Avito

Software Engineer

Software EngineerE7Hard

Avito is looking for an experienced Software Engineer at the E7 level to join our dynamic team. This role involves designing, developing, and maintaining scalable and robust software solutions that drive our platform forward. We are seeking individuals with a strong technical background, excellent problem-solving skills, and a passion for innovation.

Rounds

5

Timeline

~14 days

Experience

7 - 10 yrs

Salary Range

US$120000 - US$150000

Total Duration

255 min

Overall Evaluation Criteria

Technical Skills

Technical Proficiency: Depth of knowledge in relevant programming languages, data structures, algorithms, and system design.
Problem-Solving Skills: Ability to analyze complex problems, devise effective solutions, and articulate the thought process.
System Design & Architecture: Capacity to design scalable, reliable, and maintainable systems.
Experience & Impact: Demonstrated track record of delivering impactful projects and contributing to team success.
Communication & Collaboration: Clarity in expressing ideas, active listening, and ability to work effectively with others.
Leadership & Mentorship: Potential to guide and mentor junior engineers and influence technical direction.

Behavioral & Cultural Fit

Cultural Fit: Alignment with Avito's values, teamwork, and positive attitude.
Motivation & Enthusiasm: Genuine interest in the role and Avito's mission.
Adaptability: Willingness to learn and adapt to new technologies and challenges.

Preparation Tips

1Review core computer science fundamentals: data structures, algorithms, operating systems, and databases.
2Practice coding problems on platforms like LeetCode, HackerRank, focusing on medium to hard difficulty.
3Study system design principles for building scalable and reliable applications.
4Prepare to discuss your past projects in detail, focusing on your contributions, challenges, and learnings.
5Research Avito's products, services, and company culture.
6Prepare questions to ask the interviewers about the role, team, and company.
7Practice behavioral questions using the STAR method (Situation, Task, Action, Result).

Study Plan

1

Data Structures and Algorithms

Weeks 1-2: Data Structures & Algorithms. Solve 40-60 problems.

Weeks 1-2: Focus on Data Structures and Algorithms. Cover arrays, linked lists, trees, graphs, hash tables, sorting, searching, dynamic programming, and greedy algorithms. Solve at least 20-30 problems per week.

2

System Design

Weeks 3-4: System Design. Study core concepts and case studies.

Weeks 3-4: Dive into System Design. Study concepts like scalability, availability, reliability, load balancing, caching, database design (SQL/NoSQL), message queues, and microservices architecture. Review common system design interview questions and case studies.

3

Behavioral and Situational Preparation

Week 5: Behavioral Questions & Company Research. Prepare STAR examples.

Week 5: Prepare for Behavioral and Situational Questions. Reflect on your past experiences and prepare examples using the STAR method for questions related to teamwork, problem-solving, leadership, and handling conflict. Research Avito's values and culture.

4

Mock Interviews and Final Preparation

Week 6: Mock Interviews & Final Review. Practice and prepare questions.

Week 6: Mock Interviews and Review. Conduct mock interviews with peers or mentors to simulate the actual interview environment. Review weak areas identified during practice and mock interviews. Prepare thoughtful questions for the interviewers.

Commonly Asked Questions

Describe a complex system you designed or significantly contributed to. What were the key challenges and how did you address them?
How would you design a URL shortening service like bit.ly?
Explain the difference between SQL and NoSQL databases and when you would use each.
Tell me about a time you had to deal with a production issue. What was your process for debugging and resolving it?
How do you approach code reviews? What do you look for?
What are your thoughts on containerization technologies like Docker and orchestration tools like Kubernetes?
Describe a situation where you had to influence a technical decision. What was your strategy?
How do you handle technical debt?
What are the trade-offs between monolithic and microservices architectures?
Tell me about a time you failed. What did you learn from it?

Location-Based Differences

Moscow

Interview Focus

Deep understanding of distributed systems and cloud-native technologies (e.g., Kubernetes, Docker).Experience with performance optimization and scalability challenges.Leadership potential and ability to mentor junior engineers.Strategic thinking regarding system architecture and technology choices.Strong communication skills and ability to articulate complex technical concepts.

Common Questions

How would you handle a sudden surge in traffic on a critical service?

Describe a time you had to mentor a junior engineer. What was your approach?

What are your thoughts on the current microservices architecture at Avito? What improvements would you suggest?

How do you ensure code quality and maintainability in a large codebase?

Tell me about a challenging technical problem you solved recently and how you approached it.

Tips

Be prepared to discuss your experience with large-scale systems and high-traffic environments.
Highlight instances where you've influenced technical direction or mentored teams.
Research Avito's tech stack and be ready to offer informed opinions and suggestions.
Practice explaining complex technical decisions and trade-offs clearly.
Showcase your ability to collaborate effectively with cross-functional teams.

