The Top 10 DevOps Engineer Interview Questions to Ask in 2025

Let's be honest, you've probably sat through more painful tech interviews than you care to admit. You ask the same textbook questions, get the same rehearsed answers, and end up hiring someone who looked great on paper but can't handle a real production fire. It’s time to stop the madness. Hope you enjoy spending your afternoons fact-checking resumes and running technical interviews—because that’s now your full-time job. Or, you could just ask the right questions.

After building and scaling more teams than I have fingers and toes, I've learned that hiring elite DevOps talent isn't about finding someone who can recite the Kubernetes documentation from memory. It’s about finding a strategic problem-solver who thinks in systems, breathes automation, and doesn't flinch when things go sideways. A candidate's ability to architect resilient pipelines is the real measure of their skill, which is why a solid grasp of core principles is non-negotiable. For a deeper dive into these foundational concepts, understanding DevOps automation is key for any engineer who wants to build systems that don't crumble under pressure.

This isn't just another generic list of devops engineer interview questions. This is a battle-tested interrogation kit designed to separate the true practitioners from the certification collectors. We'll move beyond the basics and give you the exact questions, follow-ups, and red flags to watch for. Let's dive in.

1. Explain Your Experience with CI/CD Pipeline Implementation

This is the warm-up, but it's also a deal-breaker. If a candidate can't walk you through a CI/CD pipeline they've built or significantly improved, they aren't a DevOps engineer. Full stop. It's the bread and butter of the role, automating the path from a developer's keyboard to live production. You're not just asking about tools; you're probing their understanding of the entire software delivery lifecycle.

A strong answer reveals their grasp of automation, quality gates, and deployment strategy. You want to hear the "why" behind their choices, not just the "what." Why Jenkins over GitHub Actions for that project? How did they integrate security scanning without grinding the pipeline to a halt?

Illustration showing a workflow from documents, a key, containers, and a brain to a rocket launching.

What to Listen For

A seasoned engineer will tell a story about a specific pipeline, not just list tools.

  • Specific Tooling and Integration: They should name tools like GitLab CI, Jenkins, or Azure DevOps and explain how they integrated them with source control, artifact repositories, and cloud providers.
  • Pipeline Stages: Look for a clear description of the stages: build, unit tests, integration tests, static code analysis (SAST), container scanning, and deployments to various environments.
  • Handling Failures: How do they manage a failed build? Do they describe automated rollback procedures? This separates the theorists from those who've seen a real deployment go wrong.
  • Metrics and Improvements: Top-tier candidates will talk about how they measured pipeline efficiency—metrics like lead time for changes, deployment frequency, or mean time to recovery (MTTR). This shows a mature, business-oriented approach.

2. Describe How You Handled a Critical Production Incident

Technical skills are table stakes. But how a candidate behaves when the entire production environment is on fire? That’s where you separate the engineers from the button-pushers. This is one of those behavioral devops engineer interview questions that cuts straight to the heart of the role: resilience, problem-solving under pressure, and accountability. You’re not just hiring a keyboard; you're hiring a firefighter.

A good answer here isn't about being a lone hero. It’s about demonstrating a methodical approach, clear communication, and a commitment to learning from failure. Anyone can follow a runbook. A true DevOps pro can think on their feet when the runbook is useless and the alerts are screaming.

What to Listen For

The best candidates will use a narrative framework like the STAR method (Situation, Task, Action, Result) without sounding like a robot.

  • Systematic Troubleshooting: Do they describe a logical process? Starting with monitoring dashboards, analyzing recent deployments, isolating the blast radius. A chaotic story signals a chaotic engineer.
  • Communication and Collaboration: A critical part of incident response is keeping stakeholders informed. Listen for mentions of setting up a war room, communicating with support, and collaborating with developers.
  • Post-Incident Process: The incident isn’t over when the service is back online. A top-tier candidate will discuss the importance of a blameless postmortem, documenting the root cause analysis (RCA), and creating actionable follow-up tasks.
  • Ownership and Learning: Do they take ownership of their role in the incident without blaming others? Do they clearly articulate what they learned? This shows maturity and a growth mindset.

