20 questions · from 7 interviews
Okta interview questions
Every question candidates reported from their Okta interviews, most frequently asked first. Each links to the write-up it came from, so you can see the round and how it went.
Okta coding and DSA questions
- 01
Rate Limiter using Token Bucket Algorithm
Build a rate limiter in Node.js using the token bucket algorithm. Create an Express app that reads from a config file and exposes an API to send rate limit responses.
From Okta (Auth0) | Staff Backend Engineer | Oct 2026 | Rejected
- 02
Product of Array Except Self
Given an integer array nums, return an array answer such that answer[i] is equal to the product of all the elements of nums except nums[i]. The solution must run in O(n) time and without using division.
Medium · From Okta: Senior Software Engineer Interview Experience | 4.8 YOE
- 03
Course Schedule I
There are a total of numCourses courses you have to take, labeled from 0 to numCourses-1. Some courses may have prerequisites, given as pairs [a, b] where you must take course b before course a. Determine if it is possible to finish all courses.
Medium · From Okta: Senior Software Engineer Interview Experience | 4.8 YOE
- 04
Insert Delete GetRandom O(1) - Duplicates Allowed
Discussion around the optimal approach, data structures, and complexity analysis. Follow‑up questions on handling duplicates efficiently and edge cases.
Hard · From Okta Staff Engineer Interview Experience
- 05
Find Median from Data Stream
Expected optimal solution using heaps. Discussion on balancing logic, complexity, and alternative approaches.
Hard · From Okta Staff Engineer Interview Experience
- 06
Reverse Substrings Between Each Pair of Parentheses
Given a string s that contains lower case English letters and parentheses, reverse the substrings in each pair of matching parentheses, starting from the innermost pair. The final result should not contain any parentheses. Example: s = "a(bc(d)e)f" → after…
Medium · From Okta Staff Software Engineer Interview Experience | May 2026
- 07
CD Rental System Implementation
You are given a list of entries. Each entry is of the form: [shop, cd, price]. For example: [1, 2, 5] means CD 2 is available at shop 1 for price 5. A user can: - Search for shops where a given CD is currently available. - Rent a CD from a shop. - Return a CD…
From Okta Staff Software Engineer Interview Experience | May 2026
- 08
Simple Bank System with Concurrency
Extend the classic simple bank system problem by adding concurrency handling. Implement thread‑safe operations for deposit, withdraw, and transfer using atomic primitives such as compare‑and‑set (CAS) operations (e.g., map.replace(oldValue, newValue)). Ensure…
From Okta Staff Software Engineer Interview Experience | May 2026
- 09
Dynamic Grid with Incremental Values
The interviewer asked me to build a small React app within their pre-configured environment. 💬 Problem Statement: Input: A number n (via input box) Output: A grid of size n x n Grid Logic: On clicking an empty cell → Fill it with max(existingNumbers) + 1 .…
From Okta SDE-2 || Frontend Interview Experience || Rejected
Okta system design questions
- 01
Design Twitter Feed System
Design a system that supports the following operations: 1. postTweet(userId, tweetId) – Create a tweet for a user with a timestamp. 2. follow(followerId, followeeId) – Allow a user to follow another user. 3. unfollow(followerId, followeeId) – Allow a user to…
- 02
Design Cross‑Domain Single Sign‑On Flow
Design a flow where a business owns foo.com and bar.com domains and wants the same user login across both; logging into one should automatically log the user into the other.
From Okta (Auth0) | Staff Backend Engineer | Oct 2026 | Rejected
- 03
Design OIDC‑Based Multi‑Site Login with Third‑Party Access
Design a solution using OpenID Connect (OIDC) to provide login across multiple sites and also allow users to access a third‑party tool within the app.
From Okta (Auth0) | Staff Backend Engineer | Oct 2026 | Rejected
- 04
Design a Notification Service
Design a Notification Service. Topics discussed: reliability and fault tolerance, retry mechanisms, prioritization of messages, delivery guarantees, scalability considerations, handling failures and backpressure, trade‑offs in design decisions.
- 05
Design a Backup and Recovery System
Design a backup and recovery system. Discuss functional requirements (e.g., data backup, restore points, scheduling) and non‑functional requirements (e.g., scalability, durability, consistency, security). Identify potential failure scenarios and propose…
From Okta Staff Software Engineer Interview Experience | May 2026
- 06
Design a Content Publishing Platform
💬 Problem Statement: Design a system where: Admins can publish news (stored as .md files) Users can view the news articles The system should be scalable and performant 🧩 Key Discussion Areas: Role-Based Access Control (Admins vs Readers) Storage and…
Hard · From Okta SDE-2 || Frontend Interview Experience || Rejected
Okta other questions
- 01
Debugging Node.js Express Authentication Endpoint
Given a simple Express API endpoint /authenticate that takes a username and password, runs a DB query, and uses a bcrypt password hash match to return a 200 or error, identify all missing logic such as input validation, proper error handling, appropriate HTTP…
From Okta (Auth0) | Staff Backend Engineer | Oct 2026 | Rejected
- 02
Build Pixel-Perfect React UI
I was tasked with building a pixel-perfect React user interface based on a provided design mockup. The expected tech stack for this take-home assignment included Next.js, React.js, and Tailwind CSS.
- 03
Visual Form Builder Tool
For the take-home assignment, I needed to create a visual Form Builder tool. The tech stack mentioned was Next.js, React.js, and Tailwind CSS.
- 04
Build Reusable Tab Component
During a live coding exercise, I was asked to build a reusable Tab Component from scratch. This was part of the technical discussion round, aiming to assess my understanding of React and JavaScript fundamentals.
- 05
JavaScript Event Loop, Async/Await, Promises & Memory Management
Several code snippets with Promises , async/await, and chaining. Questions on: Event loop , microtasks , macrotasks Promise.resolve().then() vs setTimeout() async vs defer in script tags async/await vs then/catch Memory management in JavaScript Debouncing and…
From Okta SDE-2 || Frontend Interview Experience || Rejected
Okta interview questions FAQ
What questions are asked in Okta interviews?
Candidates reported 20 distinct questions across 7 Okta interviews. 9 coding and DSA questions, 6 system design questions, 5 other questions.
How difficult are Okta interview questions?
Of the questions candidates rated, 0% were easy, 50% medium and 50% hard.