Saint Petersburg

Interview Focus

Proficiency in core programming languages and data structures.Experience in designing and implementing RESTful APIs.Understanding of database design and optimization (SQL and NoSQL).Problem-solving skills and analytical thinking.Ability to work independently and take ownership of tasks.

Common Questions

How do you approach designing a new feature from scratch, considering scalability and reliability?

Describe a situation where you disagreed with a technical decision made by your team lead. How did you handle it?

What are the key considerations when migrating a monolithic application to microservices?

How do you stay updated with the latest trends in software engineering?

Tell me about a project where you had to work with legacy code. What challenges did you face and how did you overcome them?

Tips

Brush up on your data structures and algorithms, especially those relevant to backend development.
Prepare examples of your API design and implementation experience.
Be ready to discuss your approach to database management and performance tuning.
Demonstrate your problem-solving process with concrete examples.
Emphasize your ability to learn quickly and adapt to new technologies.

Process Timeline

1
HR Screening Call45m
2
Coding Interview60m
3
System Design Interview60m
4
Hiring Manager Interview45m
5
Senior Leadership Interview45m

Interview Rounds

5-step process with detailed breakdown for each round

1

HR Screening Call

Initial screening call with HR to assess basic qualifications and cultural fit.

HR ScreeningMedium
45 minRecruiter/HR

This initial screening call is conducted by our HR team to understand your background, motivation for applying, and basic fit with the role and company culture. They will discuss your resume, career aspirations, and answer any initial questions you might have about Avito or the position.

What Interviewers Look For

Fundamental programming knowledge.Ability to think logically.Clear communication.

Evaluation Criteria

Understanding of core programming concepts.
Basic problem-solving abilities.
Communication skills.

Questions Asked

Tell me about yourself.

Behavioral

Why are you interested in Avito?

BehavioralMotivation

What are your strengths and weaknesses?

Behavioral

Why are you looking to leave your current role?

Behavioral

What are your salary expectations?

Compensation

Preparation Tips

1Be ready to talk about your resume and career goals.
2Research Avito's mission, values, and recent news.
3Prepare questions about the role and company culture.
4Be enthusiastic and professional.

Common Reasons for Rejection

Inability to articulate thought process clearly.
Lack of depth in understanding fundamental concepts.
Poor problem-solving approach.
Insufficient experience with relevant technologies.
2

Coding Interview

Solve coding problems focusing on data structures and algorithms.

Technical Interview - CodingHard
60 minSoftware Engineer

This round focuses on your core technical skills. You will be asked to solve one or two coding problems, typically involving data structures and algorithms. The interviewer will assess your problem-solving approach, coding style, efficiency, and ability to explain your solution.

What Interviewers Look For

Strong understanding of fundamental algorithms and data structures.Ability to translate a problem into working code.Attention to detail and edge case handling.Clear explanation of the solution and complexity analysis.

Evaluation Criteria

Proficiency in data structures and algorithms.
Coding skills (clean, efficient, correct code).
Problem-solving approach.
Ability to analyze time and space complexity.
Handling of edge cases.

Questions Asked

Given an array of integers, find the contiguous subarray with the largest sum.

ArrayDynamic Programming

Implement a function to reverse a linked list.

Linked List

Find the kth smallest element in a binary search tree.

TreeBinary Search TreeHeap

Given a string, find the length of the longest substring without repeating characters.

StringSliding Window

Design a data structure that supports insert, delete, search, and getRandom in O(1) average time.

Hash TableArrayDesign

Preparation Tips

1Practice coding problems on platforms like LeetCode, HackerRank, focusing on medium to hard difficulty.
2Be comfortable with common data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming).
3Practice explaining your thought process out loud as you code.
4Consider time and space complexity for your solutions.
5Write clean, well-structured, and readable code.

Common Reasons for Rejection

Inability to solve coding problems efficiently.
Incorrect or suboptimal algorithmic approaches.
Poorly written or unreadable code.
Difficulty explaining the solution.
Not considering edge cases or constraints.
3

System Design Interview

Design a scalable system and discuss architectural choices.

Technical Interview - System DesignHard
60 minSenior Software Engineer / Architect

This round assesses your ability to design and architect complex software systems. You'll be presented with a high-level problem (e.g., design a social media feed, a URL shortener, a ride-sharing service) and expected to propose a scalable, reliable, and maintainable solution. This includes discussing database choices, APIs, caching strategies, load balancing, and potential bottlenecks.

What Interviewers Look For

Ability to design complex systems from scratch.Knowledge of architectural patterns and best practices.Understanding of scalability, reliability, and maintainability.Ability to justify design decisions and discuss trade-offs.Consideration of various components like databases, caching, load balancers, etc.

Evaluation Criteria

System design capabilities.
Understanding of distributed systems.
Scalability and performance considerations.
Trade-off analysis.
Clarity of design and communication.

