Site Reliability Engineer Interview Prep Checklist (2026)

The general preparation checklist

These twelve steps cover the preparation every candidate needs, whatever the role.

• Research the company, its recent news, its competitors and the people you are meeting.
• Read the job description properly and match three real examples to each key requirement.
• Prepare 6–8 STAR stories covering teamwork, leadership, conflict, failure and delivery.
• Prepare 3–5 thoughtful questions to ask at the end.
• Rehearse your tell-me-about-yourself answer out loud in about two minutes.
• Read your CV line by line because anything on it is fair game.
• Check the salary range for the role and level before the money question catches you cold.
• Confirm whether the format is a panel, one-to-one, technical test or presentation.
• Test your camera, microphone, meeting link or travel route the day before.
• Lay out what you need and keep the final evening calm.
• Eat properly and sleep; late-night cramming costs more than it gives you.
• Arrive or join the video call five minutes early.

Site Reliability Engineer topics to revise

SRE interviews go deeper than DevOps on the theory: error budgets, capacity models, queueing intuition, and how you behave when a service is falling over and everyone can hear you think. Interviewers are listening for whether the framework you reach for under stress is automatic, or whether you invent it live and freeze halfway through. Below are 12 questions across behavioural, technical, situational and culture themes. Say them out loud, badly at first, until the shape of each answer is muscle memory instead of something you have only ever read.

• SLOs and error budgets: Setting objectives that mean something, budgeting for failure on purpose, and using that budget to argue about velocity without it getting personal.
• Incident response: Roles, comms, what you mitigate first, and postmortems that change something instead of producing a list of action items nobody opens again.
• Capacity and load: Modelling growth, enough queueing theory to be useful, headroom, and planning for spikes you are not paying for all year round.
• Automation and toil: Spotting toil, writing software to kill it, and resisting the urge to automate the fun thing before the painful one.
• Reliability engineering practices: Chaos testing, game days, canaries, rollbacks, and why reliability lives in the culture long before it lives in a tool.
• Team interfaces: Embedding with product teams, running production reviews, and saying no in a way that does not cost you the relationship.

Site Reliability Engineer stories and evidence

Prepare truthful examples from your own work, study or projects. Keep your personal contribution clear and say each answer out loud.

• Do one error-budget calculation by hand until you can sketch it on a whiteboard without stalling.
• Have two postmortems ready, one clean and one messy. The messy one is usually the better story.
• Warm your queueing intuition up with a couple of back-of-envelope problems on the morning.
• Bring one capacity story with a real headroom decision inside it. Interviewers latch onto those.
• Practise the incident question out loud. Calm is the signal, and it is very hard to fake on the first go.

When the checklist is done

Run through the role questions, then practise your answers aloud. A checklist gets you organised; spoken rehearsal shows where the answer still wanders.