This loop is dominated by incidents. Expect to walk through a real outage — detection, mitigation, root cause, and what you changed so it could not recur — with the interviewer probing every step you skipped.
Also advertised as DevOps Engineer, Site Reliability Engineer — the loop is the same, and so is the practice below.
Engineering loops are the most structured of any discipline, and the most predictable. Expect a recruiter screen, one or two technical rounds, a system design conversation at mid-level and above, and a behavioural round that is usually underestimated.
The technical rounds are rarely won on the answer. They are won on narration — whether the interviewer can follow your reasoning while you work, and whether you say the trade-off out loud instead of silently picking one.
MockLive AI runs a spoken DevOps / SRE mock interview — behavioral, live coding, system design and technical deep-dive rounds — with an AI interviewer who asks questions like “Walk me through your worst incident, start to finish”, follows up on what you actually say and scores you on a fixed rubric; the first 7-minute interview is free. How it compares with other AI interview tools →
Each round is run by the interviewer built for it, with its own scoring axes — not one generic interviewer asked to change subject.
A balanced round across experience and role-specific topics.
Scored on: Technical communication · Engineering depth · Ownership & collaboration
Past experience, STAR stories, collaboration, and conflict.
Scored on: Technical communication · Engineering depth · Ownership & collaboration
Solve a coding problem in the editor, out loud.
Scored on: Problem-solving communication · Engineering correctness · Adaptability & craft
How the live coding round works →Architecture, scale, data models, and trade-offs.
Scored on: Technical communication · Engineering depth · Ownership & collaboration
Drill into your resume projects and domain fundamentals.
Scored on: Problem-solving communication · Engineering correctness · Adaptability & craft
Six you can expect, in the register interviewers actually use. Answer them out loud before you read the next section — reading a question and answering one are different skills, and only the second is marked.
The gap between these two is most of your score, and it is easier to see than to be told.
“Walk me through your worst incident, start to finish.”
The root cause and the fix, told as a technical anecdote. It answers a smaller question than the one asked.
Detection, mitigation, root cause, prevention — in that order, with the times attached and the part where you mitigated before you understood. Interviewers push hardest on the step candidates skip, which is almost always detection.
The post-mortem nobody sends you. These are specific to this loop rather than general interview advice.
For DevOps / SRE roles, a general round runs with Kai — system design, trade-offs, and war stories from production. It is the fastest way to find out which round you actually need to work on. The first session is free.
Practise a DevOps / SRE interview →Before you practise, it is worth reading how the common rounds are marked: tell me about yourself, behavioural questions and STAR, and system design.
Questions like these: “Walk me through your worst incident, start to finish.” “How did you know it was happening before a customer told you?” “What is the difference between an alert that pages and one that does not?” “How would you roll out a risky change to a service with no maintenance window?” “What does your ideal post-mortem contain?” “How do you decide an SLO, and what happens when you burn the budget?”
Expect General / Mixed (A balanced round across experience and role-specific topics), Behavioral (Past experience, STAR stories, collaboration, and conflict), Live Coding (Solve a coding problem in the editor, out loud), System Design (Architecture, scale, data models, and trade-offs) and Technical Deep-Dive (Drill into your resume projects and domain fundamentals). This loop is dominated by incidents. Expect to walk through a real outage — detection, mitigation, root cause, and what you changed so it could not recur — with the interviewer probing every step you skipped.
Conflating mitigation with fixing. Restoring service and finding the cause are different jobs and doing them in the wrong order costs users. Post-mortems with a person in the root cause line — blameless is not a nicety, it is whether your incidents produce information. Alerting philosophy that amounts to alert on everything, which is indistinguishable from alerting on nothing.
Out loud, with someone who follows up. MockLive AI's interviewer for this role asks these questions, pushes back on thin answers and scores you on a fixed rubric, with the transcript and every answer replayable. The first 7-minute interview is free and needs no card.