Open Source Java Developer Interview Experience - Paris, France
Process
By far my worst interviewing experience.
I applied online and had a quick 15-minute call with HR. Then, I had a first coding round of one hour, with two easy/medium LeetCode questions. After that, I had to do a homework assignment. I spent a long time on it to deliver something that was (in my opinion) good, at least correct as it met all the requirements. I submitted my project and simply received an email telling me that I didn't make it to the next round.
No feedback was provided in the email. I asked for some and didn't get any response.
Clearly my worst interviewing experience. I don't mind being refused; I just think that they could have a bit of consideration for candidates spending time to apply and not simply send an automated email to reject them.
Questions
Implement an algorithm to make change, returning the lowest number of coins possible. No DP involved, thanks to the available coins.
Implement a DFS to calculate the maximum path (by summing node's data).
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Interview Statistics
The following metrics were computed from 1 interview experience for the Datadog Open Source Java Developer role in Paris, France.
Success Rate
Datadog's interview process for their Open Source Java Developer roles in Paris, France is extremely selective, failing the vast majority of engineers.
Experience Rating
Candidates reported having very negative feelings for Datadog's Open Source Java Developer interview process in Paris, France.
Datadog Work Experiences
- 5.0Great company to work atSenior Software Engineer • Current EmployeeParis, FranceApril 2, 2021Pros: Interesting challenges, great care packageCons: The usual pains of high growth rate.
- 5.0A great place to workSoftware Engineer • Current EmployeeParis, FranceFebruary 4, 2025Pros: - Life/work balance valued and respected. - Challenging topics to work on. - Kind people eager to share their knowledge. - A long list of employee benefits. - The Paris office is well located and very comfortable.Cons: 3 days per week at the office required (although the people and the office are a good motivation to go).
- 5.0Good Engineering CultureSoftware Engineer • Current EmployeeParis, Île-de-France, FranceOctober 12, 2025Pros: - Interesting engineering problems to solve. - Good office with food.Cons: A lot of coordination between teams is needed to get things done, which decelerates things sometimes.
Datadog Interview Questions
