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      Datadog

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      Software Engineer II Interview

      17 Mar 2025
      Anonymous employee
      Paris
      Accepted offer
      Positive experience
      Difficult interview

      Application

      I applied through a recruiter. The process took 6 weeks. I interviewed at Datadog (Paris) in Jan 2025

      Interview

      I recently went through the interview process for a Software Engineer at Datadog, and it was one of the best hiring experiences I’ve had. The entire process was well-structured, and everyone I interacted with was kind, helpful, and highly technical. 1.Initial Screening with a Sourcer The sourcer explained the hiring process, which is the same for all candidates. They provided insights into the company’s culture, values, and how to prepare for the next round. 2. First Coding Interview A live coding session with a Leetcode medium-level problem. The focus was on real-life problem-solving, algorithms, and data structures. 3. On-Site Interviews (if the first coding round is cleared) A technical recruiter took over from the sourcer at this stage. Three interviews were scheduled: Second Coding Interview: Similar to the first round. It was essential to explain the solution and its complexity clearly. System Design Interview: Conducted by two senior engineers. The discussion revolved around designing a system, covering high-level components, trade-offs, cost, monitoring, and scalability. Behavioral Interview: Led by an engineering manager. I presented past work and answered classic behavioral questions. 4.Team Matching Phase After passing the interviews, the recruiter introduced multiple engineering managers from different teams. I had the opportunity to choose the team that fit my interests and skills best. 5. Final Offer Once a team was selected, an offer was extended. The recruiter coordinator managed and scheduled all interviews efficiently, and the sourcer provided great support until the on-site stage. The engineers were highly technical, and I had some fascinating discussions with them. The process was structured, transparent, and engaging.

      Interview questions [2]

      Question 1

      Something similar to design Instagram for the system design but more focus on ML part (because of my past experience)
      1 Answer

      Question 2

      Why Datadog? Why are you leaving your current company? Conflict resolution and other behavioral questions
      Answer question

      Other Software Engineer II interview reviews for Datadog

      Software Engineer II Interview

      26 Jan 2026
      Anonymous employee
      Paris
      Accepted offer
      Positive experience
      Difficult interview

      Application

      I applied through an employee referral. I interviewed at Datadog (Paris) in Nov 2025

      Interview

      - Screening (discussion with the recruiter to ensure there is a match) - First round : coding interview - Second round : coding interview, system design, project & values (presentation of a project I worked on and where I had a major impact, followed by behavioural questions) - Team match (team managers present their teams and projects and you choose the one you prefer)

      Interview questions [1]

      Question 1

      First coding : Write a BufferedFile class Second coding : Sliding window problem System design : Design a system similar to r/places
      Answer question

      Software Engineer II Interview

      28 Jul 2025
      Anonymous employee
      Paris
      Accepted offer
      Positive experience
      Average interview

      Application

      I applied through a recruiter. I interviewed at Datadog (Paris)

      Interview

      I really appreciated the care from the recruiting team during this interview process. The recruiter made sure to check in at each step and provide feedback (which is rare to receive in this industry). I was also very impressed by the kindness of all of my interviewers and their willingness to answer all of my questions.

      Interview questions [1]

      Question 1

      Coding, system design, technical deep dive, behavioral
      Answer question

      Software Engineer II Interview

      28 May 2026
      Anonymous interview candidate
      No offer
      Positive experience
      Difficult interview

      Application

      I applied through a recruiter. I interviewed at Datadog in Jun 2025

      Interview

      Le premier entretien RH se focalise sur l'experience, les motivations, le fit avec l'offre. S'en suivent deux entretiens de coding (test d'algorithmique style leetcode). Suite à ça, un entretien de system design, dont l'objectif est de tester les capacités à concevoir l'architecture technique pour répondre à un problème vague donné en début d'entretien. Puis enfin un entretien sur l'expériences et les valeurs (discussion technique sur un projet + questions comportementales). Le process est clair, le talent acquisition manager m'a donné des conseils tout au long du process pour bien préparer les entretiens.

      Interview questions [1]

      Question 1

      Donner un exemple de situation complexe qui vous sont déjà arrivées durant votre carrière, et comment vous avez réagi / ce que vous en avez retiré ?
      Answer question

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