Questions Asked

Design a system like Twitter's news feed.

System DesignScalabilityDistributed Systems

How would you design a rate limiter?

System DesignAPI Design

Design a distributed key-value store.

System DesignDistributed SystemsDatabases

How would you design an API for a ride-sharing service?

System DesignAPI DesignMicroservices

Design a system to handle real-time analytics for a website.

System DesignReal-timeData Processing

Preparation Tips

1Study common system design patterns and principles.
2Review case studies of popular systems (e.g., Twitter feed, Netflix streaming, Google search).
3Practice designing systems by breaking down the problem, identifying requirements (functional and non-functional), and proposing solutions for each component.
4Be prepared to discuss trade-offs and justify your choices.
5Understand concepts like CAP theorem, eventual consistency, and different database types.

Common Reasons for Rejection

Inability to design scalable and robust systems.
Lack of consideration for trade-offs and constraints.
Poor understanding of distributed systems concepts.
Failure to address non-functional requirements like availability and latency.
Inability to communicate design choices effectively.
4

Hiring Manager Interview

Discuss your experience, teamwork, and career goals with the hiring manager.

Behavioral And Managerial InterviewMedium
45 minHiring Manager

This interview is with the hiring manager to assess your overall fit with the team and the company. They will delve deeper into your experience, leadership potential, and how you handle various work situations. This is also an opportunity for you to understand the team dynamics, projects, and career growth opportunities.

What Interviewers Look For

How you work with others.Your approach to conflict resolution.Your ability to mentor or be mentored.Your passion for technology and continuous learning.Alignment with Avito's core values.

Evaluation Criteria

Teamwork and collaboration.
Problem-solving approach in a team context.
Leadership potential.
Adaptability and learning agility.
Cultural fit with Avito.

Questions Asked

Tell me about a time you had a conflict with a colleague. How did you resolve it?

BehavioralConflict Resolution

Describe a situation where you had to lead a project or a team. What was your approach?

BehavioralLeadership

How do you handle constructive criticism?

BehavioralFeedback

What motivates you in a work environment?

BehavioralMotivation

Where do you see yourself in 5 years?

BehavioralCareer Goals

Preparation Tips

1Prepare specific examples using the STAR method for behavioral questions.
2Think about your career goals and how this role aligns with them.
3Be ready to discuss your leadership style and experience.
4Show enthusiasm for the role and the company.
5Prepare thoughtful questions about the team, projects, and challenges.

Common Reasons for Rejection

Lack of alignment with team values.
Poor communication or collaboration skills.
Negative attitude or lack of enthusiasm.
Inability to provide specific examples for behavioral questions.
Mismatch in career aspirations or expectations.
5

Senior Leadership Interview

Discuss strategic thinking and leadership with a senior engineering leader.

Executive/Senior Leadership InterviewHard
45 minDirector of Engineering / VP of Engineering

This final round is typically with a senior leader (Director or VP) to assess your strategic thinking, leadership potential, and overall alignment with Avito's engineering vision. They will likely ask high-level questions about technology trends, your experience in influencing technical strategy, and your vision for the future.

What Interviewers Look For

High-level technical judgment.Ability to think about the long-term impact of technical decisions.Experience in influencing technical direction.Strong communication and presentation skills.Alignment with Avito's engineering principles.

Evaluation Criteria

Strategic thinking and technical vision.
Leadership and influence.
Ability to drive technical initiatives.
Communication of complex ideas.
Overall fit with Avito's engineering culture.

Questions Asked

What are the biggest technical challenges facing Avito in the next 3-5 years?

Strategic ThinkingVision

How would you foster a culture of innovation within an engineering team?

LeadershipCulture

Describe a time you had to make a significant technical decision with incomplete information.

Decision MakingRisk Management

What emerging technologies do you think will have the most impact on our industry?

Technology TrendsVision

How do you balance technical excellence with business needs?

StrategyBusiness Acumen

Preparation Tips

1Think about the long-term technical challenges and opportunities facing Avito.
2Be prepared to discuss your experience in driving technical change or innovation.
3Articulate your vision for software engineering best practices.
4Showcase your ability to think strategically about technology.
5Ask insightful questions about the company's technical roadmap and challenges.

Common Reasons for Rejection

Lack of alignment with senior leadership vision.
Inability to demonstrate strategic thinking.
Poor communication of high-level technical concepts.
Lack of confidence or conviction in technical opinions.
Not asking insightful questions.

Commonly Asked DSA Questions

Frequently asked coding questions at Avito

View all
Two SumEASYAdd Two NumbersMEDIUMGenerate ParenthesesMEDIUMMerge Sorted ArrayEASYKth Largest Element in an ArrayMEDIUMTop K Frequent ElementsMEDIUMAdd StringsEASYSum of Subarray MinimumsMEDIUMAdd to Array-Form of IntegerEASY