Mid leveltech

DevOps Engineer
Interview Questions

Covering DevOps Engineer interview questions — CI/CD, Docker, Kubernetes, and cloud infrastructure prep.. Free, no signup required.

10 questions ready

Technical Questions
Q1
Walk me through how you would design a CI/CD pipeline for a microservices application deployed on Kubernetes. What tools would you choose and why?
Why they ask this:* They want to assess your understanding of modern deployment practices, container orchestration, and your ability to design scalable infrastructure solutions that are core to DevOps work.
Q2
Explain the difference between stateful and stateless applications in containerized environments. How would you handle persistent data in Kubernetes?
Why they ask this:* This tests your grasp of container architecture and storage management—critical knowledge for ensuring data integrity and application reliability in production environments.
Q3
You notice your application's response time has degraded by 40% over the past hour. Walk me through your troubleshooting approach using monitoring and logging tools you've worked with.
Why they ask this:* They're evaluating your systematic debugging methodology, familiarity with observability tools (Prometheus, ELK, Datadog, etc.), and ability to quickly identify root causes in production.
Q4
How would you implement Infrastructure as Code (IaC) for managing cloud resources across multiple environments? What are the trade-offs between Terraform and CloudFormation?
Behavioral Questions
Q5
Describe a time when you had to implement a major infrastructure change (e.g., migration, upgrade, architecture shift). What was the situation, what did you do to minimize risk, and what was the outcome?
Q6
Tell me about a situation where a deployment failed in production. What happened, how did you respond, and what did you learn from it?
Q7
Can you share an example of when you had to collaborate with a development team to resolve a deployment or infrastructure issue? How did you communicate the problem and solution?
Situational Questions
Q8
How would you handle a situation where a critical production service is down, but the root cause is unclear and multiple teams are waiting for updates? What's your first priority?
Q9
What would you do if you discovered a security vulnerability in your container images that affects dozens of running services in production? Walk me through your immediate and long-term actions.
Q10
How would you handle a situation where a developer requests a new tool or framework for deployment, but it conflicts with your current standardized tech stack? How would you approach this decision?
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