IBM
Global technology and consulting firm with deep roots in enterprise IT and AI.
3 Rounds
~14 Days
Medium
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
Backend Engineer
•
System Design
•
hard
How would you design a rate limiter for a public API?
#API Gateway
#Algorithms
#Redis
Backend Engineer
•
System Design
•
medium
Design a URL Shortener service like Bitly.
#Scalability
#Hashing
#Databases
Backend Engineer
•
System Design
•
hard
Design a highly available distributed cache.
#Caching
#Distributed Systems
#Consistent Hashing
Backend Engineer
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System Design
•
hard
Design a centralized log aggregation system for a large-scale microservices architecture.
#Logging
#Microservices
#Message Queues
Backend Engineer
•
System Design
•
medium
Design a scalable notification system that sends Emails, SMS, and Push Notifications.
#Asynchronous Processing
#Message Queues
#Microservices
Backend Engineer
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System Design
•
hard
Design an e-commerce checkout API process that ensures a customer is never double-charged, even if network timeouts occur.
#Idempotency
#Transactions
#Microservices
Cloud Engineer
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System Design
•
hard
Design a distributed rate limiter for an API Gateway.
#Distributed Systems
#API Gateway
#Algorithms
Cloud Engineer
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System Design
•
hard
Design a secure architecture for an application that processes highly sensitive financial data (PCI-DSS compliant).
#Security
#Compliance
#Architecture
Cloud Engineer
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System Design
•
medium
Design a highly available, multi-region web application on IBM Cloud.
#High Availability
#Load Balancing
#Cloud Architecture
Cloud Engineer
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System Design
•
hard
Design a hybrid cloud disaster recovery solution for an on-premises enterprise database.
#Disaster Recovery
#Hybrid Cloud
#Databases
Cloud Engineer
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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
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
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
Data Engineer
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System Design
•
hard
Design a batch pipeline to ingest 10TB of daily log data into a data lake on IBM Cloud.
#Batch Processing
#Data Lake
#IBM Cloud Object Storage
#Spark
Data Engineer
•
System Design
•
hard
Design a real-time streaming pipeline for credit card transaction fraud detection.
#Streaming
#Kafka
#Spark Streaming / Flink
#Low Latency
Data Engineer
•
System Design
•
hard
How would you migrate an on-premise DB2 database to a cloud data warehouse with minimal downtime?
#Cloud Migration
#CDC
#DB2
Data Engineer
•
System Design
•
medium
Design an idempotent data pipeline. Why is idempotency important?
#Idempotency
#Data Pipelines
#Fault Tolerance
Data Engineer
•
System Design
•
medium
Design a data model for a retail e-commerce platform.
#Data Modeling
#Fact Tables
#Dimension Tables
Data Engineer
•
System Design
•
hard
Design a metric aggregation system that handles late-arriving events in a streaming architecture.
#Streaming
#Watermarking
#Event Time vs Processing Time
Data Scientist
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System Design
•
medium
Design a scalable data pipeline to ingest, clean, and process daily logs from millions of IBM web servers for anomaly detection.
#Data Engineering
#Pipelines
#Big Data
DevOps Engineer
•
System Design
•
hard
Design a Disaster Recovery (DR) strategy for a stateful application running on Kubernetes. How do you ensure RPO and RTO requirements are met?
#Disaster Recovery
#Kubernetes
#Storage
#Architecture
DevOps Engineer
•
System Design
•
hard
Design a centralized logging architecture for a hybrid cloud environment (on-prem and IBM Cloud). What tools would you use and how would you handle log rotation and retention?
#Logging
#Hybrid Cloud
#Architecture
#ELK
DevOps Engineer
•
System Design
•
hard
How would you design a deployment pipeline for edge computing devices (e.g., IBM Edge Application Manager) where network connectivity is intermittent?
#Edge Computing
#Architecture
#Resilience
DevOps Engineer
•
System Design
•
hard
Design a highly available microservices architecture on IBM Cloud. How do you handle load balancing, database replication, and failover?
#IBM Cloud
#High Availability
#Microservices
#Databases
Frontend Engineer
•
System Design
•
hard
Design a frontend dashboard for monitoring IBM Cloud resources in real-time.
