Devops Interview Questions

37 real Devops questions asked in live technical interviews — each with a model answer. Updated weekly.

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Got it. So you're using Git for version control and code reviews. Can you tell me more about how you test data transformations in your CI/CD pipeline? Do you write unit tests, integration tests, or both, and what frameworks do you use?🟡 Medium · Conceptual · Asked 8×I didn't catch that. Can you tell me about the testing frameworks you use for data transformations in your CI/CD pipeline?🟡 Medium · Conceptual · Asked 7×You need repeatable CI/CD for notebooks and jobs across dev to prod, with controlled job definitions and minimal drift. Which deployment approach is most robust?🟡 Medium · Conceptual · Asked 2×Describe how you would automate the deployment of an ETL pipeline built with PySpark to AWS using GitHub Actions and AWS services. Include specifics on the tools and configurations you would use to ensure seamless deployment in testing and monitoring.🔴 Hard · Conceptual · Asked 1×What would you do if a pipeline fails in the middle?🟡 Medium · Debugging · Asked 1×Tell me about a pipeline change or migration in AWS that went wrong and how you handled it.🟡 Medium · Behavioral · Asked 1×Her production pipeline fails at 2 a.m. in the morning. You are the on‑call engineer. What is the first thing you will do?🟡 Medium · Behavioral · Asked 1×Can you describe the architecture of your data pipelines? How do you develop, deploy, and productionize them, and what infrastructure do you use?🟡 Medium · System Design · Asked 1×What intermediate tool do we use for build validation in CI/CD when creating changes as a pull request?🟡 Medium · Conceptual · Asked 1×Have you implemented CI/CD in a project? Can you explain how CI/CD was implemented and what you did?🟡 Medium · Conceptual · Asked 1×Have you implemented CI/CD in a project? Can you explain how CI/CD was implemented and what you did?🟡 Medium · Conceptual · Asked 1×How does a CI/CD pipeline work? How do you create one, and what does it look like?🟡 Medium · Conceptual · Asked 1×How does a CI/CD pipeline work? How do you create one, and what does it look like?🟡 Medium · Conceptual · Asked 1×Are you familiar with Git, Jenkins, dbt, typical CI/CD pipelines, and Python, and how to deploy objects from development to production?🟡 Medium · Conceptual · Asked 1×Do you normally deploy dbt code/models from one environment to another? For example, working in a dev instance of Databricks and then moving to production. How do you manage environment variables, connections, and passwords to keep them secure and easy to manage?🟡 Medium · Conceptual · Asked 1×In a workflow automation scenario, code is picked from a repository stored in an S3 location and then execution starts. Suppose a developer has just pushed changes. Can you walk through the steps that make the code available in the target environment?🟡 Medium · Conceptual · Asked 1×In a workflow automation scenario, code is picked from a repository stored in an S3 location and then execution starts. Suppose a developer has just pushed changes. Can you walk through the steps that make the code available in the target environment?🟡 Medium · Conceptual · Asked 1×In data engineering projects, after developing pipelines, do we deploy them at the end?🟢 Easy · Conceptual · Asked 1×Have you done any CI/CD processing in your project?🟢 Easy · Behavioral · Asked 1×Have you done any CI/CD processing in your project?🟢 Easy · Behavioral · Asked 1×Let me give you a scenario: we have a critical pipeline that goes through multiple observability platforms. How do we monitor it? Is there a ticketing mechanism? How do we handle risks?🟡 Medium · Conceptual · Asked 1×What tools have you used to monitor system and pipeline health?🟢 Easy · Conceptual · Asked 1×Describe how you would deploy an AWS ecosystem.🟡 Medium · Conceptual · Asked 1×Did you handle pipeline failures?🟡 Medium · Behavioral · Asked 1×When are automated tests typically executed in a CI/CD pipeline?🟢 Easy · Conceptual · Asked 1×Do you schedule jobs in your pipeline? Which tools do you use?🟡 Medium · Conceptual · Asked 1×Will you define sequence parallel run?🟡 Medium · Conceptual · Asked 1×What tags can be used for scheduling a pipeline? Be brief.🟢 Easy · Conceptual · Asked 1×Can you explain the pipeline we were talking about?🟡 Medium · Conceptual · Asked 1×Can you explain the pipeline we were talking about?🟡 Medium · Conceptual · Asked 1×Have you built any jobs or production deployments using CACD?🟢 Easy · Behavioral · Asked 1×Your team wants repeatable library code for transformations across jobs and clusters. What packaging and deployment approach is most maintainable on Databricks?🟡 Medium · Conceptual · Asked 1×Do you have any dedicated infrastructure to provision secrets?🟡 Medium · Conceptual · Asked 1×Have you managed secrets in a secret manager? Do you have any dedicated infrastructure for that?🟡 Medium · Conceptual · Asked 1×Have you ever used a tech monitoring tool? If so, describe a real‑life scenario where you used it.🟡 Medium · Behavioral · Asked 1×How do you move code from lower environments to higher environments (dev, staging, prod) in GitHub? What practices do you follow to maintain code across environments?🟡 Medium · Conceptual · Asked 1×How do you move code from lower environments to higher environments (dev, staging, prod) in GitHub? What practices do you follow to maintain code across environments?🟡 Medium · Conceptual · Asked 1×

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