Okta DevOps / SRE Interview Questions

1.Walk me through a time when you went beyond your normal SRE duties to solve a customer-impacting issue. What was the problem and what did you do?

2.Tell me about a time you identified a potential security risk in your infrastructure before it became a problem. How did you approach the situation?

3.Tell me about a time you discovered a security vulnerability or misconfiguration in production infrastructure you were responsible for. How did you handle it?

4.Describe a situation where you took ownership of an infrastructure problem that wasn't technically your responsibility. What was the outcome?

5.Tell me about a time you had to deploy a critical infrastructure change under tight deadline pressure. How did you balance speed with reliability?

6.Walk me through a complex infrastructure project where you had to coordinate across multiple engineering teams. What made it challenging?

7.You need to deploy a Terraform change that adds new IAM policies across 50 AWS accounts for our API Access Management service. How would you structure this deployment to minimize risk?

8.Write a Go script that monitors Redis connections across our authentication cluster and automatically removes unhealthy nodes from the load balancer pool.

9.We're implementing Zero Trust across our identity platform. Walk me through how you'd configure our Kubernetes network policies to ensure authentication service pods can only communicate with authorized databases and no other services.

10.Our SSO service is experiencing intermittent 503 errors during peak login hours. The service runs on Kubernetes with HPA enabled, and monitoring shows CPU and memory are normal. How would you investigate this?

11.Design a monitoring and alerting strategy for a new microservice that handles MFA token validation. This service will process 100k requests per minute with strict SLA requirements. What metrics and alerts would you implement?

12.You're building a CI/CD pipeline for Auth0's customer-facing APIs that need to deploy to multiple regions with zero downtime. Walk me through your deployment strategy.

13.Design a configuration management system for our Okta Integration Network that needs to safely deploy app connector updates to 7,000+ integrations without breaking customer authentication flows.

14.Our Zero Trust architecture requires every service call to be authenticated and authorized. Design a service mesh authentication system that doesn't become a performance bottleneck as we scale to thousands of microservices.

15.Our Adaptive MFA service needs to make real-time risk decisions on login attempts across multiple data centers while maintaining sub-100ms response times. How would you architect the data synchronization between regions?

16.Design a secret rotation system for API Access Management that automatically rotates OAuth client secrets across thousands of customer applications without causing API call failures.

17.You need to build a distributed rate limiting service for our entire identity platform that can handle 100M requests per minute while preventing abuse without impacting legitimate users.

18.Design a real-time audit logging pipeline for Workforce Identity that captures every admin action across all customer tenants and makes it searchable within 30 seconds for compliance teams.

19.Tell me about a time you had to convince another engineering team to adopt a new security practice or tool that would add friction to their workflow. How did you approach the conversation?

20.Describe a time when you had to learn a completely new technology or platform quickly to solve a production issue. What was your approach?

21.Walk me through a situation where you had to balance competing infrastructure priorities from different product teams. How did you make the decision?

22.Tell me about the most complex infrastructure project you've led end-to-end. What made it complex and how did you ensure success?

23.Describe a time when you disagreed with a senior engineer or architect about an infrastructure decision. How did you handle the disagreement?

24.Tell me about a time when you had to make an infrastructure decision with incomplete information that could significantly impact customer authentication flows. Walk me through your thought process.

25.Estimate how many authentication requests Okta's SSO service processes during a typical Monday morning between 8-9 AM. Walk me through your assumptions and calculations.

26.One of our enterprise customers reports that their employees in the London office are experiencing 2-3 second delays when authenticating through our SSO service, but other offices are fine. How would you investigate this geographically isolated performance issue?

27.Our API Access Management service needs to maintain 99.99% uptime, but we're seeing occasional spikes in OAuth token validation latency that could breach our SLA. Estimate the maximum acceptable P99 latency for token validation and explain your reasoning.

28.We're planning to launch Okta Identity Engine in a new AWS region to reduce latency for APAC customers. Estimate the first-year infrastructure costs and walk me through the major cost drivers you'd need to account for.

29.A Fortune 500 customer's Active Directory sync is failing for 20,000 users, and their IT team is escalating because employees can't access critical applications. You have 30 minutes before their CEO calls our executives. How would you triage and communicate progress?

30.Okta processes 15 billion authentication events monthly. If we wanted to add real-time fraud detection that analyzes each authentication attempt, estimate the additional infrastructure costs and performance impact. What trade-offs would you make?