Cloud Engineer Interview Questions UK: 8 Real Questions and What Interviewers Want

Most Cloud Engineer interviews in the UK follow a pattern, and knowing it beats guessing. Below are eight questions from our bank of 25, each with a note on what the interviewer is really after.

Eight Cloud Engineer interview questions, and what the interviewer is thinking

1. Can you explain the shared responsibility model in the cloud and why it matters?

Why they ask: It checks that you understand where the provider's security duties end and yours begin.

2. How do you design a secure and well-structured network in AWS or Azure?

Why they ask: Network design is the foundation of every cloud environment.

3. How do you manage identity and access in the cloud, and what does least privilege look like in practice?

Why they ask: Poor IAM is the most common cause of cloud security incidents.

4. What is infrastructure as code, and how have you used Terraform, Bicep or CloudFormation?

Why they ask: IaC is now a baseline expectation for cloud engineers.

5. How would you design a highly available and resilient architecture for a web application in the cloud?

Why they ask: They want to see you apply cloud design principles to meet availability targets.

6. Your cloud bill has doubled this month with no planned change. How would you investigate?

Why they ask: Cost surprises are common, and they want a methodical approach.

7. Tell me about a time you migrated a workload or application to the cloud.

Why they ask: They want proof of hands-on migration experience and delivery.

8. What does a typical day as a cloud engineer involve?

Why they ask: They want to check you understand the real work beyond the buzzwords.

A sample answer to question 1

Can you explain the shared responsibility model in the cloud and why it matters?

The shared responsibility model says the cloud provider secures the cloud itself, meaning the physical data centres, hardware, hypervisor and core network, while the customer is responsible for what they put in it. How much that covers depends on the service model. With IaaS such as EC2 or Azure virtual machines, I'm responsible for the guest operating system, patching, firewall rules, identity and access, and data. With PaaS like Azure App Service or RDS, the provider handles the OS and much of the platform patching, but I still own configuration, access, network exposure and the data. With SaaS, I mostly manage users, permissions and data governance. It matters because most cloud breaches come from customer misconfiguration, such as public storage buckets, over-permissive IAM roles or unpatched virtual machines, rather than provider failures. In practice I'd use tools like AWS Config, Microsoft Defender for Cloud and Azure Policy to continuously check that our side of the model is being met.

Common mistake to avoid: Saying the provider handles all security; Ignoring that responsibility changes by service type

Want the rest?

Full model answers, key points and common mistakes for all 25 questions are on the Cloud Engineer interview questions page. The first five are free, no sign-up needed.