3. How Would You Approach Migrating Legacy Applications to Kubernetes?

Ah, the migration question. This is where you separate the orchestrators from the operators. Migrating a clunky monolith into a sleek, containerized Kubernetes environment is a rite of passage. It’s messy, complex, and high-stakes. This question isn't just about kubectl apply; it's a test of architectural vision, risk management, and strategic planning.

Answering this well proves a candidate can think beyond a single tool and manage a full-scale technical transformation. A vague answer here is a massive red flag. It suggests they’ve only worked on greenfield projects and might crumble when faced with real-world technical debt.

What to Listen For

A strong candidate will immediately start asking clarifying questions. They'll treat it like a consulting engagement, not a pop quiz.

  • Phased, Strategic Approach: Look for a plan that avoids a "big bang" migration. Do they talk about a phased rollout, like the strangler fig pattern? This shows they respect production stability.
  • The "6 R's" of Migration: Even if they don't name them, their strategy should reflect these concepts: Rehost (lift-and-shift), Replatform, Refactor, etc. Their ability to choose the right "R" for the right component is key.
  • Beyond the App: A comprehensive answer must address the ecosystem. How will they handle persistent data? What's the plan for stateful applications? Do they mention networking, service discovery, and secrets management?
  • Observability and Rollback: Top-tier engineers plan for failure. They will proactively discuss setting up robust monitoring, logging, and alerting before the migration goes live. They should also have a clear rollback plan.

4. Explain Your Experience with Infrastructure as Code (IaC) Tools

If CI/CD is the engine of DevOps, then Infrastructure as Code (IaC) is the blueprint for the entire factory. This is another non-negotiable. You're not just asking if they know Terraform; you're asking if they treat infrastructure with the same discipline as application code. Manual infrastructure management is a one-way ticket to configuration drift and weekend-destroying outages.

A strong candidate will talk about IaC as a core philosophy. They understand that managing infrastructure through version-controlled, testable code is essential for creating scalable, repeatable, and disaster-proof systems.

A document with code connecting to a distributed network of server stacks and a cloud database.

What to Listen For

A true IaC practitioner has felt the pain of a corrupted state file and knows exactly how to prevent it.

  • Tooling and Rationale: They should name specific tools like Terraform, Ansible, or AWS CloudFormation and justify their choice. Why Terraform over CloudFormation for a multi-cloud setup?
  • State Management: This is a huge differentiator. Do they talk about remote state backends like S3 with locking to prevent team conflicts? This proves they’ve worked in a collaborative environment.
  • Modularity and Reusability: Great answers will include a discussion of creating reusable components. Did they build Terraform modules or Ansible roles? This shows they think about maintainability.
  • Testing and Validation: How do they ensure their code won't break production? Listen for mentions of terraform plan, static analysis with tools like tflint, or implementing policy-as-code. This signals a professional approach.

5. Walk Us Through Your Container Orchestration and Kubernetes Experience

This isn't just another buzzword check; this is where you separate the container-curious from the container-commanders. If a candidate's knowledge stops at docker run, they're going to sink. You're looking for someone who has wrestled with the beast that is Kubernetes and lived to tell the tale.

Asking about container orchestration probes their ability to manage complex, distributed systems. It's about more than just launching pods; it’s about ensuring resilience, scalability, and security for containerized apps in the real, messy world of production.

What to Listen For

A strong candidate will narrate a story of a specific cluster they managed, highlighting the problems they solved and the architectural decisions they made.

  • Practical Kubernetes Objects: Listen for specific examples beyond just Deployments. Did they implement a StatefulSet for a database? Configure an Ingress controller? Use NetworkPolicies to lock down pod-to-pod communication?
  • Scaling and Resilience: How did they handle scaling? They should talk about HorizontalPodAutoscaler (HPA) and the ClusterAutoscaler. Ask how they configured health checks (livenessProbe, readinessProbe).
  • Configuration and Secrets Management: A key operational challenge. They should describe their strategy for using ConfigMaps and Secrets. Bonus points for mentioning integration with external secret managers like HashiCorp Vault.
  • Monitoring and Logging: How did they know what was happening inside the cluster? A great answer will mention a specific monitoring stack, like Prometheus and Grafana, and a logging solution like the EFK stack.

6. Describe Your Approach to Monitoring, Logging, and Observability

If CI/CD is how you ship, observability is how you ensure what you've shipped isn't on fire. This is one of the more telling devops engineer interview questions because it separates engineers who just deploy code from those who take ownership of its performance in production. You're asking how they see into the soul of an application.

