Scale Engineer

Software Engineer

Software EngineerIE-04Medium to Hard

This interview process is for a Software Engineer (IE-04) at Instabase. It is designed to assess a candidate's technical skills, problem-solving abilities, and cultural fit within the company.

Rounds·3

Timeline·~7d

Experience·2 - 5 yrs

Comp band·US$110000 - US$150000

Interview time·150 min

Evaluation

What they measure.

  • Problem-solving approach
  • Code quality and efficiency
  • Understanding of data structures and algorithms
  • Ability to communicate technical ideas

Preparation

How to prepare.

Tips

  1. Review core computer science concepts, including data structures, algorithms, and operating systems.
  2. Practice coding problems, focusing on common patterns and edge cases.
  3. Study system design principles and common architectural patterns.
  4. Prepare to discuss your past projects and experiences in detail.
  5. Research Instabase's products, mission, and values.
  6. Prepare thoughtful questions to ask the interviewers.

Study plan

Fig · Study plan — 04 phases

01 / 04
01

Phase 01 of 04

Data Structures and Algorithms

Weeks 1-2: Data Structures & Algorithms fundamentals. Practice implementations and complexity analysis.

Weeks 1-2: Focus on fundamental data structures (arrays, linked lists, trees, graphs, hash tables) and algorithms (sorting, searching, dynamic programming, graph traversal). Practice implementing these in your preferred language and analyze their time and space complexity.

Questions

Commonly asked.

  • Tell me about a time you had to debug a complex issue.
  • How would you design a system to handle real-time notifications for a social media platform?
  • Given an array of integers, find the contiguous subarray with the largest sum.
  • What are the trade-offs between SQL and NoSQL databases?
  • Describe a situation where you disagreed with a team member and how you resolved it.

Locations

Regional differences.

Fig · Regions — 02 locations

01 / 02

Location

San Francisco

Interview focus

System DesignDistributed SystemsScalability

Common questions

  • How would you design a URL shortener service?
  • Explain the CAP theorem and its implications for distributed systems.
  • Describe a challenging technical problem you solved and how you approached it.

Tips

  • Be prepared to discuss large-scale systems and their trade-offs.
  • Understand common distributed system patterns and challenges.
  • Practice explaining complex technical concepts clearly and concisely.

Rounds

Round-by-round.

Expand a step for evaluation criteria, sample questions, and prep notes.

Med

Technical Interview (Coding) · 45 min · Software Engineer

This round focuses on your core coding skills. You will be given a problem and asked to write code to solve it. The interviewer will assess your ability to understand the problem, devise an efficient solution, and implement it correctly. Expect questions on data structures and algorithms.

What they look for

Ability to translate a problem into codeUnderstanding of time and space complexityClean and maintainable codeLogical thinking

Evaluation

  • Correctness of the solution
  • Efficiency of the code (time and space complexity)
  • Clarity and readability of the code
  • Problem-solving approach

Sample questions

  • Given a binary tree, invert the tree.

    Data StructuresAlgorithmsRecursion

  • Find the first non-repeating character in a string.

    StringsHash MapsTime Complexity

Prep for this round

  1. 01Practice coding on a whiteboard or a shared editor.
  2. 02Think out loud and explain your approach before coding.
  3. 03Test your code with edge cases.
  4. 04Be prepared to discuss alternative solutions and their trade-offs.

Common rejection reasons

  • ×Inability to articulate thought process
  • ×Poorly written or inefficient code
  • ×Lack of understanding of fundamental algorithms

DSA

Coding questions at instabase.

Frequently reported on instabase loops

View all at instabase

Other guides

More at instabase.