Question 1

Walk me through a CI/CD pipeline you’ve built.

Accepted Answer

Hands-on delivery experience. Stages, tests and quality gates, artefacts, deployment strategy (blue/green, canary), rollbacks, and how long it takes.

Question 2

How do you manage infrastructure changes safely?

Accepted Answer

Infrastructure as code maturity. Terraform or similar, code review, plan before apply, separate environments, state management, and drift detection.

Question 3

What do you monitor, and how do you avoid alert fatigue?

Accepted Answer

Observability judgment. Alert on user-facing symptoms (SLOs) rather than every cause; dashboards for diagnosis; every alert must be actionable.

Question 4

Tell me about an outage you handled.

Accepted Answer

Incident response. Detection, communication, mitigation first, root cause later, blameless postmortem and the follow-up actions.

Question 5

How would you reduce our cloud bill?

Accepted Answer

Cost awareness. Measure by service, right-size, autoscale, reserved/spot capacity, delete idle resources, and set budgets and alerts.

Question 6

How do you handle secrets?

Accepted Answer

Security basics. A secrets manager, never in code or images, least-privilege access, rotation, and audit logs.

Question 7

Tell me about yourself.

Accepted Answer

It sets the frame for the whole interview and tests whether you can summarise your career around what they need. 90 seconds: present (current role and one proud result), past (the path that got you here), future (why this role is the logical next step). Skip your life story.

Question 8

Tell me about a time you disagreed with a teammate or manager.

Accepted Answer

They want to see that you can push back with evidence and still commit once a decision is made. Use STAR. Show how you understood their view, what data you brought, how it was resolved — and what you did if you lost the argument.

Question 9

Describe a project that failed or didn’t go to plan.

Accepted Answer

Ownership and learning matter more than a perfect track record. Pick a real failure you contributed to. Spend most of the answer on what you changed afterwards — ideally with a later result that proves it.

Question 10

Tell me about a time you had to deliver under a tight deadline.

Accepted Answer

They’re testing prioritisation and communication, not heroics. Explain what you cut or re-scoped, who you told and when, and the outcome. Mention the trade-off you consciously accepted.

Question 11

What’s an accomplishment you’re most proud of?

Accepted Answer

It shows what you value and the scale you operate at. Choose one relevant to this role. Make your personal contribution clear (“I”, not “we”) and end with a number.

Question 12

Why do you want to work here?

Accepted Answer

They want evidence you chose them — not just any job. Connect something specific (their product, a recent launch, how the team works) to your experience and what you want to do next.

DevOps / Platform Engineer interview questions

Role-specific questions

1.Walk me through a CI/CD pipeline you’ve built.

2.How do you manage infrastructure changes safely?

3.What do you monitor, and how do you avoid alert fatigue?

4.Tell me about an outage you handled.

5.How would you reduce our cloud bill?

6.How do you handle secrets?

Behavioral questions

7.Tell me about yourself.

8.Tell me about a time you disagreed with a teammate or manager.

9.Describe a project that failed or didn’t go to plan.

10.Tell me about a time you had to deliver under a tight deadline.

11.What’s an accomplishment you’re most proud of?

12.Why do you want to work here?