This interview process is for a Software Engineer position at OKX, specifically for the P6.1 level. It aims to assess a candidate's technical proficiency, problem-solving skills, and cultural fit within the company.
Rounds·4
Timeline·~14d
Experience·4 - 7 yrs
Comp band·US$140000 - US$180000
Interview time·180 min
Evaluation
Preparation
Tips
Study plan
Fig · Study plan — 04 phases
01 / 04Phase 01 of 04
Weeks 1-2: Data Structures & Algorithms (LeetCode Medium)
Weeks 1-2: Focus on core data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming, graph traversal). Practice implementing these in your preferred language and analyze their time and space complexity. Solve at least 20-30 LeetCode medium problems.
Phase 02 of 04
Weeks 3-4: System Design Fundamentals & Practice
Weeks 3-4: Dive into system design. Study concepts like scalability, availability, reliability, load balancing, caching, databases (SQL vs. NoSQL), message queues, and microservices. Practice designing common systems like Twitter feed, URL shortener, or a distributed cache. Read relevant articles and case studies.
Phase 03 of 04
Week 5: Blockchain & Fintech Fundamentals
Week 5: Focus on blockchain fundamentals. Understand concepts like distributed ledgers, consensus mechanisms (PoW, PoS), smart contracts, and cryptography. Research how blockchain is applied in financial services and OKX's specific use cases. Read whitepapers and industry reports.
Phase 04 of 04
Week 6: Behavioral & Situational Preparation
Week 6: Prepare for behavioral and situational questions. Reflect on your career experiences and identify examples that demonstrate leadership, teamwork, problem-solving, and handling conflict. Use the STAR method to structure your answers. Also, prepare questions to ask the interviewer about the role, team, and company culture.
Questions
Locations
Fig · Regions — 02 locations
01 / 02Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Rounds
Expand a step for evaluation criteria, sample questions, and prep notes.
Technical Interview - Coding · 45 min · Software Engineer / Senior Software Engineer
This round focuses on your core programming skills. You will be asked to solve one or two coding problems, typically involving data structures and algorithms. The interviewer will assess your ability to write clean, efficient, and correct code, as well as your problem-solving approach and communication skills. Be prepared to explain your thought process, discuss trade-offs, and test your code thoroughly.
What they look for
Evaluation
Sample questions
Given a binary tree, find its inorder traversal.
Implement a function to reverse a linked list.
Find the two numbers in an array that add up to a specific target.
Prep for this round
Common rejection reasons
System Design Interview · 60 min · Senior Software Engineer / Engineering Manager
This round evaluates your ability to design and architect software systems. You'll be presented with a high-level problem (e.g., design a URL shortener, a social media feed, or a distributed cache) and asked to propose a solution. The focus is on your understanding of distributed systems, scalability, database choices, caching strategies, and API design. You should be able to justify your design decisions and discuss potential trade-offs.
What they look for
Evaluation
Sample questions
Design a system like Twitter's news feed.
Design a rate limiter for an API.
How would you design a distributed key-value store?
Prep for this round
Common rejection reasons
Behavioral Interview · 45 min · Hiring Manager / Engineering Manager
This interview focuses on your behavioral and situational responses. The interviewer will ask questions about your past experiences to understand how you handle various work scenarios, such as teamwork, conflict resolution, leadership, and dealing with failure. They will also assess your motivation for joining OKX and your career goals. Prepare to provide specific examples using the STAR method.
What they look for
Evaluation
Sample questions
Tell me about a time you failed. What did you learn from it?
Describe a situation where you had to work with a difficult colleague. How did you manage the relationship?
Why are you interested in working at OKX?
Prep for this round
Common rejection reasons
Technical/Team Fit Interview · 30 min · Potential Peers / Team Members
In this round, you'll meet with potential team members or peers. The goal is to assess your technical alignment with the team's current projects and your ability to collaborate effectively. You might discuss specific technical challenges the team is facing or delve deeper into your past experiences relevant to the team's work. This is also an opportunity for you to ask detailed questions about the team's day-to-day activities and culture.
What they look for
Evaluation
Sample questions
How would you approach debugging a performance issue in a microservice?
What are your thoughts on using Kafka for asynchronous communication in our services?
Can you walk us through a challenging project you worked on recently?
Prep for this round
Common rejection reasons
DSA
Frequently reported on OKX loops
Other guides