A vague answer about "checking logs" is a massive red flag. A great response details the three pillars of observability: metrics, logs, and traces. They should explain how these three work together to paint a complete picture of system health. You're looking for someone who can build a dashboard that tells a story, not just a screen full of squiggly lines.

Three icons representing Metrics, Logs, and Traces, the core pillars of observability.

What to Listen For

A skilled candidate will discuss observability as a proactive strategy, not just a reactive tool.

  • The Three Pillars in Practice: They should name specific tools and their purpose. For example, using Prometheus for metrics, the ELK Stack for logs, and Jaeger for distributed tracing.
  • Intelligent Alerting: How do they avoid alert fatigue? Listen for mentions of setting meaningful thresholds, using tools like AlertManager, and defining clear on-call runbooks. A good answer focuses on actionable alerts, not just noise.
  • Proactive Analysis: Do they talk about building dashboards in Grafana or Datadog that visualize key performance indicators? Top candidates will mention tracking SLOs/SLIs and using RED metrics (Rate, Errors, Duration).
  • Connecting the Dots: The most impressive answers will describe how they correlate these data sources—how a spike in a metric on a dashboard leads them directly to the relevant error logs and the specific trace that caused the issue.

7. How Would You Design a Disaster Recovery and High Availability Strategy?

This isn't just a technical question; it's a business question in disguise. When you ask this, you're finding out if the candidate can connect infrastructure decisions to revenue loss and customer trust. A system that can't handle a hiccup isn't just broken; it's a liability.

A candidate who dives straight into listing AWS services without asking about business needs is a red flag. The right answer starts with questions. What’s the acceptable downtime? How much data can we afford to lose? A crucial aspect of a DevOps engineer's role is to design robust business continuity and disaster recovery strategies, and their answer should reflect this strategic thinking.

What to Listen For

A great answer balances idealism with pragmatism. They should be able to design a bulletproof system but also explain the cost and complexity trade-offs.

  • Clarifying Questions: A senior engineer will immediately ask about Recovery Time Objective (RTO) and Recovery Point Objective (RPO). This shows they understand that DR isn't one-size-fits-all.
  • High Availability vs. Disaster Recovery: Do they clearly distinguish between HA (surviving failures within a single region) and DR (surviving a total region failure)? They should talk about load balancers and auto-scaling groups for HA, and multi-region deployments for DR.
  • Data and State Management: The real challenge is data. Listen for strategies like multi-region database replication, point-in-time recovery, and regular backup testing. Anyone can spin up stateless servers; handling state is where the expertise shows.
  • Automation and Testing: How would they test the plan? The best candidates will talk about chaos engineering and automated failover drills. A DR plan that hasn't been tested is just a hopeful document.

8. Explain Your Experience with Cloud Platforms (AWS/Azure/GCP) and Their Services

This is one of those devops engineer interview questions that separates the cloud-native thinkers from those who just rent virtual machines. The cloud is the modern infrastructure playground, and a DevOps engineer who isn't fluent in at least one major platform is a liability. You're asking how they've leveraged the cloud's power to build resilient, scalable, and cost-effective systems.

A great response isn't about listing every service under the sun. It's about demonstrating strategic thinking. Why did they choose a managed service like AWS RDS over running their own database on EC2? How did they use GKE to handle unpredictable traffic spikes? This question uncovers their architectural decision-making process.

What to Listen For

A strong candidate will talk about the cloud like a second home, providing specific examples of problems they solved using cloud-native services.

  • Platform-Specific Fluency: They should confidently discuss specific services in context. For AWS, that might be orchestrating containers with ECS/EKS and using RDS for databases. For Azure, it could be deploying apps via App Service and managing Kubernetes with AKS.
  • Architectural Trade-Offs: Listen for their reasoning. Can they explain when to use serverless versus containers? Did they discuss the pros and cons of managed services?
  • Cost and Security Consciousness: Top candidates will bring up cost optimization without being prompted. They’ll mention using Reserved Instances or implementing auto-scaling policies. They should also be able to discuss setting up VPCs, IAM roles, and security groups.
  • Infrastructure as Code (IaC): The crucial follow-up is how they provisioned that cloud infrastructure. Expect to hear them mention Terraform, CloudFormation, or ARM Templates.

