Pass your next DevOps interview.
Practice real production decisions against an AI senior engineer that pushes back, then get scored against an answer key.
$39 one-time. 12 months of access. No subscription.
The decision
Checkout error rate jumped from 0.1% to 9% right after release v412. You can roll back to v411 in about 2 minutes, or push a fix forward with an unknown ETA. What do you do, and why?
Roll back now. It is a 2-minute recovery to a build that ran clean for nine days, and 9% of checkouts are failing.
Senior engineer
Your teammate says they can patch it in a minute. Why throw v412 away and do a second deploy later?
Verdict
Passed
83/100
- Correctness
- 8/10
- Reasoning
- 8/10
- Handling pushback
- 9/10
To go further: check for non-reversible migrations before rollback.
A real challenge, shortened. Read the full scenario
How it works
01
Pick a scenario
53 real production incidents and design calls across Kubernetes, Terraform, AWS, CI/CD and Linux.
02
Defend your call
A senior-engineer AI pushes back for up to 5 rounds, the way an interviewer would. It never tells you the answer.
03
Get a scored verdict
You are graded against an answer key written before you started, with what you got right and what to work on.
What you will practice
Browse all 53 challenges ->- Pods Keep OOMKilling: Scale Up or Fix the Leak?intermediate
- Terraform Wants to Replace the Database. Apply Now?advanced
- You Pushed AWS Keys to a Public Repobeginner
- The NAT Gateway Bill Exploded. Add More Gateways?intermediate
- Add a NOT NULL Column to a 50M-Row Prod Tableintermediate
- A 30-Second Blip Became a 2-Hour Outage. More Retries?advanced
One price, everything included
$39one-time
One payment. 12 months of access. No subscription, nothing renews.
- All 53 challenges, beginner to advanced
- New challenges added during your 12 months
- The private Discord
- All guides
14-day refund, no questions asked.
Built by Branko Petric, DevOps engineer. He reviews every scenario and answer key.
Questions
What is DevOps Ledger?
DevOps Ledger is a scenario-based DevOps and SRE interview practice platform: you pick a real production incident, defend your decision in a chat against a senior-engineer AI that pushes back, and get scored against an answer key written before you started.
How is this different from asking ChatGPT?
A general chatbot makes up an answer on the spot. DevOps Ledger grades you against an answer key written before you started. The AI can only credit points that are in that key, and the score is recomputed on our server.
Who writes the answer keys?
Every scenario has an answer key written before your session and reviewed by Branko Petric, a working DevOps engineer. The takeaway you see is copied word for word from that key, never generated during your session.
What do I get for $39?
12 months of full access to every challenge and the private Discord. No subscription, nothing renews. 14-day refund, no questions asked: email branko@devopsledger.com.
Why is there no free trial?
Every round runs a real model twice: once to argue with you and once to grade you. Instead, every scenario is public to read, and a full sample verdict is shown above.
Will it help me pass?
It trains the part most candidates struggle with: making a production call and holding it under pushback. Nothing can guarantee an offer, but you walk in having defended real decisions out loud.
More questions? Read the FAQ or email branko@devopsledger.com.
Your next interview will ask you to make a call. Practice making it.
Not ready yet? Start with the free DevOps guides