Interview questions
DevOps Engineer interview questions
52 realistic questions across technical, behavioural, HR, situational and role-specific categories. Questions only — join free to unlock model answers, quizzes and AI mock interviews.
Showing 25 of 52 questions
Can you describe a scenario where you chose composition over inheritance in your code, and explain your reasoning?
Technical
Beginner
Q1
How would you design a REST API endpoint to handle 10,000 requests per second for a critical feature?
Technical
Intermediate
Q2
How would you identify and optimize a slow-running database query in a production environment?
Technical
Intermediate
Q3
What steps would you take to maintain fast page load times during sudden traffic spikes?
Technical
Advanced
Q4
How would you implement authentication and authorization to secure a REST API against unauthorized access?
Technical
Advanced
Q5
How do you decide which parts of your codebase to cover with unit tests versus integration tests?
Technical
Intermediate
Q6
How would you design a mechanism to prevent race conditions when multiple distributed services update the same resource?
Technical
Advanced
Q7
Can you walk me through the steps you would take to deploy a new version of a service with zero downtime?
Technical
Advanced
Q8
How would you write a shell script to automate the backup of log files on a Linux server and ensure it runs daily?
Technical
Beginner
Q41
How would you manage branching, merging, and resolving conflicts in Git during a feature development cycle?
Technical
Beginner
Q42
How would you set up a CI/CD pipeline to automatically build, test, and deploy a web application after each code commit?
Technical
Intermediate
Q43
Can you describe how you used Infrastructure as Code tools like Terraform or CloudFormation to provision and manage cloud resources for a project?
Technical
Intermediate
Q44
How would you containerize a multi-service application using Docker and orchestrate it with Kubernetes to ensure scalability and resilience?
Technical
Intermediate
Q45
How would you deploy and manage an application using AWS services such as EC2, S3, and RDS?
Technical
Intermediate
Q46
How would you implement monitoring, logging, and alerting for a production web application to quickly detect and respond to issues?
Technical
Intermediate
Q47
How have you incorporated security best practices and compliance requirements into your DevOps workflows to protect infrastructure and data?
Technical
Advanced
Q48
How would you design and implement a high availability and disaster recovery plan for a critical application?
Technical
Advanced
Q49
How would you design a scalable system architecture to handle increasing traffic for a web application using DevOps principles?
System Design
Expert
Q50
What would you do if you had to deal with Monitoring and Logging at short notice?
Role Specific
Intermediate
Q56
How would you handle Security in DevOps (DevSecOps) on a typical day?
Role Specific
Advanced
Q58
How have you used Python or Go scripts to automate complex DevOps tasks and improve deployment efficiency?
Technical
Advanced
Q60
Can you describe a situation where your understanding of networking and security fundamentals directly impacted a project’s success?
Technical
Intermediate
Q116
How would you handle Automation and Configuration Management at Scale on a typical day?
Role Specific
Advanced
Q118
How do you integrate security best practices into your DevOps workflow to ensure continuous protection?
Technical
Advanced
Q174
How would you design a scalable and high-performance system to handle millions of concurrent users?
System Design
Expert
Q176
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