# Software Engineer 1
**Role:** Software Engineer · **Level:** SE 1
**Company:** [eBay](https://scaleengineer.com/companies/ebay)
**Difficulty:** Medium
**Salary:** US$85000 - US$110000
**Experience:** 0 - 2
**Timeline:** ~14 days
This interview process for a Software Engineer 1 role at eBay is designed to assess a candidate's foundational technical skills, problem-solving abilities, and cultural fit within the company. It typically involves multiple rounds, starting with an HR screening, followed by technical interviews focusing on data structures, algorithms, and coding, and concluding with a behavioral or system design interview with a hiring manager or senior engineer.
Canonical: https://scaleengineer.com/interviews/ebay/se-1-software-engineer
---
## Overall evaluation

- Technical Skills
- Behavioral and Cultural Fit

## Questions asked

- Write a function to reverse a linked list.
- Given an array of integers, find the two numbers that add up to a specific target.
- Explain the difference between a process and a thread.
- Describe a situation where you had to deal with a difficult stakeholder.
- How would you design a URL shortener service?
- What are the principles of RESTful API design?
- Tell me about a time you made a mistake and how you handled it.
- What is Big O notation and why is it important?
- How do you approach testing your code?
- Why are you interested in working at eBay?

## Preparation tips

### lists

- Review fundamental data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming, graph traversal).
- Practice coding problems, focusing on time and space complexity analysis.
- Understand object-oriented programming (OOP) concepts.
- Familiarize yourself with common software development methodologies (Agile, Scrum).
- Prepare for behavioral questions by thinking about past experiences using the STAR method (Situation, Task, Action, Result).
- Research eBay's products, services, and recent news.
- Understand the specific technologies and programming languages mentioned in the job description.
- Prepare questions to ask the interviewer about the role, team, and company culture.

### studyPlan

- {"title":"Data Structures and Algorithms Fundamentals","longDescription":"Weeks 1-2: Focus on core data structures like arrays, linked lists, stacks, queues, trees, and hash maps. Practice implementing them and solving problems related to their usage. Understand their time and space complexities. Also, begin reviewing basic sorting and searching algorithms.","shortDescription":"Weeks 1-2: Data Structures (Arrays, Lists, Trees, Maps) & Basic Algorithms (Sorting, Searching)."}
- {"title":"Algorithmic Problem Solving","longDescription":"Weeks 3-4: Dive deeper into algorithms, including dynamic programming, graph algorithms (BFS, DFS, Dijkstra's), and recursion. Practice problems that require optimizing solutions for time and space complexity. Start working on medium-difficulty coding challenges.","shortDescription":"Weeks 3-4: Advanced Algorithms (DP, Graphs, Recursion) & Medium Coding Challenges."}
- {"title":"Object-Oriented Programming and System Design Basics","longDescription":"Week 5: Focus on object-oriented programming (OOP) principles (encapsulation, inheritance, polymorphism, abstraction) and design patterns. If the role involves system design, start learning about distributed systems, databases, caching, and API design.","shortDescription":"Week 5: OOP Concepts & Introduction to System Design."}
- {"title":"Behavioral Preparation and Company Research","longDescription":"Week 6: Prepare for behavioral interviews. Use the STAR method to structure your answers to common questions about teamwork, challenges, failures, and successes. Research eBay's company culture, values, and recent projects. Prepare insightful questions to ask the interviewers.","shortDescription":"Week 6: Behavioral Interview Prep & Company Research."}

## Location differences

- {"location":"San Jose, USA","differences":{"tips":["Research eBay's presence and initiatives in this specific region.","Be prepared to discuss projects relevant to the local market.","Practice articulating your thoughts clearly in the primary language of the office."],"interviewFocus":["Adaptability to local work culture","Communication skills in the local language","Understanding of local market trends"],"commonQuestions":["Tell me about a challenging project you worked on.","How do you handle tight deadlines?","Describe a time you disagreed with a teammate."]}}
- {"location":"Bengaluru, India","differences":{"tips":["Brush up on fundamental data structures and algorithms.","Practice coding problems on platforms like LeetCode or HackerRank.","Be ready to explain your thought process while coding."],"interviewFocus":["Core computer science fundamentals","Problem-solving approach","Coding proficiency"],"commonQuestions":["What are your thoughts on agile methodologies?","How do you approach debugging complex issues?","Can you explain the concept of recursion?"]}}

