IBM

Global technology and consulting firm with deep roots in enterprise IT and AI.

3 Rounds ~14 Days Medium

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The Interview Loop

Recruiter Screen (30 min)

Standard fit check, behavioral questions, and resume overview.

Technical Loop (3-4 Rounds)

Deep dive into domain knowledge, coding, and system design.

Interview Question Bank

All Roles Backend Engineer 35 Cloud Engineer 35 Data Engineer 35 Data Scientist 35 DevOps Engineer 35 Frontend Engineer 35 Full Stack Engineer 35 Machine Learning Engineer 35 Product Manager 35 Software Engineer 35

All Topics System Design 7 Algorithms 6 Culture Fit 2 Container Orchestration 2 Cloud Computing 2 Containers 2 Incident Management 1 Communication 1

Cloud Engineer • Behavioral • easy

Tell me about a time you had to learn a new technology or framework very quickly to deliver a project.

#Adaptability #Continuous Learning

Practice

Cloud Engineer • Behavioral • medium

Describe a situation where you had a technical disagreement with a senior engineer or architect. How did you resolve it?

#Communication #Teamwork

Practice

Cloud Engineer • Behavioral • medium

Walk me through a time you handled a critical production outage. What was your role and what did you learn?

#Troubleshooting #Under Pressure #Post-mortem

Practice

Cloud Engineer • Behavioral • medium

Tell me about a time you identified an inefficient process and took the initiative to improve it.

#Initiative #Process Improvement #Automation

Practice

Cloud Engineer • Behavioral • medium

Describe a time you failed to meet a deadline or deliverable. How did you handle it?

#Failure #Time Management #Integrity

Practice

Cloud Engineer • Behavioral • easy

Why do you want to work as a Cloud Engineer at IBM specifically, compared to other tech companies?

#Motivation #Company Knowledge

Practice

Cloud Engineer • Behavioral • medium

Tell me about a time you worked with a difficult or demanding client/stakeholder. How did you ensure their success?

#Client Relations #Empathy #Communication

Practice

Cloud Engineer • Behavioral • medium

Explain a highly complex technical concept (like Kubernetes networking or Terraform state) to me as if I were a non-technical project manager.

#Communication #Mentoring #Clarity

Practice

Cloud Engineer • Coding • medium

Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element.

#Heaps #Quickselect

Practice

Cloud Engineer • Coding • easy

Given an array of integers and an integer target, return indices of the two numbers such that they add up to target. Assume exactly one solution exists.

#Arrays #Hash Table

Practice

Cloud Engineer • Coding • easy

Write a function to determine if a string containing just the characters '(', ')', '{', '}', '[' and ']' is valid.

#Strings #Stacks

Practice

Cloud Engineer • Coding • medium

Given an array of intervals where intervals[i] = [start_i, end_i], merge all overlapping intervals and return an array of the non-overlapping intervals.

#Arrays #Sorting

Practice

Cloud Engineer • Coding • medium

Design and implement a data structure for a Least Recently Used (LRU) cache.

#Hash Table #Doubly Linked List #Design

Practice

Cloud Engineer • Coding • medium

Given an m x n 2D binary grid which represents a map of '1's (land) and '0's (water), return the number of islands.

#Graph #DFS #BFS

Practice

Cloud Engineer • Coding • medium

Given an array of characters, compress it in-place. The length after compression must always be smaller than or equal to the original array.

#Two Pointers #Strings

Practice

Cloud Engineer • System Design • medium

Design a highly available, multi-region web application on IBM Cloud.

#High Availability #Load Balancing #Cloud Architecture

Practice

Cloud Engineer • System Design • hard

Design a hybrid cloud disaster recovery solution for an on-premises enterprise database.

#Disaster Recovery #Hybrid Cloud #Databases

Practice

Cloud Engineer • System Design • hard

Design a scalable log aggregation and search system for a microservices architecture generating 10TB of logs per day.

#Logging #Big Data #Microservices

Practice

Cloud Engineer • System Design • medium

How would you design communication between microservices? When would you choose synchronous REST/gRPC vs asynchronous message queues?

#Microservices #Architecture #Messaging

Practice

Cloud Engineer • System Design • hard

Design a distributed rate limiter for an API Gateway.

#Distributed Systems #API Gateway #Algorithms

Practice

Cloud Engineer • System Design • medium

A client wants to migrate a monolithic legacy application to a cloud-native architecture. Walk me through your strategy.

#Cloud Migration #Microservices #Strangler Fig

Practice

Cloud Engineer • System Design • hard

Design a secure architecture for an application that processes highly sensitive financial data (PCI-DSS compliant).

#Security #Compliance #Architecture

Practice

Cloud Engineer • Technical • medium

Explain the architectural differences between Red Hat OpenShift and upstream Kubernetes. Why would an enterprise client choose OpenShift?

#Kubernetes #OpenShift #Red Hat

Practice

Cloud Engineer • Technical • medium

How do you manage Terraform state files in a collaborative team environment, specifically addressing state locking and secrets?

#Terraform #DevOps #Security

Practice

Cloud Engineer • Technical • medium

What is idempotency in the context of Ansible, and how do you ensure your playbooks are idempotent?

#Ansible #Automation

Practice

Cloud Engineer • Technical • easy

Describe the difference between IBM Cloud VPC (Virtual Private Cloud) and Classic Infrastructure.

#IBM Cloud #Networking #VPC

Practice

Cloud Engineer • Technical • medium

How does Role-Based Access Control (RBAC) work in Kubernetes, and how does it integrate with Cloud IAM?

#Kubernetes #IAM #RBAC

Practice

Cloud Engineer • Technical • medium

What are the main differences between Docker and Podman? Why is Podman heavily favored in the Red Hat ecosystem?

#Docker #Podman #Linux

Practice

Cloud Engineer • Technical • medium

In Kubernetes, when would you use a StatefulSet instead of a Deployment?

#Kubernetes #Architecture

Practice

Cloud Engineer • Technical • hard

You log into a Linux server and notice the load average is extremely high, but CPU utilization is low. What could be causing this and how do you troubleshoot it?

#Linux #Troubleshooting #I/O

Practice

Cloud Engineer • Technical • medium

Explain the concept of GitOps. How does a tool like ArgoCD or Tekton fit into a modern cloud-native CI/CD pipeline?

#GitOps #CI/CD #Kubernetes

Practice

Cloud Engineer • Technical • medium

How do you optimize a Dockerfile to reduce the final image size and improve security?

#Docker #Security #Optimization

Practice

Cloud Engineer • Technical • easy

What is the difference between a Network ACL and a Security Group in a VPC environment?

#VPC #Security #Networking

Practice

Cloud Engineer • Technical • medium

Explain how Prometheus scrapes metrics and how it differs from a push-based monitoring system.

#Prometheus #Monitoring #Metrics

Practice

Cloud Engineer • Technical • medium

Describe the lifecycle of a Kubernetes Pod from creation to termination.

#Kubernetes #Architecture

Practice

Difficulty Radar

Based on recent AI-sourced data.

Meet Your Interviewers

The "Standard" Interviewer

Senior Engineer

Focuses on core competencies, system constraints, and clear communication.

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Unwritten Rules

Think Out Loud

Always explain your thought process before writing code or drawing architecture.

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