Expedia

Distinguished SDE

Software EngineerOVery High

Expedia's Distinguished Software Engineer (O Level) interview process is designed to assess deep technical expertise, architectural thinking, leadership potential, and a strong cultural fit. Candidates are expected to demonstrate a high level of problem-solving ability, system design skills, and the capacity to influence technical direction within the organization. This role requires a proven track record of delivering complex, scalable, and high-quality software solutions.

Rounds

4

Timeline

~4 days

Experience

10 - 15 yrs

Salary Range

US$180000 - US$250000

Total Duration

225 min

Overall Evaluation Criteria

Technical Proficiency

Technical depth and breadth
Problem-solving and analytical skills
System design and architectural thinking
Leadership and influence
Communication and collaboration
Cultural fit and alignment with Expedia's values

System Design & Architecture

Ability to design scalable, reliable, and maintainable systems
Understanding of trade-offs in system design
Experience with distributed systems and cloud technologies
Proficiency in relevant programming languages and tools

Leadership & Impact

Demonstrated leadership and mentorship capabilities
Ability to drive technical decisions and influence teams
Experience in leading complex projects
Proactive problem identification and resolution

Communication & Collaboration

Clear and concise communication
Effective collaboration with cross-functional teams
Ability to articulate technical concepts to diverse audiences
Active listening skills

Cultural Fit

Alignment with Expedia's core values (e.g., customer focus, integrity, innovation)
Positive attitude and a growth mindset
Ability to thrive in a dynamic environment
Team player mentality

Preparation Tips

1Deep dive into Expedia's technology stack and products.
2Review core computer science fundamentals: data structures, algorithms, operating systems, databases.
3Practice system design problems, focusing on scalability, reliability, and trade-offs.
4Prepare to discuss your past projects in detail, highlighting your contributions and impact.
5Understand Expedia's business domain and the challenges faced by the travel industry.
6Develop strong behavioral examples using the STAR method (Situation, Task, Action, Result).
7Research common interview questions for senior engineering roles.
8Practice explaining complex technical concepts clearly and concisely.
9Prepare thoughtful questions to ask the interviewers about the role, team, and company.

Study Plan

1

Foundational Computer Science

Weeks 1-2: Data Structures, Algorithms, OS, Databases.

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 and space complexity. Review operating system concepts like processes, threads, memory management, and concurrency. Study database fundamentals, including SQL, NoSQL, indexing, and transaction management.

2

System Design & Architecture

Weeks 3-4: System Design, Distributed Systems, Scalability.

Weeks 3-4: Dive deep into system design principles. Study distributed systems concepts (CAP theorem, consistency models, consensus algorithms), microservices architecture, caching strategies, load balancing, message queues, and database scaling. Practice designing systems like Twitter feed, URL shortener, or a ride-sharing service. Focus on identifying bottlenecks and trade-offs.

3

Behavioral & Leadership

Weeks 5-6: Behavioral Questions, Leadership, Cultural Fit.

Weeks 5-6: Prepare for behavioral interviews. Reflect on your career experiences and identify examples that demonstrate leadership, problem-solving, teamwork, conflict resolution, and adaptability. Use the STAR method to structure your answers. Research Expedia's company values and prepare to discuss how you align with them. Also, prepare to discuss your technical leadership philosophy and how you mentor others.

4

Practice & Refinement

Week 7: Mock Interviews, Q&A Preparation.

Week 7: Mock interviews are crucial. Conduct mock interviews with peers or mentors focusing on both technical and behavioral aspects. Get feedback on your communication, problem-solving approach, and overall presentation. Refine your answers and identify areas for improvement. Also, prepare specific questions to ask the interviewers.

Commonly Asked Questions

Design a system to handle real-time flight status updates for millions of users.
Describe a time you had to make a significant technical decision that had a major impact on a product. What was your thought process?
How would you design a distributed caching system for a large e-commerce platform?
Tell me about a challenging bug you encountered in a production environment and how you debugged it.
What are your thoughts on the trade-offs between monolithic and microservices architectures?
How do you ensure the security and privacy of user data in a large-scale application?
Describe your experience with performance optimization and profiling tools.
How do you mentor junior engineers and contribute to a team's technical growth?
Imagine you need to build a recommendation engine for travel packages. How would you approach this?
Discuss a time you disagreed with a technical decision made by your team or manager. How did you handle it?

Location-Based Differences

Seattle, USA

Interview Focus

Emphasis on strategic thinking and long-term technical vision.Assessment of ability to drive technical initiatives across multiple teams.Evaluation of experience with large-scale, mission-critical systems.Focus on leadership and mentorship capabilities.Understanding of Expedia's business domain and its technical challenges.

Common Questions

Discuss a time you had to influence a team to adopt a new technology or approach. What was the outcome?

Describe a complex technical challenge you faced in a distributed system and how you resolved it.

How do you mentor junior engineers and foster technical growth within a team?

In a high-pressure situation, how do you prioritize tasks and ensure project success?

What are your thoughts on the future of cloud computing and its impact on travel technology?

