EY

EY

Ernst & Young Global Limited, a multinational professional services partnership.

4 Rounds ~21 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

Cloud Engineer • Behavioral • medium

Tell me about a time you had to push back on a client's technical request because it was not best practice.

#Stakeholder Management #Communication #Leadership
Practice
Cloud Engineer • Behavioral • medium

Explain the concept of 'Infrastructure as Code' to a non-technical business stakeholder who is worried about project costs.

#Communication #Business Acumen
Practice
Cloud Engineer • Behavioral • medium

Describe a situation where a cloud migration project you were working on was falling behind schedule. How did you handle it?

#Time Management #Problem Solving #Delivery
Practice
Cloud Engineer • Behavioral • easy

Tell me about a time you proactively identified and implemented a cost-saving measure in a cloud environment.

#Cost Optimization #Initiative
Practice
Cloud Engineer • Behavioral • easy

The cloud ecosystem changes rapidly. How do you stay updated with the latest Azure/AWS features and determine which ones are relevant for your clients?

#Continuous Learning #Adaptability
Practice
Cloud Engineer • Behavioral • hard

Tell me about a time you discovered a major security flaw in a deployed architecture. What steps did you take?

#Incident Response #Integrity #Security
Practice
Cloud Engineer • Behavioral • easy

Why do you want to work as a Cloud Engineer in a consulting firm like EY rather than a traditional tech product company?

#Motivation #Consulting
Practice
Cloud Engineer • Coding • medium

Write a Python script to parse a large JSON log file, count the number of HTTP 500 errors, and output the top 3 IP addresses causing them.

#Python #Log Parsing #Data Structures
Practice
Cloud Engineer • Coding • easy

Write a Bash script that finds all files in a directory older than 30 days and archives them into a tarball.

#Bash #Linux #Automation
Practice
Cloud Engineer • Coding • medium

Write a reusable Terraform module to create an Azure Virtual Network (or AWS VPC) with public and private subnets.

#Terraform #Networking
Practice
Cloud Engineer • Coding • easy

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

#Data Structures #Stacks
Practice
Cloud Engineer • Coding • medium

Write a Python script using the boto3 (AWS) or azure-mgmt (Azure) SDK to list all virtual machines that are missing a specific 'Environment' tag.

#Python #Cloud SDK #Automation
Practice
Cloud Engineer • System Design • hard

Explain how you would design an Azure Landing Zone for a highly regulated financial client.

#Azure #Landing Zone #Security #Compliance
Practice
Cloud Engineer • System Design • hard

How do you design a Disaster Recovery strategy for a mission-critical database with an RPO of 5 minutes and an RTO of 1 hour?

#Disaster Recovery #Databases #High Availability
Practice
Cloud Engineer • System Design • hard

Design a CI/CD pipeline for a microservices-based application deploying to Kubernetes.

#CI/CD #Kubernetes #Microservices
Practice
Cloud Engineer • System Design • hard

Design a highly available, multi-region web application for a global retail client preparing for Black Friday.

#High Availability #Load Balancing #Scalability
Practice
Cloud Engineer • System Design • hard

Design an event-driven architecture to process and store millions of audit logs daily for an enterprise client.

#Event-Driven #Data Engineering #Messaging
Practice
Cloud Engineer • System Design • hard

How would you design a secure data lake architecture to handle PII (Personally Identifiable Information)?

#Data Lake #Security #Compliance
Practice
Cloud Engineer • System Design • medium

Design an API Gateway setup that includes rate limiting and WAF to protect a legacy backend system.

#API Gateway #Security #Networking
Practice
Cloud Engineer • System Design • hard

A legacy bank wants to connect their on-premise mainframe to cloud-native analytics tools. Design the connectivity and data flow.

#Hybrid Cloud #Networking #Data Integration
Practice
Cloud Engineer • System Design • hard

Design a centralized logging and monitoring system for a multi-cloud environment (Azure and AWS).

#Monitoring #Logging #Multi-Cloud
Practice
Cloud Engineer • Technical • medium

How do you manage Terraform state files securely in a multi-developer, multi-environment setup?

#Terraform #State Management #Security
Practice
Cloud Engineer • Technical • hard

A client wants to migrate their monolithic application to Azure Kubernetes Service (AKS). How would you secure the cluster?

#Kubernetes #AKS #Security #Networking
Practice
Cloud Engineer • Technical • medium

When would you recommend a client use Azure ExpressRoute versus a Site-to-Site VPN?

#Azure #Networking #Hybrid Cloud
Practice
Cloud Engineer • Technical • medium

A client's cloud spend has increased by 40% over the last quarter without a corresponding increase in traffic. How do you investigate and remediate this?

#Cost Optimization #Monitoring #FinOps
Practice
Cloud Engineer • Technical • easy

Explain the Principle of Least Privilege and how you implement it using AWS IAM or Azure RBAC.

#IAM #RBAC #Security
Practice
Cloud Engineer • Technical • medium

What is the difference between Azure Policy and Azure RBAC? Give an example of when to use each.

#Azure #Governance #Security
Practice
Cloud Engineer • Technical • medium

How do you mitigate cold starts in serverless architectures like Azure Functions or AWS Lambda?

#Serverless #Performance Optimization
Practice
Cloud Engineer • Technical • hard

A client wants to move 500 on-premise VMs to the cloud. Walk me through your decision framework for choosing between Lift & Shift (Rehosting) vs Refactoring.

#Migration #Strategy #Consulting
Practice
Cloud Engineer • Technical • medium

How do you securely inject database credentials into a CI/CD pipeline without hardcoding them?

#CI/CD #Secrets Management
Practice
Cloud Engineer • Technical • medium

Explain the difference between Blue-Green and Canary deployments. When would you use one over the other?

#Deployment Strategies #CI/CD
Practice
Cloud Engineer • Technical • medium

How do you optimize a Dockerfile for a Node.js application to ensure the image is small and secure?

#Docker #Security #Optimization
Practice
Cloud Engineer • Technical • medium

A deployment pipeline failed in production, and the client is escalating the issue. Walk me through your troubleshooting steps.

#Troubleshooting #CI/CD #Consulting
Practice
Cloud Engineer • Technical • easy

What Git branching strategy would you recommend for a distributed consulting team working on a fast-paced cloud infrastructure project?

#Git #Version Control #Team Collaboration
Practice
Cloud Engineer • Technical • medium

How do you detect and remediate infrastructure drift when someone makes a manual change in the cloud console instead of using Terraform?

#Terraform #Governance
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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