This interview process is designed to assess candidates for an Expert Software Engineer role at Ozon, level 21. It evaluates deep technical expertise, problem-solving abilities, system design skills, and leadership potential.
Rounds·4
Timeline·~14d
Experience·10 - 15 yrs
Comp band·US$150000 - US$200000
Interview time·240 min
Evaluation
Preparation
Tips
Study plan
Fig · Study plan — 05 phases
01 / 05Phase 01 of 05
Weeks 1-2: DSA fundamentals and practice (LeetCode medium/hard).
Weeks 1-2: Focus on Data Structures and Algorithms. Review common algorithms (sorting, searching, graph traversal) and data structures (arrays, linked lists, trees, hash maps). Practice problems on platforms like LeetCode, HackerRank, focusing on medium to hard difficulty.
Phase 02 of 05
Weeks 3-4: System Design principles and case studies.
Weeks 3-4: Dive into System Design. Study concepts like load balancing, database scaling, caching, microservices architecture, API design, and fault tolerance. Read relevant books and articles, and work through system design case studies.
Phase 03 of 05
Week 5: Distributed Systems concepts and technologies.
Week 5: Focus on Distributed Systems. Understand concepts like CAP theorem, eventual consistency, distributed transactions, and message queuing systems. Explore specific technologies like Kafka, RabbitMQ, and distributed databases.
Phase 04 of 05
Week 6: Behavioral and Leadership preparation.
Week 6: Behavioral and Leadership. Prepare examples of your leadership experience, problem-solving skills, and teamwork. Reflect on your career achievements and how they align with Ozon's values. Practice answering common behavioral questions.
Phase 05 of 05
Week 7: Company research and mock interviews.
Week 7: Ozon Specifics and Mock Interviews. Research Ozon's business, products, and recent news. Conduct mock interviews with peers or mentors to simulate the interview environment and get feedback.
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.
Data Structures And Algorithms · 60 min · Senior Software Engineer / Tech Lead
This round focuses on your fundamental computer science knowledge. You will be asked to solve algorithmic problems, often involving data structures. The interviewer will assess your ability to analyze problems, devise efficient solutions, and write clean, working code. Expect questions that test your understanding of time and space complexity.
What they look for
Evaluation
Sample questions
Given a binary tree, find the lowest common ancestor of two given nodes.
Implement a function to find the k-th largest element in an unsorted array.
Design a data structure that supports insertion, deletion, and getRandom in O(1) time.
Prep for this round
Common rejection reasons
System Design · 75 min · Staff Engineer / Principal Engineer
This round evaluates your ability to design complex software systems. You'll be presented with a high-level problem (e.g., design a social media feed, a ride-sharing service) and expected to propose a scalable, reliable, and maintainable architecture. Focus on identifying components, data flow, APIs, database choices, and potential bottlenecks.
What they look for
Evaluation
Sample questions
Design a distributed key-value store.
Design a rate limiter for an API.
Design a system to count unique visitors to a website in real-time.
Prep for this round
Common rejection reasons
Behavioral Interview · 45 min · Hiring Manager / Engineering Manager
This round focuses on your behavioral and leadership qualities. You'll be asked about your past experiences, how you handle challenges, work with others, and your career aspirations. The interviewer aims to understand your personality, motivation, and how you would fit into the team and company culture.
What they look for
Evaluation
Sample questions
Tell me about a time you had to lead a project. What were the challenges, and how did you overcome them?
Describe a situation where you had a conflict with a colleague. How did you resolve it?
Why are you interested in working at Ozon?
Prep for this round
Common rejection reasons
Executive/Leadership Interview · 60 min · Director of Engineering / VP of Engineering
This final round is with senior leadership and focuses on your strategic thinking, technical vision, and potential to influence the engineering organization. Expect questions about your career philosophy, how you approach technical challenges at a high level, and your thoughts on the future of technology and Ozon's role within it.
What they look for
Evaluation
Sample questions
What is your philosophy on building high-performing engineering teams?
How do you stay ahead of technological trends and ensure your team does the same?
Imagine you are tasked with improving the overall engineering productivity at Ozon. What would be your first steps?
Prep for this round
Common rejection reasons
DSA
Frequently reported on Ozon loops
Other guides
