Professional networking platform with rich data and ML-driven recommendations.
4 Rounds
~21 Days
Hard
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
DevOps Engineer
•
Behavioral
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medium
Tell me about a time you took an 'intelligent risk' (a LinkedIn core value) in a production environment. What was the outcome?
#Risk Management
#Decision Making
#LinkedIn Values
DevOps Engineer
•
Behavioral
•
medium
Tell me about a time you 'acted like an owner' (a LinkedIn core value) to resolve a critical infrastructure issue that was technically outside your direct responsibility.
#Ownership
#Cross-functional Collaboration
#Initiative
DevOps Engineer
•
Behavioral
•
hard
Tell me about a production outage you were involved in. What was the root cause, how did you fix it, and what was the post-mortem action item?
#Troubleshooting
#Post-mortem
#Continuous Improvement
DevOps Engineer
•
Behavioral
•
medium
Tell me about a time you had a disagreement with a software engineer regarding a deployment or architectural decision. How did you resolve it?
#Conflict Resolution
#Communication
#Collaboration
DevOps Engineer
•
Behavioral
•
easy
Tell me about a time you automated a repetitive task to improve your team's efficiency. How did you measure the impact?
#Automation
#Efficiency
#Impact
DevOps Engineer
•
Coding
•
medium
Write a Python script to parse a 50GB Nginx access log file and output the top 10 IP addresses by request count. You have limited memory.
#Python
#File I/O
#Data Structures
#Memory Management
DevOps Engineer
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Coding
•
medium
Implement an LRU (Least Recently Used) Cache with O(1) time complexity for get and put operations.
#Data Structures
#Hash Map
#Doubly Linked List
DevOps Engineer
•
Coding
•
medium
Given an array of intervals where intervals[i] = [starti, endi], merge all overlapping intervals, and return an array of the non-overlapping intervals.
#Arrays
#Sorting
DevOps Engineer
•
Coding
•
medium
Write a Bash script to find and delete all .log files older than 30 days in /var/log/app, but keep the 5 most recent files regardless of age.
#Bash
#Linux
#Automation
DevOps Engineer
•
Coding
•
easy
Write a Python function to check if a string containing only parentheses '()', '{}', and '[]' is valid. The brackets must close in the correct order.
#Stacks
#Strings
DevOps Engineer
•
Coding
•
medium
Write a Python script to hit a health check endpoint every 5 seconds. If it fails 3 times consecutively, send a JSON payload to a Slack webhook.
#Python
#HTTP Requests
#Error Handling
#Automation
DevOps Engineer
•
System Design
•
medium
Design a CI/CD pipeline for a new LinkedIn microservice. How would you handle automated testing, security scanning, and deployment to a Kubernetes cluster?
#Jenkins
#Kubernetes
#Automation
#Security
DevOps Engineer
•
System Design
•
hard
How would you design a highly available Kafka cluster across multiple data centers to support LinkedIn's real-time activity data?
#Kafka
#Distributed Systems
#High Availability
#Replication
DevOps Engineer
•
System Design
•
hard
Design a monitoring and alerting system for LinkedIn's messaging service. What metrics would you track and how would you prevent alert fatigue?
#Prometheus
#Grafana
#SLIs/SLOs
#Alerting
DevOps Engineer
•
System Design
•
hard
Design a distributed rate limiter for LinkedIn's public API to prevent abuse. How do you handle synchronization across multiple nodes?
#Rate Limiting
#Redis
#Distributed Systems
#Algorithms
DevOps Engineer
•
System Design
•
hard
Design a highly available and scalable image storage service for LinkedIn profile pictures. How do you handle caching and global distribution?
#Object Storage
#CDN
#Scalability
#Database Design
DevOps Engineer
•
System Design
•
medium
Describe how you would implement auto-scaling for a stateless web application. What metrics would trigger the scaling?
