sense that Atlassian invests deeply in cultural alignment and human values, as well as technical ability.

Team matching

After I cleared all the rounds, I had a team matching discussion. I learned about the team's goals, its ongoing projects and how my experience could contribute.

It was a two-way conversation more than an interview. The aim was to see whether the team's mission fit my career aspirations.

The result: an offer from Atlassian

I received the offer from Atlassian, and I was thrilled.

In the end I chose another opportunity, with Uber. Atlassian's process is still one of the most structured, transparent and insightful interview experiences of my career. It showed me that engineering excellence can sit alongside empathy and collaboration in one organization.

How to prepare for the Atlassian frontend interview

These are the tips I'd give anyone preparing for this loop:

1. Learn about classes in JavaScript.
2. Don't overcomplicate the early questions. They start simple, and in my React and JavaScript logic rounds the difficulty went up step by step.
3. Choose clarity over complexity. Clean, readable solutions always stand out, and my Karat interviewer encouraged readable code over tricky solutions.
4. Strengthen your JavaScript and React fundamentals. Three of my six rounds were JavaScript, HTML/CSS or React coding. You can practice with the Mentoxis frontend interview questions and plan your study with the 2026 frontend interview roadmap.
5. Be ready to discuss trade-offs in your design and implementation choices. My system design interviewer wanted to hear how I approach them.
6. Reflect on your values and teamwork experiences, because they matter more than you think. Two of my six rounds, the managerial round and the values interview, were about exactly this.

Related reading

• 12 LeetCode patterns that cover 80% of FAANG questions, if your other interviews include DSA rounds
• Uber frontend interview experience, round by round

Atlassian interview FAQ

How many rounds are in the Atlassian frontend interview?

My loop had six: a Karat interview, a React coding round, a JavaScript logic round, system design, a managerial round and a values interview. Team matching came after those.

What does the Atlassian Karat round test?

Mine tested JavaScript fundamentals, HTML/CSS and browser-based coding. The interviewer cared about how I approached the problem and how clearly I turned my ideas into code.

Can you use a UI library in the Atlassian React coding round?

In my round, yes. It ran in a live browser environment, and I could use any UI library or framework I wanted.

What is asked in the Atlassian frontend system design round?

I was asked to design a browser feature. We covered scalability, state management, caching, performance and user experience, including client-side vs server-side rendering and handling failures.

What are Atlassian's values for the values interview?

Open company, no bullshit. Build with heart and balance. Don't #@!% the customer. Play, as a team. Be the change you seek. The round checks whether your mindset and actions match them, so prepare real stories instead of reciting the list.

How long is the Atlassian managerial round?

Mine lasted about 60 minutes. It was a scenario-based conversation with the hiring manager.

How did you get the Atlassian interview?

Through a referral. Once my profile was shortlisted, the recruitment team reached out to schedule the first round.

Final thoughts

Atlassian's process reminded me that the best companies are looking for great teammates as well as great engineers.

Thanks to everyone who supported me along the way. I hope this walkthrough helps you feel more confident and prepared for your next interview, at Atlassian or anywhere else.

If you want to practice before the real thing, I take 1:1 JavaScript, frontend system design and behavioral mock interviews on Mentoxis. Book a session with me here.

Build with heart and balance, always.

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Originally published on Medium in JavaScript in Plain English on Nov 1, 2025. Edited and restructured for Mentoxis.