My Blueshift SWE 2 Frontend Interview Experience — [26LPA]

Overview

This case study outlines the interview process for a Frontend Engineer (SDE-2) role at Blueshift. The process consisted of three rounds: an online assessment (OA) on HackerRank, a technical interview, and an HR discussion. The candidate provides insights into the questions asked, the coding challenges presented, and the overall impression of the company.

Interview Rounds

Round 1: Online Assessment (OA)

The initial round involved two coding problems on HackerRank.

• Question 1: HackerRank League: Countries That Never Scored a Century

  • Description: The task required identifying the number of countries that had never achieved a score of 100 or more, given an array of country-score pairs.

  • Approach: The candidate employed a map to store the highest score for each country and then counted the number of countries with scores below 100.

  • Example:

    scores = [
      ["India", 2],
      ["Australia", 31],
      ["India", 122],
      ["Australia", 61],
      ["India", 4],
    ];
    

    • Output: 1

• Question 2: Parking Lot Problem

  • Description: The problem involved determining if a given number k of cars could be parked in a parking lot, represented by an array where 0 signifies an empty spot and 1 signifies an occupied spot. Cars cannot be parked in adjacent spots.
  • Approach: Initially overthinking the problem, the candidate realized that a single-pass count-based approach with boundary checks effectively solves the problem.
  • Example Inputs/Outputs:
    • spots = [1,0,0,0,1], k = 1 → true
    • spots = [1,0,0,0,1], k = 2 → false

Round 2: Technical Interview (60 minutes)

This round was conducted by a Team Lead from the Orchestration Team. The interview commenced with an introduction to Blueshift and the team's responsibilities.

The interview included theoretical and practical coding questions.

• Theoretical Questions:
  • Promises: definition, types, and practical use cases