Atlassian frontend interviews start with a Karat screen, then test production-quality JavaScript, React UI coding, product-focused system design, and values.
This guide is built from 40 Atlassian interview reports shared by FrontendLead members between November 2023 and May 2026, cross-checked against Atlassian’s official engineering interview handbook. You’ll learn what each round looks like, which topics each round tests, how Atlassian grades code at P40 and P50, and a prep plan that maps every round to practice on FrontendLead.
The single biggest lesson from member reports: Atlassian grades code quality, not just correctness. One senior candidate solved every requirement in both coding rounds and was still told “not aligned for P50” because the code used older promise chains instead of async/await and didn’t separate React from plain JavaScript logic. Write clean, well-named, modern code from the first line.
By Shivam Bhalla · Updated
01Atlassian frontend interview at a glance
- Timeline
- About 3 to 6 weeks; one member got an offer within 48 hours of the onsite
- Process
- Recruiter call, Karat screen, onsite loop, hiring committee
- Onsite
- Usually 4 to 5 rounds: JavaScript coding, browser (UI) coding, system design, values, manager
- Coding language
- Your choice per Atlassian; JavaScript or TypeScript for frontend rounds
- Frameworks
- React is most common; members were also told vanilla JS or Angular was fine
- Signature topic
- Production-ready JavaScript utilities: caching, async clients, event batching
- Screen format
- Karat: JS output questions or a short design talk, then HTML/CSS and vanilla JS coding
- Leveling
- P40 (mid-level) and P50 (senior) are most reported; level is assessed throughout the loop
- Decision
- An independent hiring committee reviews interview feedback
02Atlassian frontend interview process
Atlassian’s handbook describes coding, system design, manager, and values interviews, followed by a hiring committee. Members add one stage the handbook doesn’t emphasize: a third-party Karat screen at the start.
- 1
Recruiter call
About 30 minutesExpect logistics, salary expectations, and a few leveling questions such as your most challenging task, technical leadership, and a project you owned end to end. One member was nudged toward a full-stack role for more team-matching options; full-stack candidates can choose a frontend or backend lean, which changes the format slightly.
- 2
Karat screen
60 minutes, scheduled almost any timeKarat runs this round on Atlassian’s behalf. Members describe two parts. The first is either about 20 minutes of rapid JavaScript output questions (coercion, closures, hoisting,
setTimeoutand promise ordering) or a 20-minute verbal design walk-through of an end-to-end product flow. The second part is coding: build a UI from a mockup in HTML and CSS, then a data-fetching task in vanilla JavaScript. The exact prompts are in the members-only sections below. One P40 member said Karat offers a redo if the first attempt goes badly. - 3
JavaScript coding round
About 60 minutesA practical, framework-free problem: a small, realistic utility involving caching, async request handling, event batching, or instrumentation. Interviewers expect modern syntax, clean structure, and edge-case handling.
- 4
Browser coding round
About 60 minutesBuild a UI component in the browser, usually in React. Classic interactive components are the most common prompts. You may be allowed to use your own IDE. Follow-ups scale the problem up: larger inputs, lazy-loaded data, URL state, or config-driven rendering.
- 5
System design, values, and manager rounds
About 60 minutes eachFrontend system design usually centers on Atlassian’s own products. The values round is often run by someone outside the team, possibly from sales, HR, or support. The manager round covers projects, collaboration, and where you want to grow.
- 6
Hiring committee
A few days to 2 weeksAtlassian says an independent hiring committee reviews interview feedback and your CV, separate from your interviewers. Level is part of this decision, so a strong coding round with rough code can still land you at P40 instead of P50.
Members only
The Karat screen: what to expect and how to pass
4 real Atlassian interview questions
Every prompt members reported, with the round, the level, and the follow-ups interviewers asked.
Members only
Coding rounds: questions Atlassian candidates were asked
9 real Atlassian interview questions
Every prompt members reported, with the round, the level, and the follow-ups interviewers asked.
Members only
Writing production-ready JavaScript for Atlassian
The exact Atlassian interview prompts
Every prompt members reported, with the round, the level, and the follow-ups interviewers asked.
Members only
Atlassian frontend system design questions
5 real Atlassian interview questions
Every prompt members reported, with the round, the level, and the follow-ups interviewers asked.
07Values and manager interviews at Atlassian
Atlassian gives values a dedicated round, and members say it’s structured around STAR answers. Atlassian’s handbook says the values interviewer often comes from outside your team, such as sales, HR, or customer support, so avoid deep jargon.
Atlassian’s five values are:
- Open company, no bullshit: a time you shared bad news early or gave honest feedback.
- Build with heart and balance: a time you balanced speed with quality or sustainable pace.
- Don’t #@!% the customer: a time you pushed back on something that would hurt users.
