Q1
Walk me through how you would design a self-service CI/CD platform for a development team of 50+ engineers. What tools would you choose, and how would you handle multi-cloud deployments?
Why they ask this:* Tests your ability to architect scalable platform solutions, understand CI/CD tooling (Jenkins, GitLab CI, GitHub Actions), and make technology choices that balance complexity with usability for a large user base.
Q2
Explain how you would implement infrastructure-as-code (IaC) across multiple cloud providers (AWS, GCP, Azure). What are the trade-offs between Terraform, CloudFormation, and cloud-native solutions?
Why they ask this:* Assesses practical knowledge of IaC tools, multi-cloud strategy, and your ability to manage infrastructure consistently while understanding vendor-specific limitations and benefits.
Q3
Describe your approach to setting up observability (metrics, logs, traces) for a microservices platform. Which tools would you use and how would you ensure teams can self-serve troubleshooting?
Why they ask this:* Evaluates understanding of observability best practices, familiarity with tools like Prometheus, ELK, Datadog, or New Relic, and ability to enable developer independence through platform features.
Q4
How would you implement a Kubernetes networking policy strategy to isolate workloads across multiple namespaces while maintaining service-to-service communication?