The Software Engineer L6 interview at Optiver is a rigorous process designed to assess candidates' technical expertise, problem-solving abilities, and cultural fit for a senior role. It typically involves multiple rounds focusing on data structures, algorithms, system design, and behavioral aspects, with a strong emphasis on practical application and real-world scenarios.
Rounds·4
Timeline·~14d
Experience·5 - 10 yrs
Comp band·US$180000 - US$250000
Interview time·210 min
Evaluation
Preparation
Tips
Study plan
Fig · Study plan — 04 phases
01 / 04Phase 01 of 04
Weeks 1-2: Data Structures & Algorithms (LeetCode Medium/Hard).
Weeks 1-2: Focus on core data structures (arrays, linked lists, trees, graphs, hash tables) and algorithms (sorting, searching, dynamic programming, graph traversal). Practice implementing these and analyzing their time/space complexity. Solve LeetCode problems tagged 'Medium' and 'Hard'.
Phase 02 of 04
Weeks 3-4: System Design (Distributed Systems, Databases, Caching).
Weeks 3-4: Dive into system design concepts. Study distributed systems, databases (SQL/NoSQL), caching, load balancing, message queues, and microservices. Practice designing common systems like Twitter feed, URL shortener, or a distributed cache. Focus on trade-offs and scalability.
Phase 03 of 04
Week 5: Behavioral Preparation (STAR method, Optiver values).
Week 5: Prepare for behavioral questions. Reflect on your career, identify key projects, leadership experiences, and challenging situations. Use the STAR method (Situation, Task, Action, Result) to structure your answers. Research Optiver's culture and values.
Phase 04 of 04
Week 6: Low-Latency & Concurrency (Performance, Multithreading).
Week 6: Focus on low-latency and high-frequency trading concepts if applicable to the specific role or location. Review concurrency, multithreading, and performance optimization techniques. Practice coding problems related to these areas.
Questions
Locations
Fig · Regions — 03 locations
01 / 03Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Rounds
Expand a step for evaluation criteria, sample questions, and prep notes.
Data Structures And Algorithms Interview · 45 min · Senior Software Engineer
This round focuses on assessing your core computer science fundamentals. You will be presented with one or two coding problems that require you to implement algorithms and use appropriate data structures. The interviewer will evaluate your ability to understand the problem, devise a solution, write clean code, and analyze its time and space complexity. Expect to code on a whiteboard or a shared online editor.
What they look for
Evaluation
Sample questions
Given a binary tree, find its inorder traversal.
Implement a function to find the median of a stream of numbers.
Find the longest substring without repeating characters.
Prep for this round
Common rejection reasons
System Design Interview · 60 min · Senior Staff Engineer / Architect
This round assesses your ability to design and architect complex software systems. You'll be given a high-level problem (e.g., design a social media feed, a URL shortener, or a distributed key-value store) and expected to propose a robust and scalable solution. The focus is on your understanding of distributed systems, databases, caching, APIs, and trade-offs involved in system design.
What they look for
Evaluation
Sample questions
Design a distributed caching system.
Design a rate limiter for an API.
Design a system to process and store real-time sensor data.
Prep for this round
Common rejection reasons
Behavioral Interview · 45 min · Hiring Manager / Senior Team Member
This round focuses on your behavioral and cultural fit. You'll be asked questions about your past experiences, how you handle specific situations (e.g., conflicts, failures, successes), your motivations, and your career goals. The interviewer wants to understand how you work in a team, your leadership potential, and whether you align with Optiver's values.
What they look for
Evaluation
Sample questions
Tell me about a time you faced a significant technical challenge and how you overcame it.
Describe a situation where you had a conflict with a colleague and how you resolved it.
What are your strengths and weaknesses as a software engineer?
Why are you interested in working at Optiver?
Prep for this round
Common rejection reasons
Managerial / Leadership Interview · 60 min · Engineering Manager / Director
This final round is typically with the hiring manager or a senior leader. It focuses on your overall experience, leadership potential, strategic thinking, and how you can contribute to the team and company at a senior level. Expect questions about your career goals, how you approach technical leadership, and your vision for software development.
What they look for
Evaluation
Sample questions
How would you mentor junior engineers on your team?
Describe a time you had to influence a technical decision across multiple teams.
What is your vision for a high-performing engineering team?
How do you stay updated with the latest technologies and trends?
Prep for this round
Common rejection reasons
DSA
Frequently reported on Optiver loops
Other guides