- Play, as a team: a time you helped another team succeed or resolved a conflict.
- Be the change you seek: a time you fixed a process or tool nobody owned.
Questions members reported: your most challenging task, a time you showed leadership, how you resolve conflict, whether you have given constructive feedback, how you take feedback, your most interesting project, and “Why Atlassian?”
Manager round. Atlassian says to prepare a past project or two: who you worked with, the technical challenges, and the business reason the project existed. Members were asked about projects that spanned more than a few weeks and about communicating with stakeholders. Include the “why” behind the work, not just the “what.”
“Our checkout error rate doubled after a release. I posted in the incident channel before I knew the cause, rolled back within 20 minutes, and wrote the postmortem that added a canary step to our deploy.”
08P40 vs P50: what changes by level
Most members interviewed for P40 (mid-level, roughly SWE II) or P50 (senior). The rounds are the same, so level comes from how you perform in them. Confirm your target level with your recruiter.
| Signal | P40 | P50 |
|---|---|---|
| JavaScript round | Working utility with core edge cases | Production-ready in one pass: modern syntax, naming, docs, testability |
| Browser round | Working component and first follow-up | Clean separation of logic and view, all scale-ups handled |
| System design | Clear components, state, and API calls | Normalized state, pagination, optimistic updates, and trade-offs you drive |
| Manager and values | Owned features with clear impact | Led projects across teams and stakeholders |
09How to prepare for the Atlassian frontend interview
Atlassian’s loop is predictable, so prepare round by round. Skip LeetCode hards; spend that time on clean JavaScript and product-focused system design.
| Days | Round | Practice |
|---|---|---|
| 1 to 2 | Karat output questions | Trivia questions on coercion, closures, hoisting, and the event loop |
| 3 to 4 | Karat HTML, CSS, and vanilla JS | Handbook Layout, To-do App without React |
| 5 to 7 | JavaScript utilities | FeatureFlag, API Retry, Event Logger I |
| 8 to 10 | Browser coding | Tic Tac Toe, File Navigation, Tabs |
| 11 to 12 | System design | Design Sprint Board, Form Builder |
| 13 | Values and manager | One STAR story per value, plus two project deep dives with business context |
| 14 | Mock loop | Re-solve one JS and one UI problem cleanly, then review your own code like a PR |
After each practice problem, do a 5-minute self-review: rename vague variables, convert any .then chains to async/await, and pull logic out of components. That habit addresses the most common reason members were down-leveled or rejected. Browse more on the coding questions page or the behavioral interview questions page.
10Atlassian frontend interview FAQ
How long is the Atlassian frontend interview process?
Usually three to six weeks from recruiter call to decision. Some loops move much faster: one member was invited to the onsite on the same day as the phone screen and had an offer within 48 hours of the onsite. The hiring committee step can add a few days.
What is the Atlassian Karat interview?
A 60-minute screen run by Karat for Atlassian. Frontend candidates typically get JavaScript output questions or a short verbal design question, then an HTML/CSS layout task and a vanilla JavaScript data-fetching task. Members said Karat offers flexible scheduling, including weekends.
Does Atlassian ask LeetCode questions for frontend roles?
Rarely. Atlassian’s handbook lists data structures and code design as the two coding parts, but frontend members mostly got practical problems: JavaScript utilities and interactive UI components. A few older reports include a classic data structure or graph problem.
Can I use React in Atlassian interviews?
Yes for browser coding rounds, and members were told any framework or vanilla JS is fine. The Karat screen often requires plain HTML, CSS, and JavaScript, so practice without React too.
What is the Atlassian values interview?
A behavioral round about Atlassian’s five values, often run by someone outside the hiring team. Members describe STAR-format questions about collaboration, ownership, feedback, and conflict.
What is the difference between P40 and P50 at Atlassian?
P40 is mid-level and P50 is senior. Members report that P50 interviewers expect production-quality code on the first pass, with modern syntax and clean separation of concerns, while P40 focuses more on working solutions.
What system design questions does Atlassian ask frontend engineers?
Prompts mirror Atlassian’s own collaboration products, with follow-ups on normalized state, pagination, drag and drop, and optimistic updates. The exact prompts are in the members-only sections above.
Real Atlassian questions and reports
Verified Atlassian questions
Candidate interview reports
- Atlassian interview experience
- Atlassian FE interview
- Atlassian - Senior Frontend engineer - Onsite
- Atlassian- OA-karat(initial screen) - Software engineer (p40)
- Atlassian Karat FE
- Senior Frontend Software Engineer - coding
- Atlasssian Hr Screnning
- Atlassian - FrontEnd Engineer - Phone Screen
- Atlassian FE Karat
- Atlassian Karat FE Phone screening