Datadog

Software Engineer Interview Experience - Lisbon, Portugal

May 2, 2025

Positive ExperienceNo Offer

Process

The process had three stages:

A HackerRank assessment with two LeetCode questions (easy)
An HR interview
A technical interview (LeetCode medium)
More coding and behavioral questions

During the process, I was in contact with an HR representative and a coordinator. They were very nice and provided a good experience throughout.

Unfortunately, I didn't pass the technical interview. However, the overall process was professional and well-organized.

Questions

Why Datadog?

Two LeetCode questions: easy/medium.

Interview Statistics

The following metrics were computed from 5 interview experiences for the Datadog Software Engineer role in Lisbon, Portugal.

Success Rate

20%

Pass Rate

Datadog's interview process for their Software Engineer roles in Lisbon, Portugal is very selective, failing most engineers who go through it.

Experience Rating

Positive60%

Neutral40%

Negative0%

Candidates reported having very good feelings for Datadog's Software Engineer interview process in Lisbon, Portugal.

Datadog Interview Questions

Coin Change

Medium

Given a set of coin denominations and a target amount, find the minimum number of coins needed to reach that amount. You can assume you have an unlimited supply of each coin type.

ArraysDynamic Programming

Most Common Word

Easy

Find the most frequent word in a given paragraph, excluding a list of banned words. Return the most common word after performing case-insensitive comparison and removing punctuation.

ArraysStrings

Maximum Depth of N-ary Tree

Easy

Find the maximum depth (number of nodes along the longest path from the root) of an N-ary tree. Each node can have multiple children.

TreesRecursion