#Frontend System Design
#WebSockets
#Data Visualization
Frontend Engineer
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System Design
•
hard
Design a scalable data grid component for an IBM Cloud billing dashboard that can handle 100,000+ rows of data.
#Frontend System Design
#Performance
#Virtualization
Frontend Engineer
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System Design
•
medium
Design an autocomplete/typeahead search component for IBM Watson documentation.
#Frontend System Design
#API Design
#UX
Frontend Engineer
•
System Design
•
medium
Design a file upload widget with progress tracking, chunking, and resume capabilities.
#Frontend System Design
#Network
#File API
Frontend Engineer
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System Design
•
medium
How would you architect a frontend application to support dynamic theming using CSS variables, similar to the IBM Carbon Design System?
#CSS
#Architecture
#Design Systems
Full Stack Engineer
•
System Design
•
medium
Design a rate limiter for a public-facing API to prevent abuse.
#Algorithms
#Redis
#API Design
Full Stack Engineer
•
System Design
•
medium
Design a URL Shortener service (like bit.ly). Focus on the API design and database schema.
#Scalability
#API Design
#Databases
Full Stack Engineer
•
System Design
•
hard
How would you design a distributed cache system?
#Caching
#Distributed Systems
#Consistent Hashing
Full Stack Engineer
•
System Design
•
hard
Design an enterprise chat application similar to Slack or Microsoft Teams.
#WebSockets
#Microservices
#Databases
#Real-time
Full Stack Engineer
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System Design
•
hard
Design a highly available log aggregation service for IBM Cloud that ingests logs from thousands of microservices.
#Distributed Systems
#Kafka
#Elasticsearch
#Scalability
Machine Learning Engineer
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System Design
•
hard
Design a scalable enterprise document classification system that uses LLMs to categorize incoming support tickets.
#NLP
#LLMs
#Enterprise Architecture
Machine Learning Engineer
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System Design
•
hard
Design a scalable recommendation system for IBM Cloud documentation to help developers find relevant tutorials.
#Recommendation Systems
#Scalability
#Architecture
Machine Learning Engineer
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System Design
•
hard
Design a real-time fraud detection system for processing millions of financial transactions per second.
#Real-time Processing
#Streaming
#Fraud Detection
Product Manager
•
System Design
•
hard
Design a system to monitor and alert on anomalies in IBM Cloud infrastructure.
#Monitoring
#Infrastructure
#Anomaly Detection
Product Manager
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System Design
•
medium
Design a high-level architecture for a B2B dashboard that tracks API usage and billing across hybrid cloud environments.
#Dashboards
#API Management
#Architecture
Product Manager
•
System Design
•
hard
Design a data pipeline architecture for ingesting real-time IoT data into an IBM Maximo asset management system.
#IoT
#Data Pipelines
#IBM Maximo
Software Engineer
•
System Design
•
hard
Design a highly available hybrid cloud storage service that synchronizes on-premise enterprise data with IBM Cloud Object Storage.
#Hybrid Cloud
#Data Synchronization
#High Availability
#Storage
Software Engineer
•
System Design
•
easy
Design a URL shortener service like Bitly.
#Hashing
#Database
#Caching
#Load Balancing
Software Engineer
•
System Design
•
hard
Design a distributed message queue system similar to Apache Kafka or IBM MQ.
#Distributed Systems
#Message Queue
#Storage
#Concurrency
Software Engineer
•
System Design
•
medium
Design a real-time AI inference pipeline that takes user text, processes it via Watson NLP models, and returns sentiment analysis to a web client.
#AI/ML Pipelines
#WebSockets
#Microservices
#Load Balancing
Software Engineer
•
System Design
•
hard
Design a scalable log aggregation system (similar to Splunk or the ELK stack) that can ingest, index, and query terabytes of logs daily from thousands of IBM microservices.
#Log Aggregation
#Kafka
#Elasticsearch
#Big Data
Software Engineer
•
System Design
•
medium
Design a distributed rate limiter for an enterprise API gateway to prevent abuse and enforce client-specific quotas.
#Rate Limiting
#API Gateway
#Redis
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
SimulateUnwritten Rules
Think Out Loud
Always explain your thought process before writing code or drawing architecture.