Tips

Be prepared to discuss your contributions to open-source projects or significant technical publications.
Highlight instances where you've led architectural decisions for major product features.
Showcase your ability to communicate complex technical concepts to both technical and non-technical audiences.
Research Expedia's recent technological advancements and strategic goals.
Prepare specific examples of how you've driven innovation and improved engineering practices.

London, UK

Interview Focus

Strong focus on deep technical problem-solving and debugging skills.Assessment of architectural design patterns and their practical application.Evaluation of experience with performance tuning and scalability challenges.Understanding of cloud-native architectures and microservices.Emphasis on collaboration and cross-functional team interaction.

Common Questions

Tell me about a time you had to make a difficult trade-off in a system design. What factors did you consider?

How do you approach debugging a production issue in a high-traffic, distributed environment?

Describe your experience with performance optimization at scale.

What are the key principles of building resilient and fault-tolerant systems?

How do you stay updated with emerging technologies and evaluate their potential application at Expedia?

Tips

Be ready to whiteboard complex system designs and explain your choices.
Prepare detailed examples of performance bottlenecks you've identified and resolved.
Demonstrate a solid understanding of data structures, algorithms, and their performance implications.
Showcase your ability to work effectively in a fast-paced, agile environment.
Familiarize yourself with common distributed systems concepts like CAP theorem, consensus algorithms, etc.

Gurugram, India

Interview Focus

Assessment of end-to-end project ownership and delivery.Evaluation of communication and stakeholder management skills.Focus on software craftsmanship and best practices.Understanding of system resilience and operational excellence.Emphasis on cultural alignment and teamwork.

Common Questions

Describe a project where you had significant ownership and drove it from conception to launch.

How do you handle disagreements with product managers or stakeholders regarding technical direction?

What are your strategies for ensuring code quality and maintainability in large codebases?

Discuss a time you had to refactor a legacy system. What were the challenges and how did you overcome them?

How do you contribute to a positive and inclusive team culture?

Tips

Prepare to discuss your role in the entire software development lifecycle.
Highlight instances where you've improved team processes or mentored colleagues.
Be ready to articulate your design choices and their impact on the business.
Showcase your ability to adapt to changing requirements and priorities.
Emphasize your commitment to continuous learning and professional development.

Process Timeline

1
System Design & Architecture60m
2
Data Structures & Algorithms60m
3
Behavioral & Leadership Interview45m
4
Senior Leadership Interview60m

Interview Rounds

4-step process with detailed breakdown for each round

1

System Design & Architecture

Design a complex, scalable system, discussing trade-offs and technologies.

System DesignVery High
60 minSenior Software Engineer / Architect

This round focuses on your ability to design and architect complex, large-scale systems. You will be presented with a problem statement (e.g., designing a ride-sharing service, a notification system, or a content delivery network) and expected to propose a robust solution. The interviewer will probe into your design choices, trade-offs, scalability considerations, fault tolerance, and data management strategies. Expect to discuss various components, APIs, data models, and technologies.

What Interviewers Look For

Ability to design complex, scalable, and resilient systems.Deep understanding of distributed systems principles.Proficiency in identifying and mitigating potential bottlenecks.Clear articulation of design decisions and justifications.Proactive consideration of failure modes and recovery strategies.

Evaluation Criteria

Clarity and completeness of the system design.
Understanding of scalability, reliability, and maintainability.
Ability to identify and discuss trade-offs.
Knowledge of relevant technologies and patterns.
Problem-solving approach and communication.

Questions Asked

Design a system to handle real-time flight status updates for millions of users.

System DesignScalabilityReal-time

How would you design a distributed caching system for a large e-commerce platform?

System DesignCachingDistributed Systems

Design a URL shortening service like bit.ly.

System DesignAPI DesignDatabases

Preparation Tips

1Practice designing common large-scale systems.
2Familiarize yourself with distributed system concepts.
3Be prepared to whiteboard your design and explain your reasoning.
4Think about scalability, availability, consistency, and latency.
5Consider different database choices and their implications.

Common Reasons for Rejection

Inability to articulate design choices and trade-offs.
Lack of depth in understanding distributed systems concepts.
Poor handling of edge cases or failure scenarios.
Difficulty in scaling the proposed solution.
Unclear or incomplete system design.
2

Data Structures & Algorithms

Solve coding problems involving data structures and algorithms, focusing on efficiency and correctness.

Technical CodingHigh
60 minSenior Software Engineer

This round assesses your fundamental computer science knowledge, focusing on data structures and algorithms. You will be given one or two coding problems that require you to implement solutions using appropriate data structures and algorithms. The interviewer will evaluate your approach to problem-solving, your ability to write efficient and correct code, and your understanding of time and space complexity. Expect to code in a shared editor or on a whiteboard.

What Interviewers Look For

Strong problem-solving skills.Proficiency in data structures and algorithms.Ability to write clean, efficient, and bug-free code.Clear communication of thought process.Consideration of various test cases and edge scenarios.

