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Senior Software Engineer
eBay
3 rounds | 2 Coding
problems
Rejected
Interview preparation journey
Journey
It was good overall, but I was a little worried about the hiring process, as it took almost 3–4 months to complete the drive. The first two rounds were online (design and development), and the third round was face-to-face. Overall, the hiring process was smooth, and the hiring team was supportive and cooperative.
Application story
I applied through LinkedIn. After a week, I received a call to confirm my availability. Once it was confirmed, I received a link for the coding round on the CodeSignal platform. After about a month, I had another system design round on the same platform. Finally, there was a face-to-face interview, where I was rejected.
Why selected/rejected for the role?
I was unable to optimize the code for a parking system handling millions of vehicles, and I also did not follow OOP principles properly. I was advised to focus on applying OOP principles, especially during system design rounds, while writing code.
Preparation
Duration: 4 months
Topics: Design Pattern, DSA, System Design, JavaScript, NodeJS
Tip 1: Focus on system design (Senior Software Engineer level).
Tip 2: Learn and apply design patterns.
Tip 3: Strengthen DSA fundamentals (trees, graphs, heaps, maps).
Application process
Where: Linkedin
Eligibility: 3 years+ experience, (Salary Package: 30 LPA)
Tip 1: Focus on distributed systems in your projects.
Tip 2: Clearly mention your responsibilities and the impact you had on the project.
Interview rounds
01
Round
Medium
Online Coding Interview
Duration90 minutes
Interview date7 Oct 2025
Coding problem0
The CodeSignal platform detected background noise, and because of this, it redirected me back to the home page three times.
It consisted of four questions, each having three to four functions, where we only needed to complete the functions. The questions were related to designing a database, covering operations such as update, delete, and find. There were also scenario-based queries, and the final question involved designing a backup database for the same system.
02
Round
Medium
Online Coding Interview
Duration90 minutes
Interview date7 Nov 2025
Coding problem1
No specific time was given; I was provided with a link and asked to complete it within a week at any time. Sometimes, the CodeSignal platform detected background noise and redirected me to the home page.
1. System Design
All questions were descriptive and scenario-based. Based on the given scenarios, we had to select the correct answers for the MCQ questions. Each question required reading the description carefully and identifying the most appropriate system design solution.
Problem approach
Tip 1: Focus on system design.
Tip 2: Basic DSA knowledge—such as heaps, maps, and trees—is essential for implementing the most suitable data structures based on requirements.
03
Round
Medium
Face to Face
Duration90 minutes
Interview date16 Nov 2025
Coding problem1
1. System Design
I was asked to design a parking lot system capable of handling millions of vehicles.
He expected the code to follow proper OOP principles and also evaluated how we would handle millions of vehicles simultaneously. He asked questions about memory allocation for each vehicle, cost calculation, and memory management when a vehicle is released from the parking lot. In addition, around five to six scenario-based questions were asked covering these aspects.
Problem approach
Tip 1: Follow OOP principles.
Tip 2: Focus on system design.
Tip 3: Strengthen DSA fundamentals (maps, heaps, trees, graphs).
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Skill covered: Programming
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