Scale Engineer

Junior

Software Engineer17Medium

The interview process for a Junior Software Engineer at Ozon (Level 17) is designed to assess foundational technical skills, problem-solving abilities, and cultural fit. It typically involves multiple stages, starting with an HR screening, followed by technical rounds focusing on data structures, algorithms, and basic system design, and concluding with a managerial or team lead interview to evaluate collaboration and growth potential.

Rounds·4

Timeline·~7d

Experience·0 - 2 yrs

Comp band·US$50000 - US$70000

Interview time·180 min

Evaluation

What they measure.

  • Problem-solving skills
  • Algorithmic thinking
  • Coding proficiency
  • Understanding of data structures
  • Communication skills
  • Teamwork and collaboration
  • Learning agility
  • Cultural fit

Preparation

How to prepare.

Tips

  1. Review fundamental data structures (arrays, linked lists, trees, graphs, hash maps) and their time/space complexities.
  2. Practice common algorithms (sorting, searching, graph traversal, dynamic programming).
  3. Understand basic object-oriented programming (OOP) principles.
  4. Familiarize yourself with Big O notation for analyzing algorithm efficiency.
  5. Prepare to discuss your projects, highlighting your contributions and challenges.
  6. Research Ozon's products, services, and company culture.
  7. Practice coding problems on platforms like LeetCode or HackerRank.
  8. Prepare behavioral questions using the STAR method (Situation, Task, Action, Result).

Study plan

Fig · Study plan — 04 phases

01 / 04
01

Phase 01 of 04

Data Structures Fundamentals

Weeks 1-2: Data Structures (Arrays, Linked Lists, Stacks, Queues, Hash Maps). Basic problems.

Weeks 1-2: Focus on core data structures like arrays, linked lists, stacks, queues, and hash maps. Understand their implementations and time/space complexities. Practice basic array and string manipulation problems.

Questions

Commonly asked.

  • What is the difference between an abstract class and an interface?
  • Explain the concept of recursion with an example.
  • How would you design a URL shortener (high-level)?
  • Describe a situation where you had to deal with a difficult colleague.
  • What are your career goals for the next 3-5 years?
  • Write a function to reverse a string.
  • What is a deadlock and how can it be prevented?
  • Tell me about a time you failed. What did you learn from it?
  • What is the time complexity of binary search?
  • How do you stay updated with new technologies?

Locations

Regional differences.

Fig · Regions — 02 locations

01 / 02

Location

Remote

Interview focus

Understanding of core programming concepts.Ability to articulate thought process during problem-solving.Enthusiasm for learning and growth.Basic understanding of Ozon's tech stack (if applicable).

Common questions

  • Tell me about a challenging project you worked on during your studies or internships.
  • How do you approach learning a new programming language or technology?
  • Describe a time you had to debug a complex issue. What was your process?
  • What are your favorite data structures and why?
  • Explain the difference between a process and a thread.

Tips

  • Be prepared to discuss academic projects or personal coding projects in detail.
  • Showcase your eagerness to learn and adapt.
  • Research Ozon's mission and values.
  • Practice explaining technical concepts clearly and concisely.

Rounds

Round-by-round.

Expand a step for evaluation criteria, sample questions, and prep notes.

DSA

Coding questions at Ozon.

Frequently reported on Ozon loops

View all at Ozon

Other guides

More at Ozon.