Specific Experience with Core DevOps Tools Questions
Be prepared to discuss hands-on experience with specific tools relevant to the job description: CI/CD platforms (Jenkins, GitLab CI, GitHub Actions), containerization (Docker), orchestration (Kubernetes basics), cloud platforms (AWS, Azure, GCP), and Infrastructure as Code (Terraform, CloudFormation). Prepare concrete examples of how you used these tools.
EasyTechnical
54 practiced
List the monitoring, logging, and tracing tools you've used (Prometheus, Grafana, ELK/EFK, CloudWatch, Datadog, Jaeger). For a stateless web application, specify which metrics, logs, and traces you would collect, alert on, and how you would set thresholds driven by SLOs.
HardSystem Design
28 practiced
Design a scalable and secure fleet of self-hosted CI runners on Kubernetes for GitLab or GitHub Actions. Cover autoscaling runners, launching ephemeral job pods, caching strategy for dependencies and Docker layers, node selection with taints/tolerations, runner registration and token rotation, and containment strategies for untrusted build code.
MediumSystem Design
28 practiced
Design a pipeline that promotes artifacts from dev -> staging -> prod. Include automated test gates at each stage, manual approval for production, artifact immutability and promotion strategy (no rebuilds), and how environment-specific configuration is applied without rebuilding artifacts.
HardSystem Design
38 practiced
Design a CI/CD pipeline that meets strict compliance requirements: full auditability, immutability of production artifacts, SAST/SCA/DAST scans, SBOM generation, artifact signing, and retention of audit logs. Specify tooling choices, how to capture and store audit logs, enforce policies as code, and remedial workflows when a scan fails compliance checks.
EasyTechnical
35 practiced
Describe these Kubernetes objects and how you used them in production: Pod, Deployment, ReplicaSet, Service, ConfigMap, Secret. For each object give a concise example (for instance: store DB credentials in Secret, feature flags in ConfigMap) and explain how they interact to deliver a web service.
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