DevOps Engineer interview questions & mock practice
What interview questions are asked for a DevOps Engineer?
A DevOps Engineer interview in 2026 runs across 4 rounds — linux & scripting, ci/cd & automation, cloud & containers, troubleshooting / scenario. Below are the most-asked DevOps Engineer interview questions and a focused prep plan. Rehearse every answer out loud with the free timed practice below before the real one.
- Linux
- Docker
- Kubernetes
- CI/CD
- AWS
- Terraform
- Monitoring
Free interview practice · DevOps Engineer
Practise your DevOps Engineer interview now — free
Step through the 12 most-asked DevOps Engineer questions one at a time, under a timer, just like the real thing. Jot your answer, then reveal what a strong answer covers. No signup needed to practise.
The DevOps Engineer interview process
CI/CD, cloud, containers, Kubernetes and infrastructure-as-code — the DevOps / SRE interview for cloud-native and scaling teams.
1. Linux & scripting
Shell scripting, permissions, processes and networking.
2. CI/CD & automation
Pipelines, build/release flow and IaC.
3. Cloud & containers
AWS/Azure/GCP, Docker and Kubernetes.
4. Troubleshooting / scenario
Debug a failing deployment or a production incident.
Most-asked DevOps Engineer interview questions
12 of the questions DevOps Engineer candidates are asked most often in India. Practise answering each one out loud in the timed practice above.
- 1. What is the difference between continuous integration, delivery and deployment?
- 2. Explain how Docker works and the difference between an image and a container.
- 3. What is Kubernetes and what problems does it solve?
- 4. Explain the difference between a Kubernetes Deployment, Pod and Service.
- 5. What is infrastructure as code, and why use Terraform?
- 6. How would you set up a CI/CD pipeline for a microservices app?
- 7. How do you troubleshoot a server that's running out of memory?
- 8. Explain blue-green vs canary deployments.
- 9. What is the difference between a stateful and stateless application?
- 10. How do you manage secrets and configuration in production?
- 11. Explain how DNS resolution works.
- 12. How would you debug a pod that keeps restarting (CrashLoopBackOff)?
How to prepare for your DevOps Engineer interview
Be strong on Linux fundamentals: file permissions, processes, systemd, networking and shell scripting.
Know Docker and Kubernetes hands-on — images, containers, pods, deployments, services and basic kubectl.
Understand at least one cloud (AWS most common): EC2, S3, IAM, VPC, load balancers and managed Kubernetes.
Be ready to whiteboard a CI/CD pipeline and explain rollback, blue-green and canary strategies.
Practice incident scenarios out loud: how you'd diagnose high latency, OOM kills or a failing deploy step by step.
Practise other roles
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DevOps Engineer interview — FAQs
What questions are asked in a DevOps Engineer interview?
Common DevOps Engineer interview questions include: What is the difference between continuous integration, delivery and deployment? Explain how Docker works and the difference between an image and a container. What is Kubernetes and what problems does it solve? Explain the difference between a Kubernetes Deployment, Pod and Service. Interviews usually run across 4 rounds — Linux & scripting, CI/CD & automation, Cloud & containers, Troubleshooting / scenario. Practise them with the free timed practice on this page.
How many rounds are in a DevOps Engineer interview?
A typical DevOps Engineer interview has 4 rounds: Linux & scripting (Shell scripting, permissions, processes and networking.); CI/CD & automation (Pipelines, build/release flow and IaC.); Cloud & containers (AWS/Azure/GCP, Docker and Kubernetes.); Troubleshooting / scenario (Debug a failing deployment or a production incident.).
How do I prepare for a DevOps Engineer interview?
To prepare for a DevOps Engineer interview: Be strong on Linux fundamentals: file permissions, processes, systemd, networking and shell scripting. Know Docker and Kubernetes hands-on — images, containers, pods, deployments, services and basic kubectl. Understand at least one cloud (AWS most common): EC2, S3, IAM, VPC, load balancers and managed Kubernetes. Then rehearse every question out loud with the timed practice on this page before the real thing.
What skills do I need for a DevOps Engineer role?
Core DevOps Engineer skills tested in interviews include Linux, Docker, Kubernetes, CI/CD, AWS, Terraform, Monitoring. OnJob shows you exactly which of these skills stand between you and a 100% match on every live DevOps Engineer job.
Is the DevOps Engineer mock interview practice free?
Yes. The questions, the answer guidance and the timed practice on this page are free and need no signup. With a free OnJob account you can also take timed role tests and free certification tests. Personalised AI role and skill tests are part of the paid plans.
Ace your DevOps Engineer interview
Rehearse every DevOps Engineer question out loud on this page, then sign in to take a timed role test or a free certification in the OnJob practice hub.
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