9. Tell Us About Your Experience with Version Control Systems and Git Workflows

This is a foundational question that separates the pros from the apprentices. If a candidate can't articulate a clear branching strategy, they haven't been in the collaborative coding trenches. Version control isn't just about saving your work; it's the central nervous system for team collaboration, code quality, and a sane release process.

A great answer moves beyond simply saying "we used Git." It delves into the methodology and the trade-offs. Why did their team choose GitFlow's rigidity over GitHub Flow's simplicity? How did their chosen workflow support the CI/CD pipeline and prevent chaos in production?

What to Listen For

A skilled engineer will discuss version control as a strategic process, not just a tool.

  • Specific Workflow Knowledge: They should be able to name and explain the mechanics of a specific strategy, like GitFlow, GitHub Flow, or Trunk-Based Development.
  • Conflict Resolution and Merging: How do they handle merge conflicts? Do they prefer rebase over merge, and can they explain why? This shows their technical depth and understanding of maintaining a clean commit history.
  • Code Quality and Review: A strong candidate will immediately connect Git to their pull request (PR) and code review process. They should mention required approvals, status checks from CI builds, and conventions for commit messages.
  • Integration with Automation: How does their branching strategy trigger CI/CD pipelines? Listen for how they use git tags for semantic versioning or how merges to the main branch kick off a production deployment.

10. Describe Your Approach to Security in DevOps (DevSecOps)

This is a critical question. If a candidate's security answer is just "we run a scan before production," you've found a major gap. Security can no longer be a final gate; it must be an integrated, automated part of the entire lifecycle. Asking about DevSecOps probes their understanding of "shifting left" and treating security as everyone's problem.

A strong answer demonstrates a proactive, not reactive, mindset. You're looking for someone who thinks about security from the first line of code to the production infrastructure. They should be able to explain how they embed security into the CI/CD pipeline without creating a bottleneck.

What to Listen For

A compelling answer will go beyond simply naming security tools. It should articulate a philosophy of embedding security at every stage.

  • Shift-Left Automation: They should talk about integrating security scanning directly into the pipeline. Listen for specific tools like SAST (e.g., SonarQube), DAST, and SCA (e.g., Trivy, Snyk) for dependency and container image scanning.
  • Secrets Management: A huge red flag is a candidate who is casual about secrets. A great answer will detail using tools like HashiCorp Vault, AWS Secrets Manager, or Azure Key Vault to eliminate hardcoded credentials.
  • Infrastructure and Access Control: Look for an understanding of the principle of least privilege. They should mention implementing strong RBAC policies in Kubernetes, using IAM roles effectively in cloud environments, and applying policy-as-code tools.
  • Proactive and Reactive Measures: Beyond prevention, how do they prepare for the inevitable? Top candidates will discuss implementing logging for security events, creating incident response runbooks, and participating in post-mortem analyses.

