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# Atlassian Interview Experience | On-Campus FTE

• Difficulty Level : Medium
• Last Updated : 22 Sep, 2021

Round 1: Online Coding Round

The first round was hosted on Hackerrank. It consisted of 3 coding questions to be done in 90 minutes.  The questions were as follows :

1. A number is encoded such that the number is shift by one position and concatenated by column for k times to generated an encoded number. Given the encoded number, find the original number. For example, for k=3 and encoded string = “5XX25X325132X13XX1”, the decoded string is “5231” . It can be demonstrated as follows :
2. Given a number as a string, find the minimum number of parts the number can be divided such that each part is a prime number in the range of 1 to 10, 00, 000. The solution required dynamic programming.
3. Find the maximum sum path in a tree from one node to another. Note : The path may or may not go through the root node.

Round 2: Technical Interview – 1

The interviewer welcomed me into the room and asked me to introduce myself. He then asked me to tell about my project. I explained about node.js and how it enabled me to create a real time chat applications . They asked other question regarding its nuances. The interviewer then asked me a question related to backtracking. He then asked me what should I do if the stack memory overflowed. He was impressed when I said that iterratively solving the question by taking multiple stacks of my own and not using the system function stack would help us in that situation. He then asked me to iteratively solve the question. He then asked me some questions related to OS.

This round lasted for a total of around 50 minutes to 1 hour.I qualified this round. 4 candidates were shortlisted for the next round.

Round 3: Technical Interview – 2

This round lasted for a total of around 1 hour 30 minutes.It was a really great learning experience and enriching to me personally. 3 candidates qualified this round and I made it through to the final HR interview.

Round 4: The HR Interview