I applied online. The process took 2 weeks. I interviewed at Lab49 (New York, NY) in Apr 2014
Interview
Interview process was quite technical. It started out with the Lab49 recruiter herself asking a series of technical questions with 2 choices. Then came 2 phone interviews where the interviewers asked the usual multithreading concurrency framework, object oriented programming and spring questions. The 2nd phone interviewer asked me to design a class which would execute parallel tasks in a non-blocking fashion. The 3rd interview was on skype with a senior staff engineer from Lab49. This was more design oriented and the interviewer was not very patient with me and seemed to judge me from a pre-conceived bias. He barely asked me questions for 20 minutes and abruptly ended the interview although I did answer most of the questions correctly.
Interview questions [1]
Question 1
Design a non-blocking executor framework which handles multiple tasks concurrently.
I applied through a recruiter. I interviewed at Lab49 (Budapest) in Nov 2025
Interview
First Round: regular HR round talking about the company, and relevant previous experiences
Second Round: 90 minutes live coding. Allowed to read docs or ask questions, but can't use AI or google the solution.
Difficulty is a bit hard to judge, because the problems were the type where knowledge of specific patterns is required, and that determines whether it's hard or trivial.
Style of coding and a compact and "elegant" solution were emphasized over relevant skills, or thought process.
There was no followup or any feedback after the second round.
Interview questions [1]
Question 1
Make concurrent calls to a paginated API and concat the results in order. Display the results, then write various algorithms working with the above data.
I applied online. I interviewed at Lab49 (Budapest)
Interview
They said the interview process will take 4 rounds. Two technical coding interviews and two talking interviews. The first interview was about clean coding. The task was finding a bug in the code. Then refactor it how I want it.
Interview questions [1]
Question 1
Fix the bug. Then refactor the code how you want it.
I had 2 HR screenings then a hackerrank technical interview in which after solving one exercise the interviewer wanted me to solve another one and even though the interview was supposed to last 90 minutes he cut it short at 60 and that was it. I was not able to finish the second exercise. So what do they want?