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INTERVIEW QUESTIONS FOR IBM Hiring DevOps Software Developer

 


TECHNICAL INTERVIEW QUESTIONS (20)

DevOps Tools & Practices

  1. Explain the difference between continuous integration, continuous delivery, and continuous deployment.

  2. Walk me through the CI/CD pipeline you’ve built using Jenkins or GitHub Actions.

  3. How would you version and promote builds across environments (Dev → QA → Prod)?

  4. What are the key components of Jenkins architecture?

  5. Have you implemented Jenkins pipelines using scripted or declarative syntax? Which do you prefer and why?

  6. How do you secure Jenkins credentials while triggering deployments to production?

Docker & Kubernetes

  1. What is the difference between a Docker image and a container?

  2. Explain how Docker Compose works in a local DevOps environment.

  3. How do you handle persistent storage in Kubernetes?

  4. What is a Helm chart and why is it used in Kubernetes deployments?

  5. How do you roll back a deployment in Kubernetes after a failed release?

Infrastructure, Automation, Scripting

  1. What’s the difference between Ansible, Terraform, and Puppet?

  2. How do you use Ansible for configuration management in cloud VMs?

  3. Write a Bash or Python script that pings a list of servers and alerts if one is down.

  4. How would you monitor the health of a Linux server?

  5. Which logging and observability tools have you used (e.g., ELK, Prometheus, Grafana)?

Systems & Security

  1. Explain the least privilege principle in a DevOps environment.

  2. How do you ensure secrets like AWS credentials or SSH keys are secured in CI/CD?

  3. What’s the difference between symmetric and asymmetric encryption?

  4. Have you ever implemented RBAC (Role-Based Access Control) in Kubernetes or Linux systems?

BEHAVIORAL QUESTIONS (5)

  1. Tell me about a time you improved a deployment process or automated a manual workflow.

  2. Describe a project where you had to collaborate with developers and QA. What challenges did you face?

  3. How do you prioritize tasks in a fast-paced DevOps environment with multiple production issues?

  4. Have you ever failed a production deployment? What did you learn?

  5. IBM emphasizes collaboration. Describe a situation where you helped someone outside your immediate team.

SCENARIO-BASED & THINKING QUESTIONS (5)

  1. Imagine your CI pipeline has become slow and flaky. How would you debug and improve it?

  2. A service deployed on Kubernetes keeps crashing after each update. How do you troubleshoot?

  3. Your team wants to migrate from on-prem Jenkins to GitHub Actions. What steps would you plan?

  4. Your automated pipeline fails randomly once every 5 runs. What approach do you take to isolate the root cause?

  5. Management wants to implement blue-green deployments. How would you architect that in Kubernetes?

BONUS: IBM-Specific Insight

IBM often focuses on:

  • Security-by-design in DevOps

  • Developer productivity tools

  • Internal platforms & developer enablement

  • Use of Red Hat/OpenShift (since Red Hat is part of IBM)

So prepare examples that highlight:

  • Automating development workflows

  • Secure CI/CD practices

  • Collaborating with cross-functional teams on internal tools


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