## Round 1: HR Screening
**Type:** HR Screening · **Difficulty:** Easy · **Duration:** 30 min
Initial screening to assess basic qualifications, motivation, and cultural fit.
The initial HR screening is a brief conversation to understand your background, career aspirations, and motivation for applying to eBay. The recruiter will assess your basic qualifications, communication skills, and cultural fit. They will also discuss salary expectations and the overall interview process.
**Interviewers look for:** Clear communication.; Genuine interest in eBay and the role.; Basic understanding of the job requirements.; Professional demeanor.
**Evaluation criteria:** Basic understanding of the role and company.; Communication skills.; Enthusiasm and motivation.; Alignment of career aspirations with the opportunity.
**Common rejection reasons:** Poor communication skills.; Lack of enthusiasm or interest in the role/company.; Unrealistic salary expectations.; Mismatched career goals.
## Questions

- Tell me about yourself and your background.
- Why are you interested in this Software Engineer role at eBay?
- What are your salary expectations?
- What do you know about eBay?

## Preparation tips

- Research eBay's mission, values, and recent news.
- Be prepared to talk about your resume and why you're interested in this specific role.
- Practice articulating your career goals and what you're looking for in your next position.
- Have a clear understanding of your salary expectations.
- Prepare a few questions to ask the recruiter about the role or company culture.

## Round 2: Coding and Algorithms Interview
**Type:** Technical Interview (Coding) · **Difficulty:** Medium · **Duration:** 60 min
Assess coding skills, data structures, algorithms, and problem-solving abilities.
This round focuses on your technical skills. You will be asked to solve coding problems, typically involving data structures and algorithms. The interviewer will assess your ability to write functional code, your problem-solving approach, and your understanding of computational complexity. You'll likely code in a shared editor or on a whiteboard.
**Interviewers look for:** Strong coding skills.; Logical and systematic approach to problem-solving.; Knowledge of fundamental data structures and algorithms.; Ability to write clean and efficient code.; Clear communication of thought process.
**Evaluation criteria:** Proficiency in a programming language (e.g., Java, Python, C++).; Ability to translate problem statements into working code.; Understanding and application of data structures and algorithms.; Code quality (readability, efficiency, correctness).; Problem-solving approach and logical thinking.; Ability to analyze time and space complexity.
**Common rejection reasons:** Inability to solve coding problems efficiently.; Poor understanding of data structures and algorithms.; Code is not clean, readable, or maintainable.; Difficulty explaining thought process.; Incorrect time or space complexity analysis.
## Questions

- Given an array of integers, find the contiguous subarray with the largest sum.
- Implement a function to check if a binary tree is a valid Binary Search Tree (BST).
- Find the kth smallest element in an unsorted array.
- Design and implement a data structure that supports insertion, deletion, and getRandom in average O(1) time.

## Preparation tips

- Practice coding problems on platforms like LeetCode, HackerRank, or AlgoExpert.
- Focus on common data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming).
- Be prepared to explain your code and the reasoning behind your choices.
- Practice analyzing the time and space complexity of your solutions.
- Ensure your chosen programming language is comfortable and you know its standard library well.

## Round 3: Behavioral and Cultural Fit Interview
**Type:** Behavioral Interview · **Difficulty:** Medium · **Duration:** 45 min
Assess behavioral competencies, cultural fit, and past experiences.
This round typically involves behavioral questions designed to understand your past experiences, how you handle various work situations, and your overall fit with the team and eBay's culture. You'll be asked to provide specific examples using the STAR method. The interviewer may also delve into your technical interests and career goals.
**Interviewers look for:** Evidence of collaboration and teamwork.; Examples of problem-solving and initiative.; Resilience and ability to learn from mistakes.; Positive attitude and enthusiasm.; Alignment with eBay's core values.
**Evaluation criteria:** Behavioral competencies (teamwork, communication, problem-solving, adaptability).; Past experiences and how they relate to the role.; Cultural fit and alignment with eBay's values.; Motivation and passion for technology and the company.; Ability to handle challenging situations.
**Common rejection reasons:** Lack of clarity in explaining past experiences.; Inability to provide specific examples using the STAR method.; Negative attitude or blaming others.; Poor alignment with team dynamics or company values.; Lack of curiosity or engagement.
## Questions

- Describe a time you faced a significant technical challenge and how you overcame it.
- Tell me about a project where you had to collaborate with a team. What was your role?
- Describe a situation where you received constructive criticism. How did you respond?
- How do you stay updated with new technologies and industry trends?

## Preparation tips

- Prepare specific examples from your past experiences using the STAR method (Situation, Task, Action, Result).
- Think about common behavioral questions related to teamwork, leadership, conflict resolution, failure, and success.
- Reflect on your strengths and weaknesses.
- Understand eBay's company values and how your experiences align with them.
- Be ready to discuss your career aspirations and why you are a good fit for this role.