#Auto-scaling
#Load Balancing
#Metrics
DevOps Engineer
•
System Design
•
hard
Design a log aggregation system capable of handling petabytes of data per day from thousands of microservices.
#Logging
#Elasticsearch
#Kafka
#Data Pipelines
DevOps Engineer
•
Technical
•
medium
You receive an alert that a critical Linux server's CPU usage is at 100%. Walk me through your exact troubleshooting steps.
#Troubleshooting
#Performance Tuning
#CLI Tools
DevOps Engineer
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Technical
•
medium
What happens exactly at the network and OS level when you type www.linkedin.com into your browser and press Enter?
#DNS
#TCP/IP
#TLS
#HTTP
DevOps Engineer
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Technical
•
medium
Explain the TCP 3-way handshake and describe what happens when a connection enters the TIME_WAIT state. Why is TIME_WAIT necessary?
#TCP/IP
#Sockets
#Network Protocols
DevOps Engineer
•
Technical
•
medium
How do you manage Terraform state in a multi-developer environment? What happens if two engineers apply changes simultaneously?
#Terraform
#State Management
#Concurrency
DevOps Engineer
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Technical
•
medium
A developer complains their application is running slowly. How do you determine if the issue is a disk I/O bottleneck?
#Troubleshooting
#Disk I/O
#Performance Tuning
DevOps Engineer
•
Technical
•
hard
Explain how Docker containers achieve isolation. Dive deep into Linux namespaces and cgroups.
#Docker
#Linux Kernel
#Namespaces
#Cgroups
DevOps Engineer
•
Technical
•
medium
A Kubernetes pod is stuck in CrashLoopBackOff. Walk me through your exact troubleshooting steps to find the root cause.
#Kubernetes
#Troubleshooting
#Containers
DevOps Engineer
•
Technical
•
hard
How does Kafka handle consumer offsets, and what happens if a consumer node fails mid-processing?
#Kafka
#Fault Tolerance
#Message Queues
DevOps Engineer
•
Technical
•
medium
Describe the Linux boot process step-by-step, from pressing the power button to getting the login prompt.
#OS Architecture
#Boot Process
#Systemd
DevOps Engineer
•
Technical
•
medium
Compare and contrast Blue/Green deployments with Canary releases. When would you choose one over the other?
#Deployment Strategies
#Traffic Routing
#Risk Mitigation
DevOps Engineer
•
Technical
•
hard
You receive an alert that a server is out of disk space. You run 'df -h' and it shows 20% free space. What is the issue and how do you fix it?
#Troubleshooting
#Filesystems
#Inodes
DevOps Engineer
•
Technical
•
easy
Explain the DNS resolution process. What is the difference between an A record, an AAAA record, and a CNAME?
#DNS
#Networking Fundamentals
DevOps Engineer
•
Technical
•
medium
How do you handle secrets management (e.g., API keys, database passwords) in a CI/CD pipeline and Kubernetes environment?
#Secrets Management
#HashiCorp Vault
#Kubernetes Secrets
#CI/CD
DevOps Engineer
•
Technical
•
hard
What is BGP (Border Gateway Protocol) and how does it work in the context of routing traffic to LinkedIn's global data centers?
#BGP
#Routing
#Internet Architecture
DevOps Engineer
•
Technical
•
hard
How do you troubleshoot a slow Kafka consumer that is lagging behind the producer? What tuning parameters would you adjust?
#Kafka
#Performance Tuning
#Troubleshooting
DevOps Engineer
•
Technical
•
easy
Explain the difference between a hard link and a soft (symbolic) link in Linux. What happens to each if the original file is deleted?
#Filesystems
#Linux Basics
DevOps Engineer
•
Technical
•
medium
How would you secure a newly provisioned Linux server that needs to be exposed to the internet?
#Linux Security
#Firewalls
#SSH
#Hardening
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Senior EngineerFocuses on core competencies, system constraints, and clear communication.
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Always explain your thought process before writing code or drawing architecture.