Question 3Cloud, deployment and security
How would you debug a deployment that works in staging but fails at the customer's site?
Customer environments differ in ways you can't see. This tests method under pressure.
“Strong background in on-premise, private cloud, and multi-cloud environments (AWS, Azure, GCP), including experience with containerization and orchestration (Docker, Kubernetes).”Forward Deployed Engineer (AI Applications) · Seekr
The answerFour steps
- 1
Compare versions, config and environment variables
Say it like this
“First I diff what's actually running: image tags, config, environment variables. I ask for a diagnostic script's output, not a description.”
Why it scores
Compares real output. Customer staff often describe the setup they think they have.
- 2
Check network rules, proxies and certificates (common in enterprise)
Say it like this
“Next is the network, because big companies often route traffic through a proxy that inspects TLS. A curl from inside the pod shows a certificate from their internal CA, which our container doesn't trust.”
Why it scores
Goes to proxies and certificates early. Anyone who has done enterprise installs has hit this.
- 3
Look at resource limits and permissions
Say it like this
“If that hadn't been it, I'd check limits and permissions: pods killed for memory, or a service account that can't read secrets.”
Why it scores
Has the next suspects ready, with concrete examples.
- 4
Add the missing check to your install steps afterwards
Say it like this
“Afterwards the install guide gets a preflight check for outbound access and certificates.”
Why it scores
Turns one painful debug into a check every future install runs.
StrongAll together
About a minute, out loud. The marked parts are the four steps; hover one to find it above.
Say the app installs fine, but every call to the model API times out at the customer. First I diff what's actually running: image tags, config, environment variables. I ask for a diagnostic script's output, not a description.1 Everything matches. Next is the network, because big companies often route traffic through a proxy that inspects TLS. A curl from inside the pod shows a certificate from their internal CA, which our container doesn't trust.2 We add their CA bundle and the proxy settings. If that hadn't been it, I'd check limits and permissions: pods killed for memory, or a service account that can't read secrets.3 Afterwards the install guide gets a preflight check for outbound access and certificates.4
WeakThe answer that fails
Sounds fine. Common. Scores low.
“I'd ask for access to their environment, add more logging, and step through the code until I find where it fails. Then I'd patch it and redeploy.”
Interviewer's note
Assumes access and a code bug. Site-only failures are mostly config, network or permissions, and access may never come.
PracticeTwo minutes, then they push back
Your turn
How would you debug a deployment that works in staging but fails at the customer's site?
Answer like you're in the room: about two minutes, no notes. Say it out loud, even alone. It feels different from thinking it. Then check your answer against what interviewers score.