Palantir
Big data analytics company for defense, intelligence, and enterprise.
5 Rounds
~28 Days
Very 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
Cloud Engineer
•
Behavioral
•
medium
Tell me about a time you caused a production outage. What happened, how did you fix it, and what did you learn?
#Incident Management
#Accountability
#Post-mortems
Cloud Engineer
•
Behavioral
•
medium
Describe a situation where a client or stakeholder requested an architectural change that you knew was insecure or unscalable. How did you handle it?
#Stakeholder Management
#Security
#Pushback
Cloud Engineer
•
Behavioral
•
medium
You are on call and receive three critical alerts simultaneously: a database CPU spike, a failing Kubernetes ingress controller, and a spike in 500 errors on the main API. How do you prioritize and respond?
#Prioritization
#On-call
#Triage
Cloud Engineer
•
Behavioral
•
medium
Tell me about a time you had to dive deep into a technology or system you knew nothing about to solve a critical issue.
#Problem Solving
#Adaptability
#Curiosity
Cloud Engineer
•
Behavioral
•
easy
Describe a time you automated a tedious or manual process. What was the process, how did you automate it, and what was the business impact?
#Automation
#Efficiency
#Initiative
Cloud Engineer
•
Behavioral
•
hard
Palantir values 'Outcome over Process'. Give an example of a time you bypassed standard procedures or processes to achieve a critical outcome.
#Decision Making
#Risk Management
#Palantir Values
Cloud Engineer
•
Coding
•
easy
Write a script to parse a 50GB web server log file and return the top 10 IP addresses that generated HTTP 5xx errors.
#Python
#Bash
#Log Parsing
#Data Structures
Cloud Engineer
•
Coding
•
medium
Given a list of services and their dependencies, write a function to determine a valid deployment order. If there is a circular dependency, throw an error.
#Graphs
#Topological Sort
#DFS
Cloud Engineer
•
Coding
•
medium
Write a function that takes a list of IPv4 CIDR blocks and merges any overlapping blocks into the smallest possible list of CIDRs.
#Networking
#Intervals
#Bit Manipulation
Cloud Engineer
•
Coding
•
medium
Implement a Token Bucket rate limiter class in Python or Go. It should allow a specific capacity and refill rate.
#Rate Limiting
#Concurrency
#Object-Oriented Design
Cloud Engineer
•
Coding
•
medium
Write a concurrent tool in Go or Python that takes a list of 10,000 URLs, checks their SSL certificate expiration dates, and alerts if any expire within 30 days.
#Concurrency
#Networking
#Security
Cloud Engineer
•
Coding
•
medium
Write a function to validate if a given JSON object matches a specific schema definition (e.g., checking required fields, data types, and nested structures).
#JSON
#Recursion
#Validation
Cloud Engineer
•
System Design
•
hard
Design a continuous deployment system for an air-gapped environment. How do you securely transfer and deploy container images and configuration updates without internet access?
#CI/CD
#Security
#Air-gapped
#Architecture
Cloud Engineer
•
System Design
•
hard
Design a multi-region, active-active architecture for a highly available data ingestion API that processes millions of events per minute.
#High Availability
#Load Balancing
#Data Ingestion
#Distributed Systems
Cloud Engineer
•
System Design
•
medium
Design a centralized logging and telemetry system for a fleet of 10,000 edge nodes. The nodes have intermittent internet connectivity.
#Observability
#Edge Computing
#Data Pipelines
Cloud Engineer
•
System Design
•
hard
Design a secure, multi-tenant data processing pipeline where clients can upload custom Python scripts to transform their data.
#Security
#Multi-tenancy
#Sandboxing
#Data Pipelines
Cloud Engineer
•
System Design
•
medium
Design a distributed rate-limiting service for an internal API gateway that handles 100,000 requests per second across multiple regions.
#Distributed Systems
#Rate Limiting
#Redis
Cloud Engineer
•
System Design
•
hard
Design an infrastructure deployment strategy for a highly classified client where no internet access is allowed, and hardware is completely isolated.
#On-Premises
#Air-gapped
#Infrastructure as Code
Cloud Engineer
•
Technical
•
medium
Walk me through how you would debug a Kubernetes Pod that is stuck in a CrashLoopBackOff state in a production environment.
#Kubernetes
#Debugging
#Containers
Cloud Engineer
•
Technical
•
medium
Your team uses Terraform for infrastructure provisioning. The Terraform state file becomes corrupted or out of sync with actual cloud resources. How do you recover?
#Terraform
#State Management
#Disaster Recovery
Cloud Engineer
•
Technical
•
medium
Explain the exact lifecycle of a DNS query from the moment a user types a URL in their browser to when the IP is resolved.
#DNS
#Networking
#Protocols
Cloud Engineer
•
Technical
•
hard
Explain how AWS IAM Role assumption works across different AWS accounts. What policies are required on both sides?
#AWS
#IAM
#Security
Cloud Engineer
•
Technical
•
medium
How would you implement strict network isolation between different tenant workloads running in the same Kubernetes cluster?
#Kubernetes
#Network Policies
#Multi-tenancy
Cloud Engineer
•
Technical
•
hard
You log into a Linux server and notice the load average is extremely high, but CPU utilization is near 0%. What is likely happening and how do you troubleshoot it?
#Linux
#Performance Tuning
#I/O
Cloud Engineer
•
Technical
•
medium
Compare and contrast AWS VPC Peering and AWS Transit Gateway. When would you choose one over the other?
#AWS
#Networking
#VPC
Cloud Engineer
•
Technical
•
hard
Walk me through your strategy for upgrading a production AWS EKS cluster to a new Kubernetes minor version with zero downtime.
#Kubernetes
#AWS EKS
#Zero Downtime
Cloud Engineer
•
Technical
•
medium
What is the difference between a Kubernetes Pod being OOMKilled and a Pod being Evicted? How do you fix each?
#Kubernetes
#Resource Management
#Debugging
Cloud Engineer
•
Technical
•
hard
You suspect packets are being dropped between a web server and a database server. How do you prove this using Linux command-line tools?
#Linux
#Packet Capture
#Troubleshooting
Cloud Engineer
•
Technical
•
medium
How would you secure an AWS S3 bucket that stores highly sensitive, classified data for a government client?
#AWS
#S3
#Security
#Compliance
Cloud Engineer
•
Technical
•
hard
Explain how you would implement mutual TLS (mTLS) between microservices in a Kubernetes cluster. What are the operational challenges?
#Kubernetes
#mTLS
#Service Mesh
#Cryptography
Cloud Engineer
•
Technical
•
medium
How do you handle database schema migrations in a CI/CD pipeline for a high-traffic application without causing downtime?
#CI/CD
#Databases
#Zero Downtime
Cloud Engineer
•
Technical
•
hard
A malicious actor is launching a TCP SYN flood attack against your load balancer. How does this attack work, and how do you mitigate it at the infrastructure level?
#Networking
#DDoS
#Linux Kernel
Cloud Engineer
•
Technical
•
easy
Compare Helm and Kustomize for managing Kubernetes manifests. In what scenarios would you choose one over the other?
#Kubernetes
#Helm
#Kustomize
Cloud Engineer
•
Technical
•
medium
How do you optimize a Dockerfile for a Python or Node.js application to minimize image size and maximize security?
#Docker
#Security
#Optimization
Cloud Engineer
•
Technical
•
medium
When designing a Terraform module for internal company use, what best practices do you follow to ensure it is reusable, secure, and maintainable?
#Terraform
#Software Engineering
#Best Practices
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
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Think Out Loud
Always explain your thought process before writing code or drawing architecture.