QuickSell recently visited our campus to recruit for various positions, including Frontend, Backend, and Android engineers. I opted to interview for the Backend Engineer role. The entire process took place over two days and consisted of three rounds.

Round 1 (90 mins):

This initial round included 12 questions, divided into two sections:

• JavaScript: 6 questions, ranging from easy to medium difficulty in data structures and algorithms.
• SQL: 6 questions, spanning from medium to hard in complexity.

Only candidates who solved all the questions were allowed to advance to the next round.

Round 2 (60 mins):

This was a technical interview conducted by a current backend engineer at QuickSell. The session began with a brief introduction, followed by technical questions focused on APIs and database management. It also included a live coding segment, where I was asked to:

• Solve 3 JavaScript problems.
• Solve 3 SQL queries.

I shared my screen and worked on VSCode. The JavaScript questions required optimization, and although I encountered some difficulties with a couple of questions, the interviewer was very supportive, helping me understand the problems. By the end of the session, I had successfully solved all the questions.

Round 3 (60 mins):

This round was a mix of managerial and technical interviews conducted by the company’s Vice President. We started with a basic introduction and a discussion about my interest in working at a startup. The technical portion involved an advanced SQL coding challenge related to APIs, focusing on various types of APIs and utilizing Postman. The SQL query was particularly demanding, involving complex joins and pagination, necessitating an advanced level of knowledge.

Despite a few mistakes, the VP provided valuable hints and guidance. The interview concluded with a discussion about QuickSell’s culture, office environment, and products. The VP was very approachable, and overall, I had a positive experience.

In the end, I was the only candidate from my college to be selected by QuickSell for any role.