Engineering
DevOps / Platform Engineer mock interview
Builds and runs the pipelines, infrastructure and internal tools that let developers ship code to production safely and quickly. Day to day that means automating deployments, managing cloud and container infrastructure, and fixing whatever slows teams down. Hiring teams for this role tend to ask for specific examples of the work above.
Ava, the AI interviewer, will ask you questions on ci/cd pipelines, infrastructure as code, containers & kubernetes and observability & monitoring and 4 more skills, follow up on what you say, and finish with a report that quotes your own words back to you.
Skills assessed in a devops / platform engineer interview
CI/CD pipelines
Role skillDescribes concrete pipeline stages, testing gates, artifact versioning and safe rollout methods like canary or blue-green, with rollback plans.
Infrastructure as code
Role skillTalks about Terraform, OpenTofu or similar with modules, remote state, code review of plans, drift detection and environment separation.
Containers & Kubernetes
Role skillExplains images, resource limits, probes, deployments and debugging steps such as checking events, logs and exit codes.
Observability & monitoring
Role skillNames specific metrics, logs and traces they set up, ties alerts to user impact, and gives an example of catching a real problem.
Cloud infrastructure & security
Role skillCovers secrets management, least-privilege access, network boundaries and cost awareness with real services they have used.
Developer platform design
Role skillTreats developers as customers, talks about golden paths, self-service, adoption metrics and balancing standards with team freedom.
Collaboration with developers
BehaviouralGives examples of listening to developer pain, explaining changes, and adjusting tools based on feedback rather than mandating them.
Ownership
BehaviouralTakes responsibility for outcomes, follows incidents through to lasting fixes, and owns mistakes without blaming others.
Sample devops / platform engineer interview questions
8 of the 12 questions Ava can ask for this role, one or more per skill. In a real session she adapts them to your level and follows up on your answers.
- Q1CI/CD pipelinesEntry level
Walk me through what happens, step by step, between a developer pushing code and that code running in production, on a pipeline you would set up.
A strong answer: Build, automated tests, security or lint checks, packaging a versioned artifact, deploying to staging, then a controlled production rollout with a way to roll back.
- Q2Infrastructure as codeEntry level
Why would a team define its infrastructure in code instead of clicking through a cloud console, and what problems does that solve?
A strong answer: Repeatability, version history, code review, consistent environments, easier recovery and less configuration drift.
- Q3Containers & KubernetesEntry level
In plain terms, what is a container, and how is it different from running an app directly on a virtual machine?
A strong answer: Packaged app with its dependencies, shared host kernel, lighter and faster to start than a virtual machine, consistent across environments.
- Q4Observability & monitoringMid level
Tell me about a time you set up monitoring or alerting that caught a problem before users noticed. What did you measure?
A strong answer: Specific signals like error rate, latency or saturation, thresholds tied to user impact, and a concrete story of early detection.
- Q5Cloud infrastructure & securityMid level
How do you handle secrets like database passwords and API keys so they never end up in source code or build logs?
A strong answer: Uses a secrets manager or vault, injects at runtime, short-lived credentials or workload identity where possible, masking in logs, rotation and secret scanning.
- Q6Developer platform designSenior
If you were building an internal developer platform from scratch, how would you decide what to standardise and where to leave teams free to choose?
A strong answer: Starts from developer pain points, offers paved paths that are easier than alternatives, standardises security and deployment basics, and measures adoption.
- Q7Collaboration with developersAny level
Tell me about a time developers pushed back on a tool or process your team introduced. How did you handle it, and what changed?
A strong answer: Listened to concerns, separated real problems from resistance to change, adjusted the approach, and communicated the reasons clearly.
- Q8OwnershipAny level
Tell me about an outage or broken deploy you were involved in. What did you do in the moment, and what did you change afterwards?
A strong answer: Owned their part honestly, restored service first, communicated status, and drove lasting fixes rather than a one-off patch.
What a strong devops / platform engineer answer looks like
CI/CD pipelines
Describes concrete pipeline stages, testing gates, artifact versioning and safe rollout methods like canary or blue-green, with rollback plans.
Infrastructure as code
Talks about Terraform, OpenTofu or similar with modules, remote state, code review of plans, drift detection and environment separation.
Collaboration with developers
Gives examples of listening to developer pain, explaining changes, and adjusting tools based on feedback rather than mandating them.
How the practice works
- Step 1
Choose your level
Pick intern through lead. The devops / platform engineer question bank is labelled for 3 entry-level, 4 mid-level and 3 senior questions (plus 2 for any level), and Ava leans toward the ones that fit.
- Step 2
Answer out loud or by typing
Ava asks 4 or 7 main questions, depending on the length you choose, such as the cI/CD pipelines question above. You can also add a short coding exercise. Typing is always available if you can't speak.
- Step 3
Get feedback you can act on
Each skill is scored against the evidence you gave, with the specific points from your answers. In practice mode you also get a check against the situation, task, action and result structure, a stronger version of each answer built only from what you said, and what to practise next.
Frequently asked questions
- Which skills does the DevOps / Platform Engineer mock interview cover?
- CI/CD pipelines, Infrastructure as code, Containers & Kubernetes, Observability & monitoring, Cloud infrastructure & security, Developer platform design, Collaboration with developers and Ownership. The first 6 are role skills; collaboration with developers and ownership are the behavioural part.
- What kind of questions will I get?
- Questions come from a bank of 12 written for this role. An entry-level one is “Walk me through what happens, step by step, between a developer pushing code and that code running in production, on a pipeline you would set up.” and a senior one is “If you were building an internal developer platform from scratch, how would you decide what to standardise and where to leave teams free to choose?”.
- How will my containers & kubernetes answer be judged?
- Against what strong evidence looks like for that skill: explains images, resource limits, probes, deployments and debugging steps such as checking events, logs and exit codes. Anything you don't mention is not credited, and nothing is invented for you.
- Is this useful for CI/CD engineer or DevOps roles?
- Yes. CI/CD engineer, DevOps, DevOps engineer and Kubernetes engineer are treated as close to devops / platform engineer, so the same skills and questions apply. You can also type any other role on the setup screen.
- Is it free, and do I need an account?
- Starting practice is free, and a free account is required before the interview begins. The feedback is guidance for your preparation, not a prediction of any hiring decision.