Evaluation Criteria

Correctness and efficiency of the algorithm.
Code quality and clarity.
Ability to explain the solution and thought process.
Handling of edge cases and constraints.
Understanding of data structures and their applications.

Questions Asked

Given a binary tree, find the lowest common ancestor of two given nodes.

Data StructuresTreesAlgorithms

Implement a function to find the k-th largest element in an unsorted array.

AlgorithmsSortingData Structures

Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent.

AlgorithmsBacktrackingRecursion

Preparation Tips

1Practice coding problems on platforms like LeetCode, HackerRank, or AlgoExpert.
2Master common data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming).
3Focus on optimizing your solutions for time and space complexity.
4Practice explaining your thought process while solving problems.
5Be prepared to discuss the trade-offs of different approaches.

Common Reasons for Rejection

Inability to solve algorithmic problems efficiently.
Poor understanding of time and space complexity.
Bugs in the code implementation.
Difficulty in explaining the thought process.
Not considering edge cases or constraints.
3

Behavioral & Leadership Interview

Assess leadership, teamwork, problem-solving, and cultural fit through behavioral questions.

Behavioral & LeadershipHigh
45 minEngineering Manager / Director

This interview focuses on your behavioral and leadership competencies. You'll be asked questions about your past experiences, focusing on situations where you demonstrated leadership, teamwork, problem-solving, and conflict resolution. The interviewer wants to understand how you handle challenges, influence others, and contribute to a team's success. Prepare specific examples using the STAR method.

What Interviewers Look For

Evidence of technical leadership and mentorship.Ability to drive projects and influence technical direction.Strong communication and collaboration skills.Alignment with Expedia's culture and values.Proactive approach to problem-solving and continuous improvement.

Evaluation Criteria

Demonstration of leadership qualities.
Ability to influence and drive change.
Problem-solving and decision-making skills.
Communication and interpersonal skills.
Cultural fit and alignment with company values.

Questions Asked

Describe a time you had to influence a team to adopt a new technology or approach. What was the outcome?

LeadershipInfluenceCommunication

Tell me about a time you failed. What did you learn from it?

BehavioralLearningResilience

How do you handle disagreements with colleagues or stakeholders?

Conflict ResolutionCommunicationTeamwork

Preparation Tips

1Prepare examples using the STAR method (Situation, Task, Action, Result).
2Reflect on your leadership experiences, mentorship, and project ownership.
3Think about times you've influenced technical decisions or driven change.
4Be ready to discuss your strengths, weaknesses, and career aspirations.
5Research Expedia's values and prepare to demonstrate how you embody them.

Common Reasons for Rejection

Lack of clear examples demonstrating leadership.
Inability to articulate impact and influence.
Poor communication or interpersonal skills.
Not aligning with Expedia's values.
Lack of enthusiasm or engagement.
4

Senior Leadership Interview

Discuss technical strategy, vision, and business impact with senior leadership.

Executive/Senior LeadershipVery High
60 minDirector of Engineering / VP of Engineering

This is typically the final round with a senior leader (Director or VP). The focus is on strategic thinking, technical vision, and leadership at a higher level. You'll discuss your experience in driving technical strategy, influencing organizational change, and making high-level architectural decisions. The interviewer will assess your ability to connect technology with business objectives and your potential to contribute to Expedia's long-term technical roadmap.

What Interviewers Look For

Ability to think strategically about technology and its impact on the business.Experience in setting technical direction and influencing architectural decisions.Strong communication skills, especially with senior stakeholders.A forward-thinking mindset and awareness of industry trends.Deep understanding of how technology enables business goals.

Evaluation Criteria

Strategic thinking and technical vision.
Ability to influence and drive technical strategy.
Communication with senior leadership.
Understanding of business impact of technology.
Experience with architectural decision-making at a high level.

Questions Asked

What are your thoughts on the future of cloud computing and its impact on travel technology?

StrategyCloudFuture Trends

Describe a time you had to make a difficult trade-off in a system design. What factors did you consider?

System DesignDecision MakingTrade-offs

How do you balance innovation with maintaining stable, production-ready systems?

StrategyInnovationOperations

Preparation Tips

1Understand Expedia's business strategy and how technology supports it.
2Prepare to discuss your vision for future technologies and their application.
3Think about how you've influenced technical strategy in previous roles.
4Be ready to discuss your experience with managing technical debt and driving innovation.
5Practice articulating your thoughts clearly and concisely to senior leadership.

Common Reasons for Rejection

Inability to articulate complex technical concepts clearly.
Lack of strategic thinking or business acumen.
Poor communication with senior stakeholders.
Not demonstrating a vision for future technology.
Failure to connect technical solutions to business goals.

Commonly Asked DSA Questions

Frequently asked coding questions at Expedia

View all
Two SumEASYAdd Two NumbersMEDIUMLongest Substring Without Repeating CharactersMEDIUMRoman to IntegerEASYValid ParenthesesEASYFind the Index of the First Occurrence in a StringEASYTrapping Rain WaterHARDJump Game IIMEDIUMGroup AnagramsMEDIUMMerge IntervalsMEDIUM