10-Point DevOps Interview Competency Matrix

Item Implementation complexity Resource requirements Expected outcomes Ideal use cases Key advantages
Explain Your Experience with CI/CD Pipeline Implementation Medium–High (multi-stage automation, integrations) CI servers/runners, SC storage, test infra, deployment targets Automated build/test/deploy, faster release cadence, fewer manual errors Teams adopting DevOps, frequent releases, automated testing needs Increased deployment velocity, repeatability, traceability
Describe How You Handled a Critical Production Incident Variable; can be high under pressure Monitoring/alerts, access to systems, runbooks, cross-team coordination Service restoration, root-cause analysis, post‑mortem actions Evaluating incident response, on‑call readiness, crisis communication Demonstrates troubleshooting, communication, resilience
How Would You Approach Migrating Legacy Applications to Kubernetes? High (architecture, compatibility, stateful concerns) Containerization effort, testing environments, migration tooling, training Modernized deployment model, improved scalability, clearer operations Modernization projects, scaling monoliths, cloud-native adoption Enables portability, scalability, repeatable deployments
Explain Your Experience with Infrastructure as Code (IaC) Tools Medium (design of modules, state management) IaC tooling, state backend, CI integration, testing frameworks Reproducible infra, versioned changes, faster provisioning Infrastructure automation, multi-environment consistency Repeatability, reduced drift, auditable infrastructure changes
Walk Us Through Your Container Orchestration and Kubernetes Experience Medium–High (cluster ops, networking, storage) Kubernetes clusters, CNCF tools, monitoring, storage solutions Managed container workloads, autoscaling, resilient services Running containerized production workloads at scale Operational control, scalability, declarative management
Describe Your Approach to Monitoring, Logging, and Observability Medium (stack selection, alerting strategy) Metrics/log/tracing systems, dashboards, SLOs, alerting tools Improved visibility, faster troubleshooting, proactive alerts Production reliability, incident detection, performance tuning Faster MTTR, data-driven troubleshooting, customer visibility
How Would You Design a Disaster Recovery and High Availability Strategy? High (cross-region design, failover planning) Redundant infra, backup systems, replication, DR drills Defined RPO/RTO, tested failover, business continuity Critical services requiring uptime and regulatory compliance Minimizes downtime/data loss, ensures resilience and compliance
Explain Your Experience with Cloud Platforms (AWS/Azure/GCP) and Their Services Medium (service selection, architecture) Cloud accounts, managed services, cost controls, IAM Scalable, cost-optimized cloud architectures, managed services use Cloud migrations, new cloud-native applications, multi-cloud plans Access to managed services, scalability, operational efficiency
Tell Us About Your Experience with Version Control Systems and Git Workflows Low–Medium (workflow design, release integration) Git hosting, CI integration, code review tooling Consistent branching, cleaner releases, collaborative development Any software team, CI/CD integration, release management Improves collaboration, traceability, and release discipline
Describe Your Approach to Security in DevOps (DevSecOps) Medium–High (shift-left, policy integration) SAST/DAST, secret management, policy engines, training Fewer vulnerabilities in pipeline, stronger compliance posture Security-sensitive environments, regulated industries Reduces security risk, integrates security into lifecycle

So, Are You Ready to Hire, or Are You Just Interviewing?

Well, there you have it. A playbook of devops engineer interview questions designed to separate the true infrastructure architects from the script-kiddies. You now have the tools to dig deeper than a resume and probe the real-world problem-solving skills that define an elite DevOps professional. These questions are your new litmus test for technical and cultural fit.

The goal was never to just give you a list. It was to arm you with a framework for thinking like a top-tier engineering leader. A great interview process isn’t about trick questions; it’s about creating scenarios that reveal how a candidate thinks, communicates, and collaborates. It's about finding someone who doesn’t just use tools but understands the why behind them.

From Questions to a Cohesive Strategy

Remember, the best candidates are evaluating you just as much as you are evaluating them. Your ability to ask insightful, challenging questions signals that you run a high-performing team. It shows you value deep expertise over buzzword bingo.

Here’s the bottom line:

  • Go Beyond the "What": Don't just ask what they know. Ask how they've used a tool to solve a complex problem, what its limitations were, and what they would have done differently.
  • Stress-Test for Ownership: The questions about production incidents and disaster recovery are probes for accountability. You're looking for someone who takes ownership, not someone who points fingers.
  • Context is King: A brilliant answer for a startup is a disastrous one for an enterprise. Always frame your scenarios in the context of your company's actual scale and challenges.

The Hard Truth: Asking the right questions is only half the battle. The other half is the grueling, time-consuming process of sourcing, screening, and scheduling enough high-quality candidates to find "the one."

Hope you enjoy spending your afternoons fact-checking resumes and running technical interviews, because that’s now your full-time job on top of your full-time job. Or… maybe not.

The Shortcut to Elite DevOps Talent

Turns out there’s more than one way to hire elite DevOps engineers without mortgaging your office ping-pong table. The list of devops engineer interview questions in this guide is the exact kind of rigorous vetting we live and breathe.

At LatHire, we've already asked these questions (and a whole lot more) to over 800,000 pre-vetted professionals across Latin America. Our AI-powered platform and in-house experts do the heavy lifting, matching you with elite, time-zone-aligned DevOps talent in as little as 24 hours. We handle the vetting, the payroll, the compliance, all of it. You just get to interview the best of the best and make the final call.

We’re not saying we’re perfect. Just more accurate more often. (Toot, toot!)

Stop interviewing and start hiring. Your infrastructure will thank you for